Sylvia is correct. This is because the sum of angles in a triangle is 180° and a triangle has 3 angles. If it had 2 right angles (90° each) it would already equal 180° and that's not possible because a thrid angle has to exist.
Hope I helped!
Answer:
99°
Step-by-step explanation:
∠7 and ∠8 are a linear pair, so are supplementary. Numbers are assumed to be degrees.
∠7 + ∠8 = 180
2x+15 + 3x = 180 . . . . . substitute given values
5x = 165 . . . . . . . . . . . . subtract 15, collect terms
x = 33 . . . . . . . . . . . . . . . divide by the coefficient of x
∠8 = 3x = 3·33 = 99 . . . . . degrees
Answer: [A]: 1.6 mi/h .
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(8/5) mi / h = (8<span> ÷ 5) mi / h = 1.6 mi / h ; which is Answer choice: