2 years ago

What is (7÷2+2×2×)×10

Mathematics

2 answers:

bulgar [2K]2 years ago

8 0

The answer is 75

I hope this helps.

Have a great day. :)

Anon25 [30]2 years ago

4 0

<span>(7 ÷ 2 + 2 × 2)10
PEMDAS
Parentheses -> Exponents -> Multiplication/Division -> Addition/Subtraction
Left to right
</span>7 ÷ 2 = 3.5
2 x 2 = 4
4 + 3.5 = 7.5
7.5 x 10 = 75

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Find the length of the darkened arc. Leave your answer in terms of pi.

jonny [76]

Answer:

$\frac{15 }{4} \pi \:$

Step-by-step explanation:

Radius of circle (r) = 18/2 = 9 ft

Central angle = 180° - 30° = 150°

$length \: of \: arc \\ = \frac{150 \degree}{360 \degree} \times 2\pi \: r \\ \\ = \frac{150 \degree}{360 \degree} \times 2 \times \pi \: \times 9\\ \\ = \frac{5 }{12 } \times 18 \times \pi \: \\ \\ = \frac{5 }{4} \times 3\times \pi \:\\ \\ = \frac{15 }{4} \pi \:$