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2 years ago

Solve for the value of r. (6r-7) 55°

Mathematics

1 answer:

monitta2 years ago

8 0

Answer:

r=7

Step-by-step explanation:

6r-7+90+55=180

6r+138=180 ----- 6r=180-138

6r=42 ----- divide both sides by 6

r=7

(We get the 90 from the 90degrees in the middle of this supplementary angle and the total, 180, from the straight angle made from all three angles.)

hope this helps!

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Read 2 more answers

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Step-by-step explanation:

HERE,

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$\boxed{\red{\sf{circle~ circumference=2\times \pi \times r }}}$

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$\tt{2 \times \dfrac{22}{\cancel{7}} \times \cancel{14}}$

$\tt{2\times 22 \times 2 }$

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