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bonufazy [111]
3 years ago
9

Please HELP!!

Mathematics
1 answer:
tensa zangetsu [6.8K]3 years ago
5 0

Answer:

66.5%

Step-by-step explanation:

The average of 63% and 70% is

(63%+70%)/2=66.5%

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Help me with #5 pleaseeeeeeeeeee
earnstyle [38]

Answer:

\angle 1 = 45 degrees

Step-by-step explanation:

Sum of 3 angles in a triangle is 180..

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60

7x + 12

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So we sum to 180 and write:

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14x + \angle 1=171\\\angle 1 = 171 - 14x

We substitute this expression for Angle 1 into 1st equation we got and solve for x first,

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Since x = 9, the angle "14x + 9" would be:

14(9) + 9 = 135

Hence Angle 1 would be:

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Step-by-step explanation:

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