Answer:
118
Step-by-step explanation:
5y² + 10y - 2 y = 4
5(4)² + 10(4) - 2
= 5(16) + 40 - 2
= 80 + 40 - 2
= 120 - 2
= 118
To find the value of the expression 5y^2 + 10y - 2 when y = 4, we can substitute y = 4 in the expression and simplify as follows:
5y^2 + 10y - 2, when y = 4
= 5(4)^2 + 10(4) - 2 [Substituting y = 4]
= 5(16) + 40 - 2
= 80 + 38
= 118
Therefore, the value of the expression 5y^2 + 10y - 2 when y = 4 is 118.
PLEASE HELP ME I REALLY NEED TO GET MY GRADE UP I INCLUDED THE GRAPH WITH THE QUESTION!!!
Graph f(x) = -2/3x -3
Use the line tool and select two points to graph the line.
Answer:
Step-by-step explanation:
In the picture are 2 dots connect the line
I plugged in 0 for x and got (0,-3)
then i plugged in -3/2 for x and got (-3/2, -2)
plotted those 2 points and drew a line connecting those 2 dots
Simplify (7j3 - 2) + (5j3 - j - 3)
The simplified expression of (7j³ - 2) + (5j³ - j - 3) is 12j³ - j - 5.
To simplify the expression (7j³ - 2) + (5j³ - j - 3), we first combine like terms. The like terms are the ones with the same power of j.
The terms with j³ are 7j³ and 5j³, which add up to 12j³.
The terms with j are -j and -j, which add up to -2j.
The constant terms are -2 and -3, which add up to -5.
(7j³ - 2) + (5j³ - j - 3) = 7j³ + 5j³ - 2 - j - 3 (grouping like terms)
= 12j³ - j - 5 (combining like terms and simplifying)
Therefore, the simplified expression is 12j³ - j - 5.
A simplified expression is an expression in which all like terms have been combined and any unnecessary parentheses or symbols have been removed
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Can some please help me on this?
which of the following statements appropriately describe theoretical hypotheses? check all that apply. a theoretical hypothesis is a hypothesis that can never be proved, but only confirmed. a theoretical hypothesis is a hypothesis that attempts to provide an explanation for a scientific question or phenomenon. a theoretical hypothesis is a hypothesis that can be proved with empirical evidence. a theoretical hypothesis is a hypothesis that can be proved by evidence from observation.
A theoretical hypothesis is a hypothesis that attempts to provide an explanation for a scientific question or phenomenon by proposing a theoretical framework or model. (option b).
Theoretical hypotheses are often used in scientific research to guide investigations and to help researchers make predictions about what they expect to observe. They are essential to the scientific method because they provide a basis for developing testable predictions and designing experiments to confirm or reject them.
A theoretical hypothesis is a hypothesis that attempts to provide an explanation for a scientific question or phenomenon.
This statement is accurate. As discussed earlier, a theoretical hypothesis is a type of hypothesis that proposes a theoretical framework or model to explain a scientific question or phenomenon.
Therefore, statement b is the most accurate description of a theoretical hypothesis.
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The probability of you getting accepted to your preferred college and receive a scholarship is 13/25, The probability that you get accepted to your preferred college is 18/25. What is the probability that you receive a scholarship, given that you are accepted to your preferred college?
Answer:
We can use the formula for conditional probability to solve this problem:
P(Scholarship | Accepted) = P(Scholarship and Accepted) / P(Accepted)
We know that P(Accepted) = 18/25 and P(Scholarship and Accepted) = 13/25 (from the given information). Therefore:
P(Scholarship | Accepted) = (13/25) / (18/25) = 13/18 or approximately 0.722
So the probability that you receive a scholarship, given that you are accepted to your preferred college, is about 0.722 or 72.2%.
Step-by-step explanation:
if tan (x+y)=4/3 and tan x=5/13. evaluate tan y
Clara needs to separate her pizza dough
into equal pieces by mass and roll out the
dough to be a certain thickness. Which
metric tools and units should Clara use to
check?
