The statement regarding the census in this problem is classified as a True statement.
What are the concepts of population and sample?Population: Collection or set of individuals or objects or events whose properties will be studied.
Sample: The sample is a subset of the population, and a well chosen sample, that is, a representative sample will contain most of the information about the population parameter. A representative sample means that all groups of the population are inserted into the sample.
A Census is when a group of the population is chosen, that is, a sample is chosen, hence the statement for this problem is true.
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you deposit $1000 in an account that pays 3.5% annual interest compounded monthly. when is your balance at least $1200? round your answer to nearest hundredth.
The balance will be at least $1200 after 8.18 months, if you deposit $1000 in an account that pays 3.5% annual interest compounded monthly.
What is compound interest?The result of earning interest on a principal amount as well as the accumulated interest from earlier periods is known as compound interest. It occurs when money is reinvested rather being paid out, allowing interest to be generated on the principle and accrued interest over the next month.
The balance of an account with an initial deposit of $1000 earning 3.5% annual interest compounded monthly will reach $1200 after 8.18 months.
To find the time it takes for the balance to reach $1200, we can use the formula for compound interest, A = P[tex](1 + r/n)^{nt}[/tex],
where P is the principal amount, r is the annual interest rate, n is the number of times the interest is compounded per year, and t is the time in years.
In this case, P = 1000, r = 0.035, n = 12 (because the interest is compounded monthly), and t is the unknown variable. We can rearrange the formula to solve for t:
t = (A/P) / (1 + r/n)
Plugging in the values, we get
t = (1200/1000) / (12(1 + 0.035/12))
which simplifies to
t = 8.18 months
Therefore, it will take 8.18 months for the balance of the account to reach $1200.
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The accompanying data set consists of observations on shower-flow rate (L/min) for a sample of n = 129 houses:
4.6 12.1 7.1 7.0 4.0 9.2 6.7 6.9 11.5 5.1
11.2 10.5 14.3 8.0 8.8 6.4 5.1 5.6 9.6 7.5
7.5 6.2 5.8 2.8 3.4 10.4 9.8 6.6 3.7 6.4
8.3 6.5 7.6 9.3 9.2 7.3 5.0 6.3 13.9 6.2
5.4 4.8 7.5 6.0 6.9 10.8 7.5 6.6 5.0 3.3
7.6 3.9 11.9 2.2 15.0 7.2 6.1 15.3 18.3 7.2
5.4 5.5 4.3 9.0 12.7 11.3 7.4 5.0 3.5 8.2
8.4 7.3 10.3 11.9 6.0 5.6 9.5 9.3 10.4 9.7
5.1 6.7 10.2 6.2 8.4 7.0 4.8 5.6 10.5 14.6
10.8 15.5 7.5 6.4 3.4 5.5 6.6 5.9 15.0 9.6
7.8 7.0 6.9 4.1 3.6 11.9 3.7 5.7 6.8 11.3
9.3 9.6 10.4 9.3 6.9 9.8 9.1 10.6 4.5 6.2
8.3 3.1 4.9 5.0 6.0 8.2 6.3 3.8 6.0 (a) Construct a stem-and-leaf display of the data. (Enter numbers from smallest to largest separated by spaces. Enter NONE for stems with no values.)
Stems Leaves
2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 (b) What is a typical, or representative, flow rate?
L/min
(c) Does the display appear to be highly concentrated or spread out?
highly concentrated, except for a few values on the positive sidehighly concentrated in the middle highly concentrated, except for a few values on the negative sidespread out
(d) Does the distribution of values appear to be reasonably symmetric? If not, how would you describe the departure from symmetry?
Yes, the distribution appears to be reasonably symmetric.No, the data are skewed to the right, or positively skewed. No, the data are skewed to the left, or negatively skewed.No, the distribution of the values appears to be bimodal.
(e) Would you describe any observation as being far from the rest of the data (an outlier)?
Yes, the value 2.2 appears to be an outlier.Yes, the value 15.5 appears to be an outlier. Yes, the value 18.3 appears to be an outlier.No, none of the observations appear to be an outlier.
a ) Construction of stem and leaf display of the data is:
For n = 129 and with splint unit = 0.1, the stem and splint map of the given data on Shower- inflow rate( L/ min) is as follows
a stem-and-leaf display of the data.
