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Afina-wow [57]
3 years ago
14

What does x equal???????

Mathematics
1 answer:
melamori03 [73]3 years ago
6 0

Answer:

-4x + 10x - 12 = -3x - 39

6x - 12 = -3x - 39

9x - 12 = -39

9x = -27

x = -3

Step-by-step explanation:

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Del ray can run 20 1/2 miles in 2 1/4 hours. How many miles per hour can he run?
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3 years ago
A sailboat's Saul has three sides that are all the same length. Each side measures x - 10 units. The sail's perimeter is 63 unit
ruslelena [56]

Answer:

The value of 'x' is 31 unit

Step-by-step explanation:

Given:

Measure of each side = x-10\ units

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Solution:

Now we can see that from given data.

A sailboat's Saul has three sides.

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So we can say that;

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3 years ago
If you place a cup of 210 degree Fahrenheit coffee on a table in a room that is 68 degrees fareinheit, and ten minutes later, it
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132/142=e^(-10k)

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T(t)=68+142e^(-0.0073t)  so how long until it reaches 180°?

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112=142e^(-0.0073t)

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ln(112/142)=-0.0073t

t= -ln(112/142)/(0.0073)

t≈32.51 minutes


8 0
3 years ago
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