Answer:
Step-by-step explanation:
tg
By what number should(-3) ki power upon2 be divided to give the quotient as (4) ki power3 upon27
To obtain the quotient (4/27)⁻², (-3/2)⁻³ should be divided by -128/6561, and the result is -1/27.
To solve the problem, we need to simplify (-3/2)⁻³ and (4/27)⁻², and then find the quotient between them.
First, let's simplify (-3/2)⁻³
(-3/2)⁻³ = (2/-3)³ = -8/27
Next, let's simplify (4/27)⁻²
(4/27)⁻² = (27/4)² = 729/16
Now, we need to divide -8/27 by 729/16
(-8/27) ÷ (729/16) = (-8/27) × (16/729)
Multiply the numbers
= -128/6561
Therefore, we should divide (-3/2)⁻³ by -128/6561 to get the quotient (4/27)⁻².
(-3/2)⁻³ ÷ (-128/6561) = -1/27
So, (-3/2)⁻³ should be divided by -128/6561 to get the quotient (4/27)⁻², which is equal to -1/27.
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The given question is incomplete, the complete question is:
By what number should (-3/2)⁻³ be divided so that the quotient may be (4/27)⁻²
PLEASE HELPT
Out of 100 seventh and eight grade CAVA student , there wre 35 student that chose Music as their elective course and the rest chose world language . There were a Titian of 55 eight grade student and 50 of them chose world language
In Seventh grade, 30 students chose Music and 15 students chose World language while in Eight grade, 5 students chose Music and 50 students chose World language.
Simplified solution on linear algebraTotal students is 100
Total students that chose music is 35
Total students that chose world language is 100-35 = 65
Total students in eight grade is 55
Total students in seventh grade is 100-55 = 45
Students in eight grade that chose world language is 50
Students in eight grade that chose music is 55 - 50 = 5
Students in seventh grade who chose music is 35 - 5 = 30 (total students who chose music - number of eighth grade students who chose music)
Students in seventh grade who chose world language = 45 - 30 = 15 (total student in seventh grade - students in seventh grade who chose music)
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The spinner face shown is divided into 8 equal sections. 1, 2, 1, 2, 4, 2, 5, 3. The arrow on this spinner is spun once. What is the probability that the arrow will land on a section labeled with a number greater than 3?
Answer: 1/4
Step-by-step explanation:
There are 8 possible outcomes
there are 2 possible times that the number is greater than 3
so you have a 2 out of 8 chance of getting a number greater than 3
2/8=1/4
Charlotte is redecorating the master bedroom in her house. She has purchased a new bedroom set and also plans to
paint the room and put in new flooring. The room is rectangular, with dimensions of (160 feet (length) by \(13\frac(1)
(210) feet (width). The walls in the room are 9 feet tall, and the room contains two doors and two windows.
Charlotte has decided to put new carpet in the bedroom. The carpet she chose costs $1.85 per square foot, not
Including the cost of labor or other related materials. She was given the following information by the local flooring store
where she is purchasing the carpet.
She is required to purchase a plece of carpet which includes a 3-inch overlap on all sides. Labor and material costs
will relate to the area of this plece.
The labor costs are $23 per hour, per person.
A two-person carpet crew can lay 50 square feet of carpet each hour.
The crew that will complete the job at Charlotte's house will be a four-person crew.
There is an additional $75 fee to cover the cost of equipment, materials, and supplies.
What are the dimensions of the plece of carpet that Charlotte must purchase? Note: Express your answer as a decimal
number and do not round.
Answer:
The dimensions of the piece of carpet that Charlotte must purchase is 160.5 feet by 13.5 feet, and the total cost of the carpet, including labor and materials, is $5088.95
Step-by-step explanation:
To determine the dimensions of the piece of carpet that Charlotte must purchase, we need to add the overlap to the length and width of the room.
The overlap is 3 inches, which is 0.25 feet (since there are 12 inches in a foot and 3/12 = 0.25).
So the length of the piece of carpet needed is 160.5 feet (160 + 0.25 + 0.25), and the width is 13.5 feet (13.25 + 0.25 + 0.25).