Stems Leaves
2 28
3 1344567789
4 01356889
5 00001114455666789
6 0000122223344456667789999
7 00012233455555668
8 02233448
9 012233335666788
10 2344455688
11 2335999
12 17
13 9
14 36
15 0035
16 None
17 None
18 3
b) From brume and splint map we note that minimal Shower inflow rate is2.2 whereas outside is18.3 L/ mim. farther typical or representative rate is7.0 L/min.
c) The display of data on steam and leaf chart shows that data is positively skewed means concentration of data on left side or lower value side is high as compared to other side.
d) Distribution is not symmetric rather very clear positive skew ness is observed through steam and leaf chart. Even distribution is Unimodal.
e) From steam and leaf chart is indicative to conclude that the highest observation 18.3 is outlier.
A stem and splint plot, also known as a stem and splint illustration, is a way to arrange data so that it's simple to see how constantly colorful feathers of values do. It's a graph that displays ordered numerical data. A stem and a splint are divided into each piece of data.
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Complete question:
The accompanying data set consists of observations on shower-flow rate (L/min) for a sample of n = 129 houses:
4.6 12.1 7.1 7.0 4.0 9.2 6.7 6.9 11.5 5.1
11.2 10.5 14.3 8.0 8.8 6.4 5.1 5.6 9.6 7.5
7.5 6.2 5.8 2.8 3.4 10.4 9.8 6.6 3.7 6.4
8.3 6.5 7.6 9.3 9.2 7.3 5.0 6.3 13.9 6.2
5.4 4.8 7.5 6.0 6.9 10.8 7.5 6.6 5.0 3.3
7.6 3.9 11.9 2.2 15.0 7.2 6.1 15.3 18.3 7.2
5.4 5.5 4.3 9.0 12.7 11.3 7.4 5.0 3.5 8.2
8.4 7.3 10.3 11.9 6.0 5.6 9.5 9.3 10.4 9.7
5.1 6.7 10.2 6.2 8.4 7.0 4.8 5.6 10.5 14.6
10.8 15.5 7.5 6.4 3.4 5.5 6.6 5.9 15.0 9.6
7.8 7.0 6.9 4.1 3.6 11.9 3.7 5.7 6.8 11.3
9.3 9.6 10.4 9.3 6.9 9.8 9.1 10.6 4.5 6.2
8.3 3.1 4.9 5.0 6.0 8.2 6.3 3.8 6.0
(a) Construct a stem-and-leaf display of the data. (Enter numbers from smallest to largest separated by spaces. Enter NONE for stems with no values.)
Stems Leaves
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
(b) What is a typical, or representative, flow rate?
L/min
(c) Does the display appear to be highly concentrated or spread out?
highly concentrated, except for a few values on the positive sidehighly concentrated in the middle highly concentrated, except for a few values on the negative sidespread out
(d) Does the distribution of values appear to be reasonably symmetric? If not, how would you describe the departure from symmetry?
Yes, the distribution appears to be reasonably symmetric.No, the data are skewed to the right, or positively skewed. No, the data are skewed to the left, or negatively skewed.No, the distribution of the values appears to be bimodal.
(e) Would you describe any observation as being far from the rest of the data (an outlier)?
Yes, the value 2.2 appears to be an outlier.Yes, the value 15.5 appears to be an outlier. Yes, the value 18.3 appears to be an outlier.No, none of the observations appear to be an outlier.
Use the coordinates below to determine if AABC and ADEF are congruent.
AABC: A(2, -8), B(-5, -2), C(-7, 3); ADEF: D(-9, 7), E(-11, 12), F(-2, 1)
AB=
DE=
BC=
EF=
AC=
DF=
Are the angles congruent? If yes, explain your reasoning and write a congruency statement.
