ABC is an isosceles right triangle in which has a slope of -1 and mABC = 90°. ABC is dilated by a scale factor of 1.8 with the origin as the center of dilation, resulting in the image A'B'C'. What is the slope of ?
A. - 1
B. 0
C. 1
D. 1.5
E. 2

Answers

Answer 1

Let ABC be the triangle where A is at (0, a), B is at (0, 0) and C is at (a, 0).

Note that BA = BC = a, as ABC is isosceles.

Also, ∠B = 90°

After a dilation with a scale factor of 1.8 with the origin as the center of dilation, length BA will be increased to 1.8 times and will become B'A'.

So, point A will be moved to (0, 1.8a).

Similarly, point C will be moved to (1.8a, 0).

Now, slope of A'C' = [tex]\frac{0-1.8a}{1.8a-0}[/tex]

= - 1.

Hence, the dilation preserves the slope of the hypotenuse.

Answer 2

Answer:

-1

Step-by-step explanation:


Related Questions

A cellular phone company charges a $49.99 monthly fee for 600 free minutes. Each additional minute costs $.35. This month you used 750 minutes. How much do you owe?

Answers

First you need to subtract 750-600= 150.

Then 150 time .35=52.5.

Lastly 52.5+49.99= 102.49

If f(x)= 6x+7, determine the value of f(-5)

Answers

You would substitute or plug in -5 wherever there is an x in the equation.

f(-5) = 6(-5) + 7
f(-5)= -30 + 7
f(-5) = -23
x = -5
so f(-5) = 6(-5)+7
f(-5) = -30 +7
f(-5)= -23

A flower bed is in the shape of a rectangular prism. It’s dimensions are 3 feet wide by 16 feet long by 6 inches deep.

A: how many cubic feet of topsoil do you need to fill the flower bed?

B: you can spread topsoil at a rate of 4 cubic feet per minute. How long will it take you to spread all the top top soil?

Answers

I think it's B

I HOPE I HELPED

Need help with 13 asap

Answers

I’m hoping you are talking about:
Factor -1/2 out of -1/2x + 6
If so then the answer is
-1/2(x-3)

what is the word form and standard form

Answers

Answer:

Step-by-step explanation:

The second 1 is eight hundred and ninedey seven then it’s 899+90+70

which of the following demonstrates a proper application of the division property of exponents

Answers

the answer is A or B but i think A is the true

Simplify this algebraic expression, please!

Answers

Using the Division Property of Equality you need to divide.

How to get answer:

Reduce the expression by cancelling the common factors.

Factor 3 out of 3y^6.

Cancel the common factor.

Rewrite the expression.

Reduce the expression by cancelling the common factors.

−1⋅14

Last step: Multiply −1 by 14.

Answer: −14

Please help i will mark brainly

Answers

It would be positive. The minus sign makes the negative a positive and adds the two. Just remember keep, change, change.

The answer would be positive since the subtraction sign and the negative cancel each other out and makes the negative a positive which means at the end they will both be positive and when you add numbers with the same sign the answer will have that sign

The diagram shows a hexagon drawn inside a rectangle.







What is the area of the hexagon?

A. 21 cm²
B. 24 cm²
C. 30 cm²
D. 54 cm²

Answers

The answer is my good student

Answer is "C" 30 sq cm


Which is the equation of the graphed line written in standard form? y = x x – 1/2y = 0 x – y = 0 y =1/2x

Answers

The standard for of this equation is x – y = 0

Firstly, options A and D are not in standard form, so they are not options.

To decided between B and C, we choose a point on the line and see if it works. For example, we'll use (2, 2).

x – y = 0

2 - 2 = 0

0 = 0

This is true for option C. Therefore, it is correct.

Final answer:

The equation of the graphed line is x - y = 0.

Explanation:

The equation of the graphed line in standard form is x - y = 0.

Standard form of a linear equation is written as Ax + By = C, where A, B, and C are constants. In this case, since the slope of the line is 1 and the y-intercept is 0, the equation becomes x - y = 0.

Therefore, the correct answer is x - y = 0.

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A zucchini plant in Darnell's garden was 9 centimeters tall when it was first planted since then it has grown approximwntly .7 centimeters per day. What is the function?

Answers

I will use x for days. The equation is y=0.7x+9

0.7 is the growth per day * the days it has been growing.

+9 is the initial height

y is total height.

y=0.7x+9

2/3x - 1 = -3/5, but what is x?

