Answer: -6
Step-by-step explanation:
Given: y = 100 - 2x
New: y = 100 - 2(x + 3)
= 100 - 2x - 6
= 94 - 2x
The original equation had a y-intercept of 100. The new equation has a y-intercept of 94. The y-value changes by -6 units.
Suppose the area of a rectangle is 9x3 + 27x2 + 36x + 18 and the length is 3x + 3. What is the width of the rectangle?• Width:
We know that the area of a rectangle is the width multiplied by its length, basically
[tex]A=b\cdot h[/tex]But here, we have the area, which is a polynomial, same for the length, then, to find out the width we must do a division of polynomial, I'll call the unknown polynomial as P, we have
[tex]\begin{gathered} A=P\cdot l \\ \\ P=\frac{A}{l} \\ \\ P=\frac{9x^3+27x^2+36x+18}{3x+3} \end{gathered}[/tex]So now we got to solve
[tex]P=\frac{9x^3+27x^2+36x+18}{3x+3}[/tex]There is a lot of ways to solve it, first, I'll factor 3 in the denominator
[tex]P=\frac{9x^3+27x^2+36x+18}{3(x+1)}[/tex]As well the numerator
[tex]P=\frac{3(3x^3+9x^2+12x+6)}{3(x+1)}[/tex]Then we can already simplify 3, and get an easier expression
[tex]P=\frac{3x^3+9x^2+12x+6}{x+1}[/tex]Now I'll factor using the grouping method, I want the numerator to be something like (x+1)*(another polynomial), doing that we can "cut" the (x+1).
One way to do it is to expand it in some simple sums, look at 3x³, we want a 3x² to match with him, but look that 9x² is 3x²+6x², let's write that way
[tex]P=\frac{3x^3+3x^2+6x^2+12x+6}{x+1}[/tex]It doesn't seem to help us at all, but look that now we can factor 3x², then
[tex]P=\frac{3x^2(x+1)+6x^2+12x+6}{x+1}[/tex]Look, we have our first (x+1) in the numerator. Let's use the same idea but now for the term 6x², we want a 6x to match with him, we have 12x, so let's write it as 6x + 6x.
[tex]P=\frac{3x^2(x+1)+6x^2+6x+6x+6}{x+1}[/tex]Similar to what we did before, factor 6x, and again
[tex]P=\frac{3x^2(x+1)+6x(x+1)+6x+6}{x+1}[/tex]Now we have one more (x+1).
Now the easiest one, factor 6
[tex]P=\frac{3x^2(x+1)+6x(x+1)+6(x+1)}{x+1}[/tex]As we can see we have (x+1) multiplied by something in all terms in the numerator, then we can factor (x+1) now
[tex]P=\frac{(x+1)(3x^2+6x+6)}{x+1}[/tex]Now we can cancel (x+1), and our final expression will be
[tex]P=3x^2+6x+6[/tex]Therefore, the width is
[tex]3x^2+6x+6=\text{ width}[/tex]Question 11 (1 point)
Find the slope between the two given points.
Answer:
Step-by-step explanation:
i would say a
for a particular peculiar pair of dice, the probabilities of rolling 11, 22, 33, 44, 55, and 66, on each die are in the ratio 1:2:3:4:5:61:2:3:4:5:6. what is the probability of rolling a total of 77 on the two dice?
The probability of rolling a total of 7 on the two dice is 8/63
Probability:
In Mathematics, Probability is a branch that deals with the occurrence of possible outcomes in a random event or experiment. It is also defined as the ratio of the number of favorable outcomes and the total number of outcomes.
The probability of an event is denoted by P(E). And the probability of all the events in the sample space will equal to 1.
Probability P(E) = No of favorable outcomes /Total No of outcomes
Here we have,
The probabilities of rolling 1, 2, 3, 4, 5, and 6, on each die, are in the ratio 1: 2: 3: 4: 5: 6
Let x, 2x, 3x, 4x, 5x, and 6x are the probabilities of rolling 1, 2, 3, 4, 5, and 6, on each die [ since they are in ratio 1: 2: 3: 4: 5: 6 ]
As we know the total events in a probability = 1
=> x + 2x + 3x + 4x + 5x + 6x = 1
=> 21 x = 1
=> x = 1/21
From the above calculations,
The probabilities of rolling 1, 2, 3, 4, 5, and 6 are [tex]\frac{1}{21} , \frac{2}{21}, \frac{3}{21}, \frac{4}{21}, \frac{5}{21}, \frac{6}{21}[/tex] respectively.
