3 years ago

ZWXY is a right angle. If Z

Mathematics

1 answer:

alexdok [17]3 years ago

4 0

Answer:

The value of x = 7

Step-by-step explanation:

To solve this, we will have to fist of all know that the sum of all the angles in a right-angled triangle is 180 degrees.

In addition to that, since the triangle is a right-angled triangle, automatically, one of the angles is = 90 degrees

The next thing to do is to add all the angles together and equate them to 180 degrees.

Angle WXZ + Angle ZXY + 90 = 180 degrees

7x+8 + 5x-2 + 90 = 180

12x + 96 = 180

12x = 84

x = 7

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If three times a number minus 2 equals 13, what is the number?

Nana76 [90]

Change the messy words into numerals
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3n - 2 = 13
take 2 to the other side
3n - 2 + (2) = 13 + (2)
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Divide by 3 on either sides to isolate n
$\frac{3n}{3}$ = $\frac{15}{3}$
3 and 3 cancels out

n = 5

check:
3 times 5 minus 2 equals 13
3   × 5 - 2 = 13
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