MAY SOMEONE HELP PLZ!

Mathematics

2 answers:

JulijaS [17]2 years ago

6 0

Answer:

First pic

$ratio = \frac{62.8}{2 0} \\ = 3.14$

Second pic

$< c + 2x + (3x + 10) = 180 \\ < c = 180 - 3x - 10 - 2x \\ < c = 170 - 5x$

Kruka [31]2 years ago

3 0

Answer:

Step-by-step explanation:

<u>Circumference equation:</u>

C = πd

<u>Circumference to diameter ratio is:</u>

C/d = π = 3.14
Same result comes from the table

Correct choice is B

<u>Sum of angles of a triangle is 180°</u>

m∠A + m∠B + m∠C = 180°

<u>A and C are equal angles as opposite sides are congruent.</u>

2(3x + 10) + 2x = 180
6x + 20 + 2x = 180
8x = 160
x = 20

m∠C = 3*20 + 10 = 70°

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