I need help with solving -7 4/7+(-3 2/5)

Mathematics

1 answer:

OLga [1]4 years ago

5 0

Answer:

-10 24/35

Step-by-step explanation:

First you need a common denominator to add or subtract. The common denominator woulb be 35. Now you have -7 20/35-3 14/35 which equals to -10 24/35.

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Tell which equation you use to solve for one of the variables when solving the system by substitution: 2x + 3y = 5 or 4x - y =3

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<span>
2x + 3y = 5
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I am going to use </span>4x - y =3
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@###GEOMETRY, SEE PHOTO! PLEASE HELP ASAP!####@

Dafna11 [192]

Since this is a right triangle, we can use our trigonometric functions to solve for x.

Since we know the adjacent side and hypotenuse, we will use cosine.

Based on the function $\cos(x) = \frac{adj}{hyp}$ , we can solve for x. The adjacent side is 7 and the hypotenuse is 12. Plugging this in, we get $\cos(x) = \frac{7}{12}$ .

Now, we must use our inverse trigonometric functions to solve for x:
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The inverse cosine and cosine on the left side cancel, leaving you with:
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I need help with solving -7 4/7+(-3 2/5)​

I need help with solving -7 4/7+(-3 2/5)