The possible combinations of two dies that can give a total of 7 are
(1, 6) (2, 5) (3, 4) (4, 3) (5, 2) (6, 1)
Therefore, the probability of rolling a total of 7 on the two dice
= the sum of the probabilities of rolling each combination
= [tex]\frac{1}{21} . \frac{6}{21} + \frac{2}{21} .\frac{5}{21} + \frac{3}{21} . \frac{4}{21} + \frac{4}{21} . \frac{3}{21} + \frac{5}{21} .\frac{2}{21} + \frac{6}{21} .\frac{1}{21}[/tex]
= [tex]\frac{6}{441} + \frac{10}{441} + \frac{12}{441} + \frac{12}{441} + \frac{10}{441} + \frac{6}{441}[/tex]
= [tex]\frac{56}{441}[/tex]
= [tex]\frac{8}{63}[/tex]
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The complete question is
For a particular peculiar pair of dice, the probabilities of rolling 1, 2, 3, 4, 5, and 6, on each die are in the ratio 1:2:3:4:5:6. What is the probability of rolling a total of 7 on the two dice
Part Brom least toBlair purchases the T-shirts from Company B. She needs to add a 759markup to her total cost to make a profit when she sells the shirts at thcarnival. How should Blair determine the selling price of each T-shirt atthe carnival?st CostDrag a number into each box to make the statements true.В B.She canThe total cost Blair paid for one T-shirt is $calculate the markup by multiplying her total cost by:Blair will sell each T-shirt at the carnival for $Finish LaterIISubmit
First step
We want to find the cost of each shirt Blair paid. In order to find it we want to find the total price Blair paid for the whole order and then divide it by 150 (total number of shirts).
She chose Company B.
They charge $3.10 per shirt, plus 4% of the total order for shipping.
There are 150 shirts, then the total order for shipping is:
150 · $3.10 = $465
we want to add the 4%. The 4% of $465 is
$465 · 4/100 = $465 · 0.04
= $18.60
If we add it to the total order for shipping:
$465 + $18.60 = $483.60
Second step
Now we divide the total price of 150 into 150: this is the cost for one shirt.
$483.60/150 = $3.224
If we round it to the nearest hundredth:
$3.224 ≅ $3.22
Answer- The total cost Blair paid for one T-shirt is $3.22
Mark upWe know that she needs to add 75% to the total cost.
Let's remember that every percentage is equivalent to it divided by 100: for example 100% is equivalent to 1. For 75%:
75% = 75/100 = 0.75
Then 75% is equivalent to 0.75.
This means that if we want to find the 75% of something we multiply it by its equivalent: 0.75.
Answer- She can calculate the markup by multiplying her total cost by 0.75
Sell price
Based on the previous parts, we know that we want to add the 75% (0.75) of the cost of each T-shirt Blair paid ($3.22).
We first find the 75% of $3.22 and then add it to it: it will be the cost of sell.
First step
The 75% of the total cost of each shirt ($3.22) is:
0.75 · $3.224 = $2.418
Second step
Adding the 75% to the total price:
$3.224 + $2.418 = $5.642
If we round it to the nearest hundredth:
$5.642 ≅ $5.64
Answer- Blair will sell each T-shirt at the carnival for $5.64.
Tessa bought stock in a restaurant for $177.00. Her stock is now worth $263.73. What is the percentage increase of the value of Tessa's stock?
The percentage increase of the value of Tessa's stock is 49%.
Stock is a term used to describe the shares of ownership of a company. It is sometimes also called equity.
To find the percentage value change, we use the formula given below
P = (N-O)/O*100
Here, P = percentage change, N = new value, O = old value.
P = (263.73-177)/177*100
P = 86.73/177*100
P = 8673/177
P = 49%
Therefore, we can conclude that the total percentage increase of the value of Tessa's stock is 49%.
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PLEASE HELP!!!
The number of shirts an associate at a local department store can fold and restock, r, varies directly with the amount of time the associate spends folding and restocking, t. If Rebecca spends 2 h folding and restocking, she can fold and restock 129 shirts.