To find the area of the piece of carpet needed, we multiply the length by the width:
160.5 feet x 13.5 feet = 2166.75 square feet
Now we need to add the extra area needed for the overlap, which is:
0.25 feet x 0.25 feet x 4 (since there are 4 sides) = 0.25 square feet
So the total area of the piece of carpet needed is:
2166.75 square feet + 0.25 square feet = 2167 square feet
To determine the labor and material costs, we need to find the area of the plece (piece) of carpet, including the overlap.
The labor costs are $23 per hour, per person, and the crew can lay 50 square feet of carpet each hour. So the total labor cost will be:
4 people x $23 per hour per person = $92 per hour
To determine how many hours it will take to lay the carpet, we divide the total area of the plece by the rate at which the crew can lay carpet:
2167 square feet ÷ (4 people x 50 square feet per hour) = 10.835 hours
We will need to round up to the nearest whole number since the crew cannot work for a fraction of an hour. So it will take 11 hours to lay the carpet.
The cost of materials will be:
2167 square feet x $1.85 per square foot = $4001.95
The cost of labor and materials will be:
11 hours x $92 per hour = $1012
$1012 + $4001.95 + $75 equipment/materials/supplies fee = $5088.95
Therefore, the dimensions of the plece of carpet that Charlotte must purchase is 160.5 feet by 13.5 feet, and the total cost of the carpet, including labor and materials, is $5088.95.
Fill in the blank with the correct response.
What is the scale factor?
3
S
R
ARST - AMNO
5.5 T
6
N
M
X
O
The scale factor of the dilation of the triangles is 2
What is the scale factor of the dilation?From the question, we have the following parameters that can be used in our computation:
The similar triangles
The scale factor of the dilation is the division of the corresponding sides
So, we have
Scale factor = 6/3
When evaluated, we have
scale factor = 2
Hence the scale factor is 2
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A carpenter is framing windows in a house he used feet of wood on the project if the windows are all same size how many feet of wood on the
The total amount of wood needed would be -
X = 2w(l + b).
Assume that the total number of windows made by the carpenter are {w}.
Let the dimensions of each of the window be {l} x {b} respectively.
The total amount of wood needed for one window would be -
x = 2(l + b)
For all the windows, the total amount of wood needed would be -
X = 2w(l + b).
Therefore, the total amount of wood needed would be -
X = 2w(l + b).
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Find 2/3 and 1/6 in it simplest form, the fraction which is exactly half way between
The fraction which exactly half-way between the fractions "2/3" and "1/6", expressed in simplest-form is "5/12".
To find the fraction exactly halfway between 2/3 and 1/6, we first convert the given fractions to fractions with a common denominator.
So, 2/3 = 8/12 and 1/6 = 2/12,
Now we have the fractions "8/12" and "2/12".
To find the fraction exactly halfway between them, we take their average.
So, Average of "8/12" and "2/12" is
⇒ (8/12 + 2/12)/2,
⇒ 5/12.
Therefore, "5/12" is the fraction exactly halfway between 2/3 and 1/6.
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The given question is incomplete, the complete question is
Find the fraction which is exactly half way between 2/3 and 1/6 in it simplest form.
Step 2: Switch the variables in the equation from Step 1. Then solve for y. Show your work. (2 points)
Step 3: Find the inverse of g(x)=x-2/5. What does this tell you about the relationship between f(x) = 5x + 2 and g(x)? Show your work. (3 points)
The inverse of the function is g(x) = ( x - 2 )/5 and f(x) = 5x + 2 and g(x) = x - 2/5 are inverse functions of each other
Given data ,
Step 1:
Let the function be represented as f ( x )
Now , f(x) = 5x + 2 as an equation with the variable x:
f(x) = 5x + 2
Step 2:
Switch the variables in the equation from Step 1 and solve for y
Switching x and y:
x = 5y + 2
x - 2 = 5y
Dividing both sides by 5
y = (x - 2)/5
So, the equation with y as the variable is y = (x - 2)/5
Step 3:
Now , the inverse of g(x) = x - 2/5 and f(x) = 5x + 2
The inverse of a function g(x) is denoted as g⁻¹(x) and it is obtained by interchanging x and y and solving for y
Given g(x) = x - 2/5, we can switch x and y:
x - 2/5 = g^(-1)(x)
Now, we can solve for y by isolating it on one side of the equation
x - 2/5 = y
Hence , the inverse of g(x) is y = ( x - 2 )/5
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3 ft
2.6 ft
4.5 ft
3.5 ft
3.5 ft
2.4 ft
2.4 ft
0.6 ft
Based on the figure, how many square feet of fabric make up the red and blue portions of the
flag?