No The triangles' are not congruent
How to determine if the triangles are congruentThe length of the corresponding sides should be equal and the length of sides is gotten using the equation:
The length of line in an ordered pair is calculated using the formula
d = √{(x₂ - x₁)² + (y₂ - y₁)²}
where
d = distance between the points
x₂ and x₁ = points in x coordinates
y₂ and y₁ = points in y coordinates
distance between points A(2, -8), B(-5, -2), C(-7, 3); and ΔDEF: D(-9, 7), E(-11, 12), F(-2, 1) are calculated as follows:
AB =√{(-2 + 5)² + (-8 + 2)²} = 6.71
DE = √{(-9 + 1)² + (7 - 12)²} = 9.43
BC = √{(-5 + 7)² + (-2 - 3)²} = 5.39
EF = √{(-11 + 2)² + (12 - 1)²} = 14.21
AC = √{(2 + 7)² + (-8 - 3)²} = 14.21
DF = √{(-9 + 2)² + (7 - 1)²} = 9.22
Examining the figures showing the side lengths shows that the two triangles are not congruent
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A man walks due west for 4km. he then changes direction and walks on a bearing of 197° until he is southwest of his starting point.How far is he then from his starting point?
To find the distance between the man's starting point and his final position, we can use vector addition.
Let's call the man's starting point A and his final position B. We can represent the two legs of his journey as vectors A and B, respectively.
The first leg of his journey, due west, can be represented as a vector of magnitude 4 km in the -x direction.
The second leg of his journey, on a bearing of 197°, can be represented as a vector in the -x and -y direction. We can use trigonometry to find the components of this vector.
The x component of the vector can be found using the formula:
x = magnitude * cos(angle) = d * cos(197°)
The y component of the vector can be found using the formula:
y = magnitude * sin(angle) = d * sin(197°)
where d is the magnitude of the vector (the distance the man traveled in this leg of his journey).
To find the magnitude of the vector, we'll use the Pythagorean theorem:
d^2 = x^2 + y^2
We can substitute the x and y components we found above into this equation to find d:
d^2 = (d * cos(197°))^2 + (d * sin(197°))^2
d^2 = d^2 * (cos^2(197°) + sin^2(197°))
d^2 = d^2
d = sqrt(d^2) = sqrt(d^2)
So the magnitude of the vector is d.
Next, we can add the two vectors to find the total distance from the man's starting point to his final position:
distance = sqrt((4 - d * cos(197°))^2 + (d * sin(197°))^2)
This is the distance the man is from his starting point. To find the exact value, we would need to know the value of d. However, without that information, this is as far as we can take the calculation.
Triangle XYZ is rotated 90° clockwise about the origin to form triangle x'Y'Z'.
Which statement is true?
The true statement is (d) The area of triangle XYZ is equal to the area of triangle X'Y′Z
How to determine the true statementFrom the question, we have the following parameters that can be used in our computation:
Triangle XYZ is rotated 90° clockwise about the origin to form triangle X'Y'Z'.
The rotation is a rigid transformation
This means that it does not change the side length and angles of a shape when applies
Using the above as a guide, we have the following:
The image and the preiamage have the same area
Hence, the true statement is (d)
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Complete question
Triangle XYZ is rotated 90° clockwise about the origin to form triangle X'Y′Z'.
y. z. y. x. x.
Which statement is true?
The sum of the angle measures of triangle XYZ is 90° less than the sum of the angle measures of triangle X'Y′Z'.
The angle measures of triangle XYZ are less than the corresponding angle measures of triangle X'Y′Z'.
Triangle XYZ is not congruent to triangle X'Y′Z'.
The area of triangle XYZ is equal to the area of triangle X'Y′Z
What is [ 8- (2/3) ^2] / ( 5 1/3 - 4 2/3 + 1 1/6 x 2)
Please Help!
Answer: To solve this expression, we first need to simplify the terms in the denominator:
5 1/3 - 4 2/3 + 1 1/6 x 2
We can convert each fraction to a mixed number:
5 1/3 = 5 + 1/3
4 2/3 = 4 + 2/3
1 1/6 x 2 = 2 x 1/6 + 2 = 2 + 1/3
Now we can perform the subtraction:
(5 + 1/3) - (4 + 2/3) + (2 + 1/3)
= 5 + 1/3 - 4 - 2/3 + 2 + 1/3
= 5 + 1/3 - 4 + 2 + 1/3 + 1/3
= 7
So the denominator simplifies to 7.