Which direct linear variation equation models the information?
A. r = 64.8t
B. r = 127t
C. r = 64.5t
D. r = 131t
The equation for the direct linear variation that models the given information is: C. r = 64.5t.
How to Write the Equation of a Direct Linear Variation?The equation of a direct linear variation can be modelled as y = kx, where the variables are x and y, while the value of k is the constant of proportionality between the variables, x and y.
Given that:
r = number of shirts that can be fold and restock t = amount of time spent folding and restockingWe are told that r varies directly with t. Where k is the constant of proportionality, the equation of the direct linear variation between r and t can be expressed as r = kt.
Constant of proportionality, k = r/t
Number of shirts Rebecca can fold and restock (r) = 129
Amount of time she would spend (t) = 2
Find the constant of proportionality, k:
k = r/t = 129/2
k = 64.5
To write the equation for the direct linear variation, substitute k = 64.5 into r = kt:
r = 64.5t
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An equation for loudness L in decibels is given by L = 10 log R, where R is the relative intensity of the sound compared to the minimum threshold of human hearing. One
city’s emergency weather siren is 138 decibels loud. How many times greater than the
minimum threshold of hearing is the siren? Write your answer in scientific notation with one decimal place.
The relative intensity of the sound is 2.14 * 10 greater than the minimum threshold
How to determine the number of times?The loudness equation is given as
L = 10log(R)
Where
R represents the relative intensity of the sound
From the question, we have the value of R to be
R = 138
Next, we substitute 138 for R in the loudness equation L = 10log(R)
So, we have
L = 10log(138)
Evaluate the logarithmic expression
L = 10* 2.14
Rewrite as
L = 2.14 * 10
Hence, the number of times is 2.14 * 10 times
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Is (
–
4,
–
5) a solution to this system of equations?
y=
–
2x–13
y=
–
x+1
Answer:
Step-by-step explanation:
solution = (4 , 5)
y = 5 / x = 4
y = 2x - 13
5 = 2(4)- 3
5 = 8 - 3
5 = 5
the equation does make sense
y = x + 1
5 = 4 + 5
5 = 5
the equation does make sense
However, the questions asks if the solution works for both equations, and the solution does work for the first equation and the second one as well. The answer is yes, the solution does work for this system of equations.
write the equation of a line that passes through the point (4,-1/4) and has a slope of 0
Answer:
y = -1/4
Step-by-step explanation:
If the slope is o, that means that it is a horizontal line. The line passes though the point (4, -1/4) The horizontal line will have y as -1/4, no matter what x is.
Answer:
[tex]\sf y =\dfrac{-1}{4}[/tex]
Step-by-step explanation:
Equation of the line with slope 0 is y = c.
where c is the y-co-ordinate.
The line with slope 0 is a horizontal line that is parallel to x-axis.
[tex]\sf y =\dfrac{-1}{4}[/tex]
Given that points A, B, and Care the midpoints of their respective sides, which of the
following is true about the figure?
A) 1/2YZ = AC
B) BC | AB
C) ZX || AX
D) 2YZ = AC
Given that points A, B, and C are the midpoints of their respective sides, A) 1/2YZ = AC is true about the figure according to SSS congruent rule.
What is congruent rule?Triangle congruence: Two triangles are said to be congruent if all three of their corresponding sides and angles have the same measure. Slides, rotations, flips, and turns can be used to make these triangles appear identical. They would be in alignment if they were moved. Congruence is represented by the letter "."
When two figures are similar to one another in terms of their size and shape, this is what mathematicians mean by congruence. It can be demonstrated that two triangles are congruent using four congruence rules in general.
However, all six dimensions must be discovered. In light of this, it is possible to determine the congruence of triangles using just three of the six values. Triangles that are congruent have equal corresponding sides and angles.
YX = 2 × AX (A = midpoint of YX)
ZX = 2 × CX (C = midpoint of ZX)
∠X and ∠X are congruent as the Reflexive property rule.
Therefore, triangle XAC is congruent to triangle XYZ (SAS similarity theorem)
Since 2AX = XY and 2XC = XZ Then 2AC = YZ which SSS congruent rule.
