labrandonanderson00
14.08.2020 •
Mathematics
The sum of a number and two equal to negative seven. Translate this sentence to an equation and then find the number
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Ответ:
-9
Step-by-step explanation:
x+2=-7
x+2-2=-7-2
x=-9
Ответ:
Step-by-step explanation:
see the attached figure to better understand the problem
we know that
In the right triangle XYZ the cosine of 70 degrees is equal to divide the adjacent side to angle of 70 degrees (XY) by the hypotenuse (XZ)
so
substitute the given value