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2 years ago

Can somebody help me with this?

Mathematics

2 answers:

SCORPION-xisa [38]2 years ago

6 0

Answer:

Step-by-step explanation:

<1+<2=180 (angle addition postulate)

<1=39 (given)

39+<2=180 (substitution property)

<2=180-39 (subtraction property)

<2=141 ( simplification)

C, or 141 degrees. Have a nice day!

lesya [120]2 years ago

4 0

Answer:

141 °

since they are supplementary angles and they always add to 180 °

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The function of the length z in meters of the side parallel to the wall is A(z) = z/2(210 - z)

<h3>How to write a function of the length z in meters of the side parallel to the wall?</h3>

The given parameters are:

Perimeter = 210 meters

Let the length parallel to the wall be represented as z and the width be x

So, the perimeter of the fence is

P = 2x + z

This gives

210 = 2x + z

Make x the subject

x = 1/2(210 - z)

The area of the wall is calculated as

A = xz

So, we have

A = 1/2(210 - z) * z

This gives

A = z/2(210 - z)

Rewrite as

A(z) = z/2(210 - z)

Hence, the function of the length z in meters of the side parallel to the wall is A(z) = z/2(210 - z)