Next, we simplify the numerator:
8 - (2/3)^2
We can first square the fraction:
(2/3)^2 = 4/9
Now we can perform the subtraction:
8 - 4/9
= 8 - 4/9
= 8 x 9/9 - 4/9
= 72/9 - 4/9
= 68/9
So the numerator simplifies to 68/9.
Finally, we divide the numerator by the denominator:
68/9 ÷ 7 = 9.71
So, the expression simplifies to 9.71.
Step-by-step explanation:
estimate the percent of 18% of 48
Answer:8.64
Step-by-step explanation:
Answer:
8,64
Step-by-step explanation:
[tex]\frac{18}{100}[/tex]*48=8,64
Write an equation for the line that contains the points (4,-2) and (-2,0)
The linear equation that passes through the two given points is:
y = (-1/3)*x - 2/3
How to write the equation of the line with the two points?A general linear equation can be written as:
y = a*x + b
Where a is the slope and b is the y-intercept.
If a line passes through the points (x₁, y₁) and (x₂, y₂) then the slope can be written as:
a = (y₂ - y₁)/(x₂ - x₁)
Here we know that the line passes through (4, -2) and (-2, 0), then the slope is:
a = (0 + 2)/(-2 - 4)= 2/-6 = -1/3
y = (-1/3)*x + b
To find the value of b, we can replace the values of any of the points in the equation, if we use (-2, 0) we will get:
0 = (-1/3)*-2 + b
0 = 2/3 + b
-2/3 = b
The linear equation is y = (-1/3)*x - 2/3
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The product of two rational numbers is______ (1.A rational, 2.An irrational)
number because multiplying two rational numbers is
equivalent to the ratio of_____ (1.Two irrational numbers, 2.a rational and an irrational number, 3.Two integers)
which is_____ (1.a rational, 2.an irrational)
number.
The product of two rational numbers is 1 . A . Rational number because multiplying two rational numbers is equivalent to the ratio of 3 . Two integers which is 1 . a rational number .
What is the product of two rational numbers ?The product of two rational numbers is always a rational number. This is because a rational number is defined as a number that can be expressed as the ratio of two integers.
When you multiply two rational numbers, you are simply multiplying two ratios, which is still a ratio and therefore a rational number.
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1/4 (x - 2/5) = -1 1/2
Step-by-step explanation:
-1 1/2 = -3/2
1/4 × (x - 2/5) = -3/2
let's multiply both sides by 4 to remove the first fraction on the left side :
x - 2/5 = -12/2
x = -12/2 + 2/5 = -6 + 2/5
-6 = -6 × 5/5 = -30/5
so,
x = -30/5 + 2/5 = -28/5 = -5 3/5 = -5.6
please pick any form you need for your result.
The circle graph describes the distribution of preferred music from a sample of 400 randomly selected middle school students.
a circle graph titled preferred music, with five sections labeled rock 13 percent, hip hop 25 percent, pop 35 percent, classical 13 percent, and jazz 14 percent
Which of the following conclusions can we draw from the circle graph?
Hip Hop is the preferred music for 25 students.
Together, Pop and Jazz are the preferred music for over half the students.
Classical is the preferred music for 52 students.
Together, Rock and Hip Hop are the preferred music for 172 students.
The correct conclusion from the given percentage of students of different categories is option(c): Classical is the preferred music for 52 students.
What is meant by percentage?
A figure or ratio stated as a fraction of 100 is called a percentage. It is frequently indicated by the percent sign, "%."
Given,
Total number of middle school students = 400
Percent of students who prefer rock = 13%
Percent of students who prefer hip hop = 25%
Percent of students who prefer pop = 35%
Percent of students who prefer classical = 13%
Percent of students who prefer jazz = 14%
Now we can find the number of students for each category.
