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belka [17]
2 years ago
7

HELP

Mathematics
1 answer:
Aleks [24]2 years ago
3 0

Answer:

c) 6

Step-by-step explanation:

This is a straight-forward application of the Law of Cosines:

... a² = b² + c² -2bc·cos(A)

... a² = 8² +11² -2·8·11·cos(32.2°) ≈ 64 +121 -176·0.8462

... a² ≈ 36.07000

... a ≈ 6.00583

The best choice is c) 6.

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Work out the interior angle of the octagon.<br> Please show the working out.
bija089 [108]

Answer:

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Step-by-step explanation:

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1080° ÷ number of sides

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5 0
2 years ago
Read 2 more answers
Josh has been running for 6 min and completes a lap in 7 min. Gabe has been running for 2 min and completes a lap in 9 min.
Amanda [17]
So j completed 6/7 of a lap
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so
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then 6+j
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so
when will the times be equal
7j+6=9g+2
subtract 2 from both sides
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divide both sides by 9
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so to get a whole number of laps, we must subsitute a number when it is multiplied by 7 then add 4, we get a multiplue of 9
so if j=2
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so josh and gabe must run 2 lap each because
6+(2 times 7)=2+(9 times 2)
6+14=2+18
20=20
true so

the answer is 2 laps
3 0
3 years ago
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lara31 [8.8K]

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6 0
2 years ago
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