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3 years ago

A120 B108 C135 D144 Please help me

Mathematics

2 answers:

Sloan [31]3 years ago

8 0

Answer:

B - 108

Step-by-step explanation:

A regular pentagon is 540 degrees. Divide 540 by 5 (since there are five sides) which equals 108 degrees.

Alex3 years ago

6 0

A) 120°,
since three of those z angles can be shown. That would be 360°.

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The points (-5,r) and (-2,15) lie on a line with a slope of 3. Find the missing coordinate r. <br> .

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3 years ago

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Firdavs [7]

Given:

A figure of a parallelogram.

The vertex angles are $(12b+8)^\circ,(5b+2)^\circ,2a^\circ$ .

To find:

The values of a and b.

Solution:

We know that the pairs of consecutive angles of a parallelogram are supplementary angles. It mean their sum is 180 degrees.

$(12b+8)^\circ+(5b+2)^\circ=180^\circ$ (Supplementary angles)

$(17b+10)^\circ=180^\circ$

$17b+10=180$

Subtract 10 from both sides.

$17b=180-10$

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Divide both sides by 17.

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And,

$(5b+2)^\circ+2a^\circ=180^\circ$ (Supplementary angles)

$52^\circ+2a^\circ=180^\circ$

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$a=64$

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3 years ago