Number of students who prefer rock = 13/100 * 400 = 52
Number of students who prefer hip hop = 0.25 * 400 = 100
Number of students who prefer pop = 0.35 * 400 = 140
Number of students who prefer classical = 0.13 * 400 = 52
Number of students who prefer jazz = 0.14 * 400 = 56
We can now look at different options.
a) This is false as hip-hop is preferred by 100 students.
b) Together Pop and jazz are preferred by 140+56 = 196, which is not more than half (200) of students. So this is false.
c) This is true as classical is preferred by 52 students.
d) Together rock and hip hop are preferred by 52+100 = 152, which is not equal to 172. So this is false.
Therefore the correct conclusion from the given percentage of students of different categories is option(c).
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Answer: c
Step-by-step explanation:
I did the test and it’s right
A worker earned a 3% increase in her annual salary for each of 5 years. They plan to continue working in
their position for an additional n years. If they continue to earn a 3% increase in their annual salary, which
statement describes the expression that can be used to calculate the total percent increase in their annual
salary from the first year to the last year?
A. The expression 1.035 can be used because (1.035)" = 1.035.
OB. The expression 1.035 ca
can be used because 1.035 x 1.03 = 1.035.
O C. The expression 1.035+ can be used because 1.035 x 1.03 = 1.035+
O D. The expression 1.035+ can be used because 1.035 +1.03n = 1.035+n.
Using an exponential function, it is found that the expression that can be used to calculate the total percent increase in their annual salary from the first year to the last year is given by:
P= 100%[([tex]1.03^{t}[/tex]) - 1]
What is an exponential function?An exponent refers to the number of times a number is multiplied by itself. For example, 2 to the 3rd (written like this: 23) means: 2 x 2 x 2 = 8. 23 is not the same as 2 x 3 = 6. Remember that a number raised to the power of 1 is itself.
here, we have,
An increasing exponential function is modeled by:
A(t)= A(0)[tex](1+r)^{t}[/tex]
In which:
A(0) is the initial value.
r is the decay rate, as a decimal.
As a percentage, the increase is modeled by:
P= 100%[[tex](1+r)^{t}[/tex] - 1]
In this problem, the growth rate is of r = 0.03, hence:
P= 100%[ [tex](1+0.03)^{t}[/tex]- 1]
P= 100%[[tex](1.03)^{t}[/tex]- 1]
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Find the value of sin D rounded to the nearest hundredth, if necessary.
The value of the trigonometric equation sin D = 0.923
What are trigonometric relations?Trigonometry is the study of the relationships between the angles and the lengths of the sides of triangles
The six trigonometric functions are sin , cos , tan , cosec , sec and cot
Let the angle be θ , such that
sin θ = opposite / hypotenuse
cos θ = adjacent / hypotenuse
tan θ = opposite / adjacent
tan θ = sin θ / cos θ
cosec θ = 1/sin θ
sec θ = 1/cos θ
cot θ = 1/tan θ
Given data ,
Let the triangle be represented as ΔBCD
Now , the measure of BC = 24
The measure of side CD = 10
So , the measure of hypotenuse BD = √ ( BC )² + ( CD )²
Substituting the values in the equation , we get
The measure of BD = √ ( 576 ) + 100
The measure of BD = √ ( 676 )
The measure of BD = 26
Now , from the trigonometric relations ,
sin θ = opposite / hypotenuse
Substituting the values in the equation , we get
sin D = 24 / 26
On simplifying the equation , we get
sin D = 0.923
Hence , the equation is sin D = 0.923
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What is the area of this parallelogram?
A:60cm
B:66
C:72
D:132
The area of the given parallelogram is 12 cm².
What is Parallelogram?A parallelogram is defined as a special type of quadrilateral that has both pairs of opposite sides parallel and equal.
The formula to calculate the area of a parallelogram can thus be given as,
Area of parallelogram = b × h square units
where b is the length of the base and h is the height
According to the given parallelogram ABCD, we have
Length of the base b = 5 + 9 = 14 cm
The height h = 8 cm
Area of parallelogram = b × h
Area of parallelogram = 14 × 8
Area of parallelogram = 112 cm²
Thus, the area of the given parallelogram is 12 cm².
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The question seems incomplete, the missing figure has been attached below.