The square feet of fabric of the portions in the red and blue portions is 10.05 square feet
Evaluating the square feet of fabric of the portionsThe missing figure is added as an attachment
We start by calculating the areas of the portions
The red and blue portions form a trapezoid
So, the area is
Red and blue portions = 2 * 1/2 * (2.2 + 4.5) * 1.5 = 10.05
Hence, the red and blue portions is 10.05 square feet
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at the local supermarket, 2 apples and one orange cost $1.50, while 3 apples and one orange cost $1.95. how much does an orange cost?
Answer:
The orange is 60 cents.
Step-by-step explanation:
1) Calculate the cost of an apple (45 cents).
2) Take away the cost of the 2 apples from the original problem (45+45=90 cents).
3) You get the cost of 60 cents for one apple.
3A + O - (2A + O) = 1.95 - 1.5
A = 0.45
Now we can substitute this value of A into one of the original equations to solve for O:
2(0.45) + O = 1.5
O = 0.6
Thus, an orange costs $0.60 at the local supermarket.
To find the cost of an orange, we can use the system of linear equations. Let's denote the cost of an apple as "a" and the cost of an orange as "o".
From the given information, we can write two equations:
1) 2a + o = $1.50
2) 3a + o = $1.95
Now, we can solve for "o" using the following steps:
Step 1: Subtract equation 1 from equation 2 to eliminate the "o" variable:
(3a + o) - (2a + o) = $1.95 - $1.50
a = $0.45
Step 2: Substitute the value of "a" back into equation 1 to find the value of "o":
2($0.45) + o = $1.50
$0.90 + o = $1.50
Step 3: Solve for "o":
o = $1.50 - $0.90
o = $0.60
So, the cost of an orange at the local supermarket is $0.60.
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Need help getting the answers, the ones I answered i am not sure if they are right or not
Answer:
See attached
Step-by-step explanation:
Given trapezoids with midlines, you want to find various values in the figures shown.
MidlineThe length of a midline of a figure is the average of the parallel edges. That means ...
twice the midline is the sum of the outer edgeseither outer edge is the difference of twice the midline and the other edgeThese relations are used in solving the figures shown. Work and results are given in the attachment.
suppose babies born in a large hospital have a mean weight of 4090 grams, and a variance of 313,600 . if 64 babies are sampled at random from the hospital, what is the probability that the mean weight of the sample babies would differ from the population mean by greater than 43 grams? round your answer to four decimal places.
For a sample of born babies' weight in a large hospital, probability that the mean weight of the sample babies would differ from the population mean by greater than 43 grams is equals to 0.5390.
We have a sample of born babies' weight in a large hospital.
Mean of weight = 4090 grams
Variance of weight = 31300
Standard deviations = 560
Sample size or included babies = 64
standard error = [tex]\frac{560}{\sqrt(64)}[/tex] = 70
We have to determine probability that the mean weight of the sample babies would differ from the population mean by greater than 43 grams. Let the population mean would be [tex]\mu[/tex]. Now, the probability, [tex]P ( \bar X - \mu > 43 ) [/tex]. Using Z-score formula, [tex]Z = \frac{X -\mu}{\frac{\sigma}{\sqrt(n)}} [/tex]
Substitute all known values then, z= ± 43/70, z= ± 0.614
P(z<-0.614 or z>0.614) = P(z<-0.614)+ P(z>0.614)
=2 × 0.2695
=0.5390
Hence, required value is 0.5390.
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danielle bought 3 pounds of ham she wants to make 12 sandwiches how much ham should she put if she wants each sandwich to have the same amount
a 1 1/3 pounds
b 3/4 pounds
c 1/3 pounds
d 3/12 pounds
pls help me on this
Answer: 1/4. Based on the given conditions, formulate:: 3/12 Cross out the common factor: 1/4.
