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Mademuasel [1]
4 years ago
11

I need help please?!!!!

Mathematics
1 answer:
Readme [11.4K]4 years ago
8 0

The answer is -2. X is -2.

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Write an appropriate direct variation equation if y = 18 when x = 2
Sergeu [11.5K]

Answer:

y=9x

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a direct variation if it can be expressed in the form k=\frac{y}{x} or y=kx

In this problem we have

y=18 when x=2

Find the value of the constant of proportionality k

k=\frac{y}{x} ----> k=\frac{18}{2}=9

therefore

The equation is equal to

y=9x

8 0
4 years ago
What is the length of EF in the right triangle below?
Tema [17]

Answer:

A

Step-by-step explanation:

Since the triangle is right use Pythagoras' identity to find EF

The square on the hypotenuse is equal to the sum of the squares on the other two sides, that is

EF² + DF² = DE² ← substitute values

EF² + 12² = 18², that is

EF² + 144 = 324 ( subtract 144 from both sides )

EF² = 180 ( take the square root of both sides )

EF = \sqrt{180} → A

3 0
4 years ago
Find z.<br><br> What is the length of the missing leg?<br><br> b = _____ miles
ycow [4]

Answer:

5√3

Step-by-step explanation:

tan30= 5/z

1/√3= 5/z

z= 5√3

6 0
3 years ago
Read 2 more answers
Select the correct response for three consecutive integers whose sum is 42.
Kisachek [45]

Answer:

C. 13, 14, 15

Step-by-step explanation:

All you do is add them up and it equals to 42.

5 0
3 years ago
Read 2 more answers
Can you help Me? I think i got the answer but im not sure can you help me?
luda_lava [24]

Answer:

think its cineplex hope I helped please mark brainliest

4 0
4 years ago
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