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Andrews [41]
3 years ago
6

[(21 + 5) ÷ 2] + 7 • (8 - 3) equals

Mathematics
1 answer:
kow [346]3 years ago
6 0
[(21 + 5) ÷ 2] + 7 × (8 - 3)
[26 ÷ 2] + 7 × (8 - 3)
13 + 7 × (8 - 3)
13 + 7 × 5
13 + 35
48
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In the diagram below PQR are point on the circle with centre o and diameter 14cm <PRQ=35° Find the length of the minor arc PQ
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Answer:

Step-by-step explanation:

I'll draw a quick sketch. It's hard to "see" this kinda of problem w/o a drawing , so start there.   just draw as much as you can from what the problem tells you.

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radius = 7 cm

pi = 3.142

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to find Y use law of sines

sin(70) / Y = sin(55) / 7

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sin(70) * 7 / sin(55) = Y   ( and invert and multiply the fraction in the denom )

8.03007 = Y

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if you have questions, and  you should, just put them in the comments , I'll see them later :)

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3 years ago
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