Step-by-step explanation:
Answer: 3/12
Step-by-step explanation:
A box of fruit candy contains 50 candy pieces in five different colors: red, orange, yellow, green, and purple. willy opened the box and found that 22% , percent of the candy pieces are purple. if the box willy opened is representative of that particular brand of fruit candy, what best estimates the total number of non-purple candy pieces in 36 boxes of the same candy?
Answer: 1,404 Non-Purple Candies
Step-by-step explanation:
First, you must figure out how many are non-purple in the box of 50:
50*0.22=11
Then, you must figure out how many are NOT purple:
50-11=39
Next, since you are trying to calculate how many non-purples are in 36 boxes of that candy, you must multiply the number of non-purple found in 1 box by 36:
39*36= 1404
So, there are 1,404 Purple Candies in 36 Boxes of Candy (approximately)
The best estimate for the total number of non-purple candy pieces in 36 boxes of the same candy is 1,404.
If 22% of the candy pieces in one box of fruit candy are purple, then 78% (100% - 22%) of the candy pieces are non-purple. To find the best estimate of the total number of non-purple candy pieces in 36 boxes of the same candy, we need to use proportions.
Let x be the total number of candy pieces in one box of fruit candy. Then, the number of non-purple candy pieces in one box is 0.78x. Therefore, the total number of non-purple candy pieces in 36 boxes is:
36 boxes x 0.78x non-purple candy pieces per box = 28.08x non-purple candy pieces
To find the value of x, we can use the fact that the box contains 50 candy pieces in total. Therefore:
22% of x = 0.22x purple candy pieces
78% of x = 0.78x non-purple candy pieces
Total number of candy pieces = 50
Using these equations, we can solve for x:
0.22x + 0.78x = 50
1x = 50 / 0.78
x = 64.1 (rounded to one decimal place)
Therefore, each box contains approximately 64 candy pieces. And the total number of non-purple candy pieces in 36 boxes is:
28.08x non-purple candy pieces = 28.08 x 64.1 = 1802.728 non-purple candy pieces
So the best estimate for the total number of non-purple candy pieces in 36 boxes of the same candy is 1803 (rounded to the nearest whole number).
Let's use the terms you've provided to solve the problem step-by-step.
Step 1: Determine the number of purple candies in one box.
22% of the 50 fruit candy pieces are purple. To find this, multiply 50 by 0.22 (the decimal equivalent of 22%):
50 * 0.22 = 11 purple candy pieces
Step 2: Determine the number of non-purple candies in one box.
There are 50 fruit candy pieces in total. Subtract the 11 purple candies to find the number of non-purple candies:
50 - 11 = 39 non-purple candy pieces
Step 3: Estimate the total number of non-purple candies in 36 boxes.
To find this, multiply the number of non-purple candies in one box (39) by the number of boxes (36):
39 * 36 = 1,404
So, the best estimate for the total number of non-purple candy pieces in 36 boxes of the same candy is 1,404.
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Solve the following system of equations. What is one x-value of a solution? f(x)=2x^(2)-3x-10 g(x)=x+20
a. x = -5
b. x = -3
c. x = 0
d. x = 3
Answer: x = -3
Explanation did the test
options:
-x=2
-y=6
-y=8.1
-w=3.8
-kh=7.6
-kn=6.3
-kr=10.6
The statements that are true based on the variables around the centroid are; 1)The value of x is 2, 2)The value of y is 6 and 3) The length of KH is 7.6
How do we find the values of x and y and the lengths of the lines around the centroid?To find the value of y with the information provided about the various lengths around centroid,
KW : KR - 1:2
(2y - 8.9)/ (0.5y + 3.2) = 1/2
4y - 17.8 = 0.5y + 3.2
3.5y = 21
y =21/3.5
y = 6
KR = 0.5 × 6 + 3.2 = 6.2.