23 inches of wire cost 92 cents at the same rate, how much (in cents) will 34 inches of wire cost?
Answer:
Step-by-step explanation:
Let's use the formula rate = cost/length to find the cost of one inch of wire. We know that 23 inches of wire cost 92 cents, so the rate of one inch of wire can be found by dividing 92 cents by 23 inches:
rate = cost/length = 92 cents/23 inches = 4 cents/inch
Now that we have found the rate of one inch of wire, we can use it to find the cost of 34 inches of wire. We simply multiply the rate by the length:
cost = rate * length = 4 cents/inch * 34 inches = 136 cents
So, 34 inches of wire will cost 136 cents.
Step-by-step explanation:
the trick is to find the "norm" rate, which is the rate for one unit.
from there we can get the rate for any number of units just by multiplying.
so,
23 in for 92 cents.
that means the rate is
23/92 = 23/(23×4) = 1/4
so, by dividing numerator and denominator by 23 (in this case it has an integer result also for the denominator) we get the price for 1 inch of wire : 4 cents.
so, 34 inches then have the length/price ratio (we multiply numerator and denominator by 34)
1/4 × 34/34 = 34/136
that means 34 inches cost 136 cents (= $1.36).
Help me please!!!
Unit 8: Right Triangles & Trigonometry
Homework 1: Pythagorean Theorem
and its Converse
The triangles given can be determined to be :
13. Right - angled14. Obtuse triangle 15. Obtuse triangle 16. Acute triangle How to determine the triangles ?You can use the Pythagorean Theorem and its Converse to determine the type of triangle.
The Pythagorean Theorem and its Converse are basically :
c ² = a² + b ² This is a right angled triangle
c ² > ( a² + b ² ) This is an obtuse triangle
c ² < ( a² + b ² )
The triangles are :
13 :
26 ² = 24 ² + 10 ²
676 = 676
Right - angled
14 :
20 ² = 13 ² + 6 ²
400 > 205
Obtuse triangle
15 :
17 ² = 16 ² + 3 ²
289 > 265
Obtuse triangle
16 :
32 ² = 29 ² + 24 ²
1, 024 < 1, 417
Acute triangle
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Jenny swam 8 kilometers against the current in the same amount of time it took her to swim 16 kilometers with the current. The rate of the current was 1 kilometer per hour.
How fast would Jenny swim if there were no current?
[tex]{ \qquad\qquad\huge\underline{{\sf Answer}}} [/tex]
Let the time taken by Jeeny in both the cases be " t " ~
Now, during upstream : current flow opposes the flow of swimmer (Jenny)
Let her actual speed without current be " v ", so her speed in current (upstream) will be :
[tex]\qquad \sf \dashrightarrow \: v - 1 \: \: kmph[/tex]
Now, according to formula :
[tex]\qquad \sf \dashrightarrow \: distance = speed \times time[/tex]
[tex]\qquad \sf \dashrightarrow \: 8 = (v - 1)t \: \: \: \: \: - (1)[/tex]
Next, durijg dowstream : current flow supporta the flow of swimmer (Jenny)
So, her speed while going downstream will be :
[tex]\qquad \sf \dashrightarrow \: v +1 \: \: kmph[/tex]
By same formula,
[tex]\qquad \sf \dashrightarrow \: 16 = (v + 1)t \: \: \: \: \: - (2)[/tex]
Now, solve the two equations ~
[ since time taken by her in both the cases is same, we use t in both equations ]
Divide equation (1) by equation (2) :
[tex]\qquad \sf \dashrightarrow \: \dfrac{8}{16} = \dfrac{v - 1}{v + 1} [/tex]
[ t gets canceled out ]
[tex]\qquad \sf \dashrightarrow \: \dfrac{1}{2} = \dfrac{v - 1}{v + 1} [/tex]
[ cross multiply ]
[tex]\qquad \sf \dashrightarrow \: v + 1 = 2(v - 1)[/tex]
[tex]\qquad \sf \dashrightarrow \: v + 1 = 2v - 2[/tex]
[tex]\qquad \sf \dashrightarrow \: 2v - v = 1 - ( - 2)[/tex]
[tex]\qquad \sf \dashrightarrow \: v = 1 + 2[/tex]
[tex]\qquad \sf \dashrightarrow \: v = 3 \: \: kmph[/tex]
That's the required answer ~ [ Jimmy would swim at the rate of 3 kmph if she there was no current ]
A box of Almond Oats contains 15 ounces of cereal made of oat flakes and sliced almonds. Oat flakes
cost 15 cents per ounce, and almonds cost 30 cents per ounce. Write and simplify expressions in
terms of a, the number of ounces of almonds in the box.