So, the correct option is A) 1/2YZ = AC
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the value of x is referring to the hypotenuse of the triangle and not the arc that the x is under
Given that the length of one of the sides of the triangle is the radius, the length of the other leg of the triangle is also 6 units.
Therefore, this is an instance of a 45-45-90 triangle. The value of x can now be solve by
Given that the side length of the 45-45-90 triangle is 6 units, the length of the hypotenuse x is
[tex]x=6\sqrt[]{2}[/tex]Find the new price on a $14.50 shirt marked up 35%
Show Work.
Answer:$19.575
Solution
135/100of $14.50
=$19.575
or 35/100 of $14.50
=$5.075
$14.50+5.075
=$19.575
Enter an equivalent expression for (4.5)−5 ·
·
(4.5)11.
4.5
The expression which is equivalent to the given expression as in the task content is; 4.5⁶.
Which expression is equipped to the expression given in the task content?It follows from the task content that the expression which is equivalent to the given expression is to be determined.
Since the given expression is;
(4.5)-⁵ • (4.5)¹¹
Hence, it follows from the product of exponents law of indices that we have;
(4.5)^(-5 + 11)
= (4.5)⁶
Therefore, the expression which is equivalent is; 4.5⁶.
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I need help asap please
The pairs of points that on the linear equations are:
a) (1, 7) and (0, 10).
b) (1, 7/3) and (0, 2)
How to find the pair of coordinates on the lines?First, we need to find the slope of the equation of the line that passes through the points (-2, 6) and (1, -3).
Remember that if a line passes through two points (x₁, y₁) and (x₂, y₂) then the slope is:
a = (y₂ - y₁)/(x₂ - x₁)
Here we know that the line passes through the points (-2, 6) and (1, -3), then the slope is:
a = (-3 - 6)/(1 + 2) = -9/3 = -3
a) A parallel equation will have the same slope, so it will be of the form:
y = -3*x + b
To find the value of b w euse the fact that this line should pass through the point (2, 4), so:
4 = -3*2 + b
4 = -6 + b
4 + 6 = b = 10
The linear equation is:
y = -3*x + 10
To find two points we can evaluate in x = 1 and x = 0, we will get:
y = -3*1 + 10 = 7
y = -3*0 + 10 = 10
So we have the pair of points (1, 7) and (0, 10).
b) A perpendicular equation will have a slope equal to the inverse of the opposite, so we will have a line like:
y = (1/3)*x + c
To find the value of c we use the fact that this line passes through (3, 3), them:
3 = (1/3)*3 + c
3 = 1 + c
3 - 1 = c
2 = c
This line is:
y = (1/3)*x + 2
Again we evaluate in 0 and 1 to get the two points:
y = (1/3)*1 + 2 = 1/3 + 6/3 = 7/3
y = (1/3)*0 + 2 = 2
So we have the pair of points (1, 7/3) and (0, 2)
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Which expression is equivalent to the given expression?
-2x² + 8x 9 + 4x + 7x² + 2
A. -9x²
OB.
c.
-
D.
12x + 11
-5x² + 4x + 11
-9x² + 4x - 7
5x² + 12x - 7
Answer:
[tex]5x^{2} +12x-7[/tex]
Step-by-step explanation:
first, we need to simplify the expression: [tex]-2x^{2} +8x-9+4x+7x^{2} +2[/tex]we know that [tex]-2x^{2}[/tex] and [tex]7x^{2}[/tex] have the same exponent ([tex]x^{2}[/tex]) so we can combine them[tex]-2x^{2} +7x^{2} =5x^{2}[/tex]now we have left is [tex]+8x-9+4x+2[/tex]we also see that 8x and 4x have the same exponent (x). now we combine them8x+4x=12xnow we have left is -9+2-9 and 2 can be combined together-9+2=-7now we put each exponent in order (x^power biggest to least)(ex; [tex]x^{6}x^{5} x^{3}[/tex]) then just x then numbers without xit should be[tex]5x^{2} +12x-7[/tex]4x+4y=15 determine the missing coordination in the ordered pair (?,0) so that it will satisfy the missing equation
Answer:
3.75
Explanation:
Given the equation 4x+4y = 15, we are to find the x coordinate of equation
To do this we will find the x intercept of the equation.
when y = 0
4x+4y = 15
4x + 4(0) = 15
4x = 15
x = 15/4
x = 3.75
Hence the x coordinate of the equation is 3.75
surpriya makes papadums to sell in her food truck. she uses 12oz of dough to make each batch. She had 60oz of dough.and wants to know how many batches she can make
Answer:
5 batches
Step-by-step explanation:
60÷ 12=5 batches
Your business partner describes this as a high positive correlation. Is your partner correct? Why or why not?