KT : KW = 1/2
7.1 x - 11. 8/ 5x - 5.2 = 1/2
14.2x - 23.6 = 5x -5.2
9.2x = 18.4
x = 2
KW = 5 × 2 - 5.2 = 4.8
KD : KH = 1/2
9w - 23.2/ 4.5w - 5.9 = 1/2
18w - 46.4 = 4.5w -5.9
13.5w = 40.5
w = 3
KH 4.5 x 3 - 5.9 = 7.6
The length of KN
KN = (5x - 5.2)
KN = (5 × 2 - 5.2)
KN = 4.8
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1,6kg of bananas costR36,80 what is the cost of 1kg of bananas ?
Answer:
R23
Step-by-step explanation:
1.6kg of bananas= R36.80
1kg= 36.80×1/1.6
= R23
What is the value of of 3 1/4 - 1 7/8
Answer:
The solution is 11/8
Step-by-step explanation:
3 1/4 - 1 7/8
= 13/4 - 15/8
= 26-15/8
= 11/8
Find the area of the regular polygon with the given radius or apothem.
(Simplify your answer. Type an exact answer using radicals as needed.)
The area of the regular polygon with 4 sides and an apothem of 12 cm is 576 square cm.
The given apothem of the polygon is 12 cm.
The area of a regular polygon with 4 sides (a square):
Area = 2 × apothem × perimeter / 4
Since a square has four equal sides, the perimeter of the square is given by:
Perimeter = 4 × side length
So, the side length by using the formula for the apothem of a regular polygon with 4 sides:
Apothem = side length / 2
Solving for side length, we get:
side length = apothem × 2 = 12 × 2 = 24 cm
Now we can find the perimeter:
Perimeter = 4 × side length = 4 × 24 = 96 cm
Substituting the values of apothem and perimeter in the area formula, we get:
Area = 2 × 12 × 96 / 4 = 2 × 12 × 24 = 576 square cm
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Which inequality is represented by this graph?
A: y/2 >4-x
B:y>4-x/2
C:y<4-x/2
D:y/2<4-x
An inequality that is represented by this graph include the following: C. y ≤ (4 - x)/2.
How to determine an equation of this line?In Mathematics and Geometry, the point-slope form of a straight line can be calculated by using the following mathematical expression:
y - y₁ = m(x - x₁)
Where:
x and y represent the data points.m represent the slope.First of all, we would determine the slope of this line;
Slope (m) = (y₂ - y₁)/(x₂ - x₁)
Slope (m) = (1 - 3)/(2 + 2)
Slope (m) = -2/4
Slope (m) = -1/2.
At data point (2, 1) and a slope of -1/2, a linear equation for this line can be calculated by using the point-slope form as follows:
y - y₁ = m(x - x₁)
y - 1 = -1/2(x - 2)
y = -x/2 + 1 + 1
y = -x/2 + 2
y ≤ (4 - x)/2 (since the solid line is shaded below)
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In circle
�
L,
�
�
=
9
LM=9 and the area of shaded sector =
27
�
27π. Find the length of
�
�
⌢
MN
⌢
. Express your answer as a fraction times
�
π.
The requried length of the arc MN is evaluated as 6π.
From the figure,
The area of the shaded sector is given as:
A = ∠NLM/360×πr²
27π= ∠NLM/360×π9²
∠NLM = 120
Now,
length MN = 120/360*2πr
= 1/3×2π×9
= 6π
Thus, the requried length of the arc MN is evaluated as 6π.
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brainliest, multiple choice, and 100 points! i really appreciate the help, and please let me know if you need help on anything, thanks!!
Answer:
Triangle congruence cannot be determined with the given information.
The following table represents the highest educational attainment of all adult residents in a certain town. If a resident who has a master's degree is chosen at random, what is the probability that they are aged 40 or over? Round your answer to the nearest thousandth.
Note: pls help me asap!! This is due by 11:59pm tonight
The probability that a person aged 40 or over has a master's degree is 6.15%
Given is table showing the educational qualification of a residential area, we need to find the probability that person aged 40 or over has a master's degree,
P(E) = favorable outcome / total outcome
P(person aged 40 or over has a master's degree) = 475+699 / 19076
= 1174 / 19076
= 0.06154
= 6.15%
Hence, the probability that a person aged 40 or over has a master's degree is 6.15%
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