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juin [17]
3 years ago
15

PLEASE HELP FOR 48 POINTS PLEASE! show/explain your answer and work

Mathematics
2 answers:
Rasek [7]3 years ago
6 0

Answer:

C

Step-by-step explanation:

The equation you are looking for must look something like y = k*x

The easiest way to find it is to try 2 points to see if k would be equal in both cases. Do this for each choice.

A

  • y = kx
  • x = 5
  • y = 1
  • y = kx
  • 1 = k*5
  • k = 1/5
  • y = kx
  • x = 7
  • y = 2
  • 2 = k*7
  • k = 2/7

k is not the same in both case. A is not the  answer.

==================

B

Using the steps above

  • x = 10
  • y = -6
  • k = -6/10 = - 0.6
  • x = 6
  • y = -3
  • k = - 3/6
  • k = -1/2          

B is not the answer.

=====================

C

  • x = 3
  • y = 9
  • y = kx
  • 9 = k*3
  • k = 9/3
  • k = 3
  • x = 6
  • y = 18
  • y = kx
  • 18 = 6k
  • 18/6 = 6/6 k
  • k = 3

C is the answer

====================

You can try D yourself

pentagon [3]3 years ago
4 0

Answer:

c  This is the direct variation

Step-by-step explanation:

The equation for direct variation is y= kx

Solving this for k

y/x =k

So y/x must be a constant

a.  9/3 =3

2/7 does not =3  so this is not a direct variation


b 1/2 = .5

-3/6 = -.5

This is not the same so this is not a direct variation


c.  27/9 =3

18/6 =3

9/3 =3

This is a direct variation with a constant of 3


d 5/-7 = -5/7

1/-3 = -1/3

This is not the same so this is not a direct variation

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The figure below is a parallelogram. Find the measure of the<br> variables.
Ilya [14]

Answer:

B.

Step-by-step explanation:

Since 6 = 5r + 1, r = 1

As for s, if s is 2, then you can do

4 x 2 + 5 = 13 & 6 x 2 + 1 = 13

13 = 13

So B!

Hope that helps!

8 0
3 years ago
PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU B
Ivanshal [37]

Answer:

Your answer would be B

Step-by-step explanation:

a way to remember it is:

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5 0
3 years ago
The moon is about 382,500km away from Earth. This distance actually varies by about 22,500km. What are the maximum and minimum d
KiRa [710]

Answer:

The minimum distance to the moon is of 360,000 km and the maximum distance is of 405,000 km

Step-by-step explanation:

The maximum distance is found adding the variation.

The minimum distance is found subtracting the variation.

We have that:

Distance: 382,500 km

Variation: 22,500 km

So

Maximum distance: 382500 + 22500 = 405,000 km

Minimum distance: 382500 - 22500 = 360,000 km

The minimum distance to the moon is of 360,000 km and the maximum distance is of 405,000 km

6 0
3 years ago
What is the estimate height of 129.3
Anika [276]
129 .................
8 0
2 years ago
For what value of a does (1/7)^3a+3=343^a-1?
CaHeK987 [17]

Answer: ok, remember that when

x^a=x^b, when x=x, then a=b

also

x^-m=1/(x^m)

and

(x^m)^n=x^(mn)

so

we can rewrite 1/7 as 7^-1

so

and 343=7^3

7=7 so

-3a-3=3a-3

add 3a to both sides

-3=6a-3

add 3 to both sides

0=6a

0=a

a=0

Answer: 0

By: apologiabiology

5 0
4 years ago
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