a. The number of ounces of oat flakes in the box. o =
b. The cost of the almonds (in cents).c
c. The cost of the oat flakes (in cents). c =
=
d. The total cost of a box of Almond Oats (in cents). c =
Answer:
a. The number of ounces of oat flakes in the box is 15 ounces - a ounces, or 15 - a ounces.
b. The cost of the almonds (in cents) is 30 cents * a ounces, or 30a cents.
c. The cost of the oat flakes (in cents) is 15 cents * (15 - a) ounces, or 15 * (15 - a) cents.
d. The total cost of a box of Almond Oats (in cents) is the cost of the almonds plus the cost of the oat flakes, or 30a + 15 * (15 - a) cents.
I jsut need some answers thank you mwa
What is the rate of change for the equation y= 4x +40?
Answer:
4 would be the rate of change
Step-by-step explanation:
y=mx+b mx = slope
The slope represents the rate of change. Then the rate of change will be 4.
What is the solution of the system
of equations?
y = __
2
3 x + 5
7x − 3y = 15
(0, 5)
B (2,19/3)
(4, 23/3)
(6, 9)
Answer:
2,19/3 this is answer this is correct
The table shows the total numbers of visitors to a website t days after it is online.
a. Determine wether the table represents an exponential growth function, an exponential decay function, or neither.
b. How many people will have visited the website after it is online 47 days? Round to the nearest whole number.
a) The table represents an exponential growth function.
b) The number of people that will have visited the website after 47 days online is given as follows: 17,716 people.
How to model the exponential function?An exponential function is modeled as follows:
y = a(b)^x.
In which:
a is the initial value.b is the rate of change.The parameters for this problem are given as follows:
a = 11000.b = 12100/11000 = 1.1. > 1 -> exponential growth.Considering that the reference day is the day 42, the function is defined as follows:
y = 11000(1.1)^(x - 42).
Hence, after day 47, the number of visitors is given as follows:
y = 11000 x (1.1)^5.
y = 17,716.
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3 1/5+n=9 which can be used to solve this equation
Graph the points (0.5,
–
1.5) and (3,5) on the coordinate plane.
The graph of the points on a coordinate plane is added as an attachment
How to graph the points on a coordinate planeFrom the question, we have the following parameters that can be used in our computation:
(0.5, -1.5) and (3,5) on the coordinate plane
The description of the points are:
The point (0.5, -1.5) is located half a unit to the right of the origin and 1.5 units below the origin.The point (3,5) is located 3 units to the right of the origin and 5 units above the origin.Using the above as a guide, we have the graph as an attachment
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Mr. Kazoo is planning to build a fence
gate 40 inches wide. He plans to use
boards 7 inches wide. How many
boards should he buy?
Mr. Kazoo needs to buy 6 boards to complete his fencing as he can not buy exactly 5.71 boards.
What is a numerical expression?A numerical expression is a mathematical statement written in the form of numbers and unknown variables.
We can form numerical expressions from statements.
Given, Mr. Kazoo is planning to build a fence.
The gate is 40 inches wide.
Therefore, He needs to buy (40/7) = 5.71 boards.
But, He can not buy a board 0.71 part of the whole part, So he needs to buy 6 boards to complete his fencing.
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What are the slopes and lengths?
Answer:
KL - slope 6/5 , length 7.8
LM - slope -5/6 , length 7.8
MN - slope 6/5 , length 7.8
NK - slope -5/6 , length 7.8
Step-by-step explanation:
square :3
Select the correct answer.