(IMAGE INCLUDED)
Answer:
Yes, it is a positive correlation. It is a positive correlation because as the amount of calories goes up, the amount of fat goes up.
Solve the inequality. Check the numbers that represent solutions.
-8x + 19 < -13
5
3
4
2
6
Answer:
x equals four
Step-by-step explanation:
collect like terms
then it will be minus 8 x equals minus 13 minus 19 which gives minus 32. Divide both sides by the coefficient of x i.e minus 8
Then x is less than 4
Because you divided with minus so the sign will change
Write an equation of the line that passes through the given point and is parallel to the graph of the given equation (-8,6);x+4y=20
The equation of the line that passes through the point (-8,6) is x + 4y = 16.
What is a slope?
A line's slope often indicates the steepness and direction of the line. By calculating the difference between the coordinates of the two points, (x1,y1) and (x2,y2), it is simple to calculate the slope of a straight line between them. The letter "m" is frequently used to denote slope.
Given:
point = (-8,6)
equation : x+4y=20
x+4y=20
=> 4y = -x + 20
=> y = - x/4 + 5
Here the slope m is -1/4.
Now as the lines are parallel therefore the slope will be equal.
Therefore from the slope intercept form,
y - y1 = m (x - x1)
=> y - 6 = -1/4 ( x + 8 )
=> y - 6 = -x/4 - 2
=> x/4 + y = 4
=> x + 4y = 16
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A t-shirt and two pairs of shorts cost $53.50. At the same store, two t-shirts and three pairs of shorts cost $84.
Assuming that all shirts are sold for the same price, and all shorts cost the same, too, which statement is true?
A)A t-shirt is $7.50 and a pair of shorts is $23.
B)A t-shirt is $30.50 and a pair of shorts is $3.75.
D)A t-shirt is $3.75 and a pair of shorts is $30.50.
E)A t-shirt is $23 and a pair of shorts is $7.50
First option is correct. A t - shirt cost $7.50 and a pair of shorts cost $23
Simultaneous linear equation: what is it?First, it's crucial to understand linear equations.
Equation connects the two algebraic expressions with an equal to sign to demonstrate the equality between them.
Linear equations are those with one degree.
Simultaneous linear equations are two or more linear equations that can be solved simultaneously to find a common solution.
Let the price of one t-shirt be $x and price of one pair of shorts be $y
A t-shirt and two pairs of shorts cost $53.50
So, x + 2y = 53.50 .................... (1)
Two t-shirts and three pairs of shorts cost $84.
So, 2x + 3y = 84 ................ (2)
Multiplying (1) by 2,
2x + 4y = 107 .............(3)
Subtracting (2) from (3),
4y - 3y = 107 - 84
y = 23
Putting the value of y in (1)
x + 2[tex]\times[/tex]23 = 53.50
x = 53.50 - 46
x = 7.50
A t shirt cost $7.50 and a pair of shorts cost $23
First option is correct
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38. the graph of g is a horizontal shrink by a factor of 1/5 of the graph of f.
Help soon please
Answer:
g(x) = f(5x)
Step-by-step explanation:
We assume that "shrink by a factor of 1/5" means that horizontal distances on the graph of g(x) are 1/5 of those on the graph of f(x).
Dividing x by a dilation factor will cause horizontal dilation of a graph. Here, that factor is 1/5, so the desired function is ...
g(x) = f(x/(1/5))
g(x) = f(5x)
Algebra 1-Semester 1
What is the value of x in this equation
3(2x - 5)- 4x + 8 = -1.
Answer: x=3
Step-by-step explanation:
6x-15-4x+8=-1
2x-7=-1
2x=6
x=3
how many cups needed to make 3 dozen rolls
the police department is investigating the need for a speed camera to be implemented on swift road. a sample of 61 cars passing through that road on a particular day were randomly selected and their speeds recorded. the speed limit on swift road is 60 miles per hour (mph). the mean speed for the sample was calculated as 40 mph. the standard deviation of the speeds for the sample was calculated as 6 mph. the standard deviation for the population of cars driving on swift road is unknown.