Answers

3/5 , not sure if it’s right. Hope it is though :)

Ana and chuyen are exploring underground caves anas location is -30 feet below the cave entrance and chuyen's patience is -12 feet below the cave entrance which girl is located farther from the cave entrance

Answers

Ana' location is further away from the entrance
Final answer:

Ana is located farther from the cave entrance than Chuyen. She is at -30 feet below the entrance, while Chuyen is at -12 feet, and the absolute value of Ana's depth is greater.

Explanation:

The comparison of depths below the cave entrance for Ana and Chuyen is essentially a basic math problem involving negative numbers. In this case, we are looking at distances relative to a reference point, which is the entrance of the cave.

Ana's location is -30 feet below the cave entrance, while Chuyen's location is -12 feet below the cave entrance. To determine which girl is located farther from the cave entrance, we need to compare the absolute value of these numbers because depths below ground are considered negative.

Absolute value of Ana's depth: |-30| = 30Absolute value of Chuyen's depth: |-12| = 12

Because Ana's absolute depth is greater than Chuyen's, Ana is located farther from the cave entrance.

Which of the following sets contain all roots of the polynomial

Answers

All these given roots are contained in option C.

The given equation is :

[tex]9x^{3}+9x^{2}-4x-4=0[/tex]

[tex]9x^{2}(x+1)-4(x+1)=0[/tex]

[tex](9x^{2}-4)(x+1)=0[/tex]

[tex]9x^{2}-4=0,x+1=0[/tex]

[tex]x^{2}=\frac{4}{9},x=-1[/tex]

[tex]x=\frac{2}{3},x=-1[/tex]

Roots = [tex]-1,\frac{-2}{3} ,\frac{2}{3}[/tex]

Hence these lie in between [tex](\frac{-3}{2} ,\frac{3}{2})[/tex]


If h(x)= 3x+5 and h(a) =27, then what is the value of a ?

Answers

h(x) = 3x + 5

h(a) = 27


We can write this as 3a + 5 = 27

Now, we just need to solve for a.

Subtract 5 from both sides

3a = 22

Divide 3 from both sides.

a = 7.33

Now, let's plug 7.33 back into the original equation.

3 * 7.33 + 5 = 27

22 + 5 = 27

27 = 27 √ this is correct

Final answer:

To find 'a' in the equation h(x)=3x+5 when h(a)=27, we substitute h(a) with 27 and solve for 'a'. After some simple algebra, we find that 'a' equals approximately 7.33.

Explanation:

This question is about solving algebraic equations. Here, we are given that h(x)= 3x+5 and h(a) =27. To find the value of 'a', we need to substitute 'h(a)' with 27 in the equation h(x)= 3x+5.

So, 27 = 3a + 5. To isolate 'a', we'll first subtract 5 from both sides of the equation: 27-5 = 3a, which simplifies to 22 = 3a.

Next, we divide both sides of equation by 3 to solve for 'a': 22/3 = a, hence a = 22/3 or approximately 7.33.

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Which of the following is equal to (the sqrt of) √-12 ?

A: 2t√3

B: 2√3

C: -2√3

D: 2√3t

Answers

The answer to this is B

what is the opposite of -3?

Answers

Answer: 3

Step-by-step explanation: Here we're asked to determine the opposite of the following integer which is -3.

Think of the opposite of an integer in terms of a number line. The opposite of an integer is the same distance from zero as the original integer but on the opposite side of 0.

Since -3 is 3 units to the left of 0,

its opposite will be 3 units to the right of 0.

So the opposite of -3 is 3.

I have also shown my work on a number line on the whiteboard.

The opposite of the given integer -3 is 3. Therefore, option D is the correct answer.

The given integer is -3.

Here, -3 is negative integer.

Integers include all whole numbers and negative numbers. This means if we include negative numbers along with whole numbers, we form a set of integers.

The opposite of -3 is 3. This is because when two numbers have opposite signs, they add up to zero. For example, -3 + 3 = 0.

Therefore, option D is the correct answer.

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the product of a number and 4 increased by 16 is -2

Answers

Let n = the unknown number

"The product of a number and 4" = 4 * n = 4n

"increased by 16" = + 16

Set it all equal to - 2.

4n + 16 = - 2

Subtract 16 from both sides to get constants on one side and variables on the other.