A right angle triangle where ABC angle is 90° and angle ACB is 45°.
Which trigonometric ratio will not have the same value as sin A?
A.
cos A
B.
sin C
C.
tan C
D.
cos C
Reset Next
Trigonometric Ratios: Mastery Test
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Trigonometric ratio in option (c) tan C will not have the same value as sin A.
What are Trigonometric Functions?Trigonometric functions are defined as the periodic functions which relate an angle in a right angled triangle to the ratios of the length of two sides.
Given a right angled triangle ABC given below.
ABC angle is 90° and angle ACB is 45°.
Then angle BAC = 180° - (90° + 45°) = 45°
Since two angles are equal, it is an isosceles triangles.
So opposite sides to the equal angles are equal.
AB = BC
AC is the hypotenuse.
Sin A = Opposite side / Hypotenuse = BC / AC
(a) Cos A = Adjacent side / Hypotenuse = AB / AC = BC / AC
(b) Sin C = AB / AC = BC / AC
(c) Tan C = Opposite side / Adjacent side = AB / BC = BC / BC = 1, not equal to Sin A
(d) Cos C = BC / AC
Hence the option (c) is not equal to sin A.
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1. The equation 24x² + 2x = 15 has 2 solutions. What is
the greater of the 2 solutions?
A. 3/
B.
M + NO
C.
D. 1/1
E.
Answer:
Step-by-step explanation:
To find the solutions of the equation 24x² + 2x - 15 = 0, you can use the quadratic formula.
The quadratic formula states that given a quadratic equation of the form ax² + bx + c = 0, where a, b, and c are real numbers and a ≠ 0, the solutions are given by:
x = (-b ± √(b² - 4ac)) / 2a
In this case, a = 24, b = 2, and c = -15, so:
x = (-2 ± √(2² - 4 * 24 * -15)) / 2 * 24
x = (-2 ± √(4 + 1440)) / 48
x = (-2 ± √(1444)) / 48
Taking the square root of both sides, we have:
x = (-2 ± 38.2) / 48
Therefore, the solutions are:
x = (-2 + 38.2) / 48 = 36.2 / 48 = 0.75
x = (-2 - 38.2) / 48 = -40.2 / 48 = -0.84
Since 0.75 > -0.84, the greater of the two solutions is 0.75.
Answer:
the answers are: 36/48
-40/48
A car travels 55 mph and passes a truck travelling 50 mph. How long will it take the car to be
more than 23 mi ahead?
Answer:you never asked for like in what minutes or hours?
Step-by-step explanation:
The car, traveling at a speed 5 mph faster than the truck, will take more than 4.6 hours to be more than 23 miles ahead.
Explanation:This question pertains to relative speed. When the car is traveling at 55 mph and the truck at 50 mph, the car is effectively moving away from the truck at (55 mph - 50 mph) = 5 mph. To calculate the time it will take for the car to be more than 23 miles ahead, we can use the formula: Time = Distance/Speed. So the time it would take is Time = 23 miles / 5 mph = 4.6 hours. Therefore, it will take the car more than 4.6 hours to be more than 23 miles ahead.
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The table represents an exponential function. What is the multiplicative rate of change of the function? 2 5.
From the table which represents the exponential function , the multiplicative rate of change of function is (a) 1/5 .
The exponential function is expressed mathematically as : y = a(b)ˣ ;
where "a" is = initial value of function , and "b" is = multiplicative rate of change ;
We first substitute , the first two values from the exponential table ;
we get ;
⇒ 2 = a(b)¹
⇒ 2 = ab ,...,,....equation(1) ;
Now substituting the second value ,
we get ;
⇒ 2/5 = a(b)² ,....equation(2) ;
On dividing equation(2) by equation(1) ,
we get;
⇒ 2/(2/5) = ab/ab² ;
⇒ 5 = 1/b ;
⇒ b = 1/5 .
Therefore , the multiplicative rate of change is b = 1/5 .
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The given question is incomplete , the complete question is
The table represents an exponential function.
What is the multiplicative rate of change of the function ?
(a) 1/5
(b) 2/5
(c) 2
(d) 5