(a) Approximate the population standard deviation (?) with the sample standard deviation (s).
Approximate the standard normal distribution with the Student's t distribution.
(b) The lower bound is 40.35 and the upper bound is 41.65.
(a) Approximate the population standard deviation (?) with the sample standard deviation (s).
Approximate the standard normal distribution with the Student's t distribution.
(b) The degree of freedom =n-1=60-1=59
Given a=0.1, t(0.05, df=59) =1.67 (from student t table)
So the lower bound is
xbar -t*s/vn = 41 -1.67*3/sqrt(60) =40.35
So the upper bound is
xbar +t*s/vn = 41 +1.67*3/sqrt(60) =41.65
The standard deviation is a statistical metric that determines how much a bunch of values deviate from the mean. Simply said, standard deviation quantifies the distance between integers in a data collection. The square root of the variance is used to construct this measure.
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A)y= 160.5 (2.3^x) + 20.5B)y= 99.8 (1.5^x) - 80.8C)y= 120.4 (0.8^x) – 209.1D)y= 147.3 (1.2^x) – 221.4Using technology, find the exponential function of best fit for the data.
The plot of the data in the table is shown below.
And the plot of the answer choices is plotted in the following figure.
As we can clearly see, the exponential function of choice D best fits the data in the table,
Hence, choice D is the correct one.
due now!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
A major weakness of the Articles of Confederation is that: B. States could ignore laws passed by the Congress.
What are the Articles of Confederation?The Articles of Confederation can be defined as the first written documents that were regarded as the Constitution of the United States of America, which was agreed upon by the thirteen (13) original states.
Under the Articles of Confederation, the national government was unable to raise revenue due to lack of enforcement powers of the confederate Congress.
In conclusion, we can reasonably infer and logically deduce that one of the limitations of the Articles of Confederation was the inability of Congress to enforce the laws it made because they can be ignored by states.
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Complete Question:
What was one major weakness of the Articles of Confederation?
A. State governments lost most of their political power.
B. States could ignore laws passed by the Congress.
C. The national government could not negotiate treaties.
O D. There was no way for new territories to become states.
Talisa says that she has 34 colored pencils in her art box. her friend jaime has 58 colored pencils in her box. about how many more colored pencils does jaime have than talisa ? use rounding to help you decide.
The colored pencils does jaime have more than talisa is 24
what is arithmetic operator?An arithmetic operator is a mathematical function that takes two operands and performs a calculation on them.
They are used in common arithmetic and most computer languages contain a set of such operators that can be used within equations to perform a number of types of sequential calculation. Basic arithmetic operators include:
:-Addition (+)
:-Subtraction (-)
:-Multiplication (×)
:-Division (÷)
so;
A.T.Q:-
The colored pencils does talisa have are 34
The colored pencils does jaime have are 58
∴ by using arithmetic operator Subtraction (-) , we conclude that how more colored pencils does jaime have than talisa
∵ jaime's colored pencils - talisa's colored pencils
⇒ 58- 34
⇒24
hence; jaime have 24 pencils more than talisa
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graph the segment find it'smidpoint then graph the midpointX(7,5) Y(-3,-5)
The midpoint, that is the middle point of any given line segment can be calculated if the endpoints have been made available.
The endpoints for the line segment is,
(7, 5) and (-3, -5) for points X and Y respectively.
The middle point can be found at this position;
(x1 + x2) / 2 and (y1 + y2) / 2
The points are shown as
(7, 5) = (x1, y1)
(-3, -5) = x2, y2)
Therefore we now have,
Midpoint = (7 + [-3])/2 and (5 + [-5])/2
Midpoint = (7-3)/2 and (0)/2
Midpoint = 4/2 and 0/2
Midpoint = (2, 0)
x+y+z=4
x = -2y
z = -3y
We're given : x+y+z = 4
x = -2y
z = -3y
So, we replace x = -2y and z = -3y in the original equation.
-> -2y + y + -3y = 4
-> -4y = 4
-> y = -1
Now we have the value of y, we substitute it into x and z
x = -2y = -2(-1) = 2
z = -3(-1) = 3