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Rainbow [258]
4 years ago
5

Y varies directly with the square x. If y= 27 when x = 3, find y when x = -4

Mathematics
1 answer:
Lana71 [14]4 years ago
6 0

Answer:

y~x²

y/x²= k

27/3²=3

therefore k= 3

y/ -4 = k

y / -4= 3

3y = -4

y = -4

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HELPP ILL GIVE MAD POINT PLEASE
svet-max [94.6K]
Since it is looking for the sum
at S3, replace n with 3 , 2, and 1 , solve the equation  and add all of answers together
 when s = 3 the equation becomes 5(1/3)^3-1
5(1/3)^2 = 5/9

when s = 2 the equation becomes 5(1/3)^2-1
5(1/3)^1 = 5/3

when s = 1 the equation becomes 5(1/3)^1-1
5(1/3)^0 = 5

5/9 + 5/3 + 5 =  65/9

the answer is the 3rd choice

8 0
3 years ago
Its for a test and its urgent please help :)
geniusboy [140]

Answer:

<h2>34</h2><h2 />

Step-by-step explanation:

| 2 - 4a | - 2(b - 7)

let a = 3, b = -5

substitute a = 3, b = -5 into the equation:

| 2 - 4a | - 2(b - 7)

= | 2 - 4(3) | - 2(-5 - 7)

= | 2 - 12 | - 2(-12)

= | -10 | + 24

= 10 + 24

= 34

3 0
3 years ago
Which situation is linear? A) a sample of bacteria is doubling every day B) the number of cars each hour on a road for a week C)
Naily [24]
I think it would be A
8 0
4 years ago
Read 2 more answers
The 300 students at a school voted on four possibilities for an end-of-the-year event. The results are shown in the graph below.
fenix001 [56]

Step-by-step explanation:

44-18=26

if 300=100 percent

? =26 percent

26×300=7800

7800÷100=78

the answer is 78 students

5 0
3 years ago
Triangle ABC is shown below. Using a compass and straightedge, construct the dilation of ABC centered at B with a scale factor o
qaws [65]

Triangle ABC would remain the same because a dilation generally preserves the measure of an angle.

<h3>What is scale factor?</h3>

A scale factor simply refers to a ratio of two (2) corresponding side lengths or diameter in two (2) similar geometric figures such as triangles.

In this exercise, you're required to construct a dilation of triangle ABC that is centered at B with a scale factor of 2 by using a compass and straightedge.

In conclusion, triangle ABC would remain the same because a dilation generally preserves the measure of an angle.

Read more on scale factor here: brainly.com/question/2826496

#SPJ1

4 0
3 years ago
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