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Gala2k [10]
4 years ago
15

What value of x makes the equation true?

Mathematics
1 answer:
serious [3.7K]4 years ago
3 0
-4.9=-5.7+0.8
-4.9=-4.9
Answer is C
You might be interested in
If p varies directly with T and p =105 when T=400.Find p when T =500
kumpel [21]

Answer:

<h3>p = 131.25</h3>

Step-by-step explanation:

The variation p varies directly with T is written as

p = kT

where k is the constant of proportionality

To find p when T =500 we must first find the formula for the variation

That's

when p = 105 and T = 400

105 = 400k

Divide both sides by 400

<h3>k =  \frac{21}{80}</h3>

So the formula for the variation is

<h2>p =  \frac{21}{80} T</h2>

when

T = 500

Substitute it into the above formula

That's

p =  \frac{21}{80}  \times 500

Simplify

The final answer is

<h3>p = 131.25</h3>

Hope this helps you

7 0
4 years ago
Evaluate the function f(x) = 2x3 - 6x + 1 for f(-2).
erma4kov [3.2K]

Answer:

- 3

Step-by-step explanation:

f(x) = 2 {x}^{3}  - 6x + 1 \\ plugging \: x =  - 2 \\ f( - 2) = 2( { - 2})^{3}  - 6( - 2)+ 1  \\  = 2 \times ( - 8) + 12 + 1 \\  =  - 16 + 13 \\  =  - 3 \\ f( - 2) =  - 3

7 0
4 years ago
What method would best to solve x=5y. 2x-3y=7
ser-zykov [4K]

Answer:

substituting x=5y into 2x-3y=7, Answer: y = 1 x = 5

Step-by-step explanation:

2(5y)-3y=7

10y-3y=7

7y=7

y=1

substitute y=1 into x=5y

x=5(1)

x=5


8 0
4 years ago
What decimal is equivalent to 63/75?
anygoal [31]

Answer: 0.84

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
200-3.5 x 2.8 what is the product?
stiks02 [169]

Answer:

190.2

Explanation:

3.5x2.8=9.8

200-9.8=190.2

7 0
3 years ago
Read 2 more answers
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