4n = - 2 - 16

Combine like terms:

4n = - 18

Divide both sides by 4 to isolate variable n.

n = - 18 / 4

= - 4 and 2/4 = - 4 and 1/2

Please help me I need this question done by tonight. The amount that a consultant charges for her work can be modeled using a linear function. For 4 hours of work, the consultant charges $400. For 5 hours of work, she charges $450. How much money does the consultant earn each hour?

Answers

Answer: The consultant earn $50 each hour.

Explanation:

It is given that for 4 hours of work, the consultant charges $400. For 5 hours of work, she charges $450. The amount that a consultant charges for her work can be modeled using a linear function.

If the linear function represents the amount earn by consultant in hours the the coordinates can be written as (4, 400) and (5, 450).

If we want to find how much money does the consultant earn each hour, so first we have to find the slope of linear function which passing through two points (4, 400) and (5, 450).

[tex]\text{Slope}=\frac{y_2-y_1}{x_2-x_1}[/tex]

[tex]\text{Slope}=\frac{450-400}{5-4}[/tex]

[tex]\text{Slope}=\frac{50}{1}[/tex]

[tex]\text{Slope}=50[/tex]

In the linear function the slope show the earning of consultant per hour, therefore consultant earn $50 each hour.

Natalie went to the shoe store and bought two pairs of sneakers. One pair was $35.60, and the other was $49.95. If she has $100.00, how much will she have left after buying sneakers?

Answers

First you need to add the prices to get 85.55. Then 100 - 85.55 is 14.45.




She will have $14.45 leftover

She will have 14.45 left over

Dakota read 130 pages over the weekend. Dajuan read 165 pages over the weekend. Which prime number do the prime factorization of 130 and 165 have in common?

Answers

In order to find the common prime factors of 130 and 165, let us first find prime factors of 130 and 165 individually and then we can compare.

Prime factors of 130 can be found as:

130 is a composite number because it has factors other than 1 and itself.

It is not a prime number. The 8 factors of 130 are 1, 2, 5, 10, 13, 26, 65, and 130. The factor pairs of 130 are 1 x 130, 2 x 65, 5 x 26, and 10 x 13.

The proper factors of 130 are 1, 2, 5, 10, 13, 26, and 65.

The prime factors of 130 are 2, 5, and 13.

Prime factors of 165 can be found as:

165 is a composite number because it has factors other than 1 and itself. It is not a prime number.

The 8 factors of 165 are 1, 3, 5, 11, 15, 33, 55, and 165. The factor pairs of 165 are 1 x 165, 3 x 55, 5 x 33, and 11 x 15.

The proper factors of 165 are 1, 3, 5, 11, 15, 33, and 55.

The prime factors of 165 are 3, 5, and 11.

Answer: On comparing the two, we can see that 5 is the common prime factor of both 130 and 165.

Steven has 5/6lb of jelly beans and 1/3lbs of gummy bears. How many more pounds of jelly beans than gummy bears does he have ?

Answers

1/3=2/6

5/6-2/6= 3/6 or 1/2

He has 1/2  pound of more jelly beans than gummy bears.

☺☻♥Hope I helped!☻☺♥

Good Luck!♣

Steven has 1/2 lb. more of jelly beans than gummy bears.

1. The fractions need to have the same denomination (bottom number). The lowest common multiple of 3 and 6, is 6. So multiply 1/3 by 2 in order to get 2/6.

2. Now that the fractions have the same denominator, subtract 2/6 from 5/6 to get 3/6.

3. Simplify the fraction so it's in simplest from. 3/6 is the same as 1/2.

Determine which line is steeper. Explain your answer. What does it represent in this situation?

Answers

Pennington is steeper as the m/h is faster than Williams.

need help asap im not good at math

Answers

Translations

y = f (x) + m up m units

y = f (x) - m down m units

y = f (x + m) left m units

y = f (x - m) right m units

Stretches/Shrinks

y = n · f (x) stretch vertically by a factor of n

y = 1/n · f (x) shrink vertically by a factor of m (stretch by 1/n)

y = f (1/n x) stretch horizonally by a factor of n

y = f (nx) shrink horizontally by a factor of n (stretch by 1/n)

Reflections

y = - f (x) reflect over x-axis (over line y = 0)

y = f (- x) reflect over y-axis (over line x = 0)

x = f (y) reflect over line y = x

------------------------------------------------------------------------

g(x) = -1 · f(x) = -f(x) → reflect over x-axisAnswer: A. The graph flips over the x-axis

The answer is the first option: The graph flips over the x-axis.

The explanation for this exercise is shown below:

1. When you multiply a function by -1 alll the positives values of y now will be negative, and the points negative y-axis.

2. As you can see in the figure attached, if you have a function [tex]f(x)=x^{2}[/tex] and you multiply it by -1, the graph will flip over the x-axis.

the total cost c a painter charges to paint a house depends on the number h of hours its takes to paint the house. this situation can be represented by the function rule c= 15h + 245 . what is the cost if the painter works for 30.25 hours

Answers

given that

c = 15h + 245

when h = 30.35  , cost c = (15 × 30.35) + 245

= 453.75 + 245 = 698.75

so cost if painter works = 698.75 unit of currency.

Final answer:

To find the total cost for a painter working 30.25 hours using the function rule c= 15h + 245, multiply the hourly rate (15) by the hours worked (30.25) and add the fixed cost (245). The total cost would be $698.75.

Explanation:

To calculate the total cost c a painter charges to paint a house given the function rule c= 15h + 245, where h is the number of hours worked, we need to substitute the value of h with the given number of hours. In this case, the painter works for 30.25 hours. Therefore, the cost calculation would be:

c = 15 × 30.25 + 245

Step 1: Multiply the hourly rate by the total hours worked:

15 × 30.25 = 453.75

Step 2: Add the fixed cost to the result from step 1:

c = 453.75 + 245

Step 3: Combine the values to get the total cost:

c = 698.75

So, if the painter works for 30.25 hours, the total cost to paint the house would be $698.75.

what is 75% increase followed by a 33 1/3% decrease

a. greater than original
B. Same as the original
c. Less than the original

Answers

I believe it is “C”

Lana got a tip of 16%, or 0.16For delivering pizzas for the party if the total bill for the pizza was $98.19 about how much was Lana’s tip

Answers

You can answer this question by writing and solving an equation to model the calculation of the total bill.

[tex]1.16x=98.19[/tex]

[tex]x=84.65[/tex]

$84.65

Final answer:

The tip Lana received corresponds to 16% of the bill total which amounts to about $15.71.

Explanation:

In this question, we are asked to calculate Lana's tip from her pizza delivery. As it's described that the tip was 16% of the total bill, we use the percentage formula to find out how much Lana got. The formula for finding a percentage of a number is Percent% x Total Amount.

To apply this formula here, we'll multiply the total bill amount ($98.19) by 0.16 (which represents the 16% tip as a decimal). This will give us Lana's tip. The calculation will look like this: $98.19 * 0.16 = $15.71. So Lana's tip for the pizza delivery was approximately $15.71.

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find the calculated value of the rational expression 2x + 6/4x - 8

Answers

Answer:

2

Step-by-step explanation:

To calculate the value of the given rational expression (2x + 6) / (4x - 8), it is a good idea to simplify it first.

To simplify this expression, we can take the common out of both, the numerator and the denominator, as shown:

From the term 2x + 6, we can take out 2 as the common and from 4x-8, we can take 4 as common so the terms will become;

2 (x + 3) / 4 (x - 2)

2 from the numerator and 4 from the denominator will get cancelled and we will get x+3 / 2(x-2)

so we will solve for x-2 = 0 to get x = 2 which is the excluded value.


[tex]5\frac{42}{170} - 3\frac{80}{170} [/tex]

Answers

[tex]5\dfrac{42}{170}-3\dfrac{80}{170}=(5-3)+\left(\dfrac{42}{170}-\dfrac{80}{170}\right)\\\\=2+\left(-\dfrac{38}{170}\right)=2-\dfrac{32}{170}=1\dfrac{170}{170}-\dfrac{38}{170}\\\\=1\dfrac{170-38}{170}=1\dfrac{132}{170}=1\dfrac{132:2}{170:2}=1\dfrac{66}{85}[/tex]


[tex]5\dfrac{42}{170}-3\dfrac{80}{170}=4\dfrac{170+42}{170}-3\dfrac{80}{170}\\\\=(4-3)+\left(\dfrac{212}{170}-\dfrac{80}{170}\right)=1+\dfrac{212-80}{170}\\\\=1+\dfrac{132}{170}=1\dfrac{132:2}{170:2}=1\dfrac{66}{85}[/tex]

X/9 × 4 what is the number of X? Im very confused.

Answers

Since x/9•4 is a multiple step problem you could do it one of two ways you could either divide 4 since you are multiplying four or you can multiply by nine since you are dividing by nine

Answer:


Step-by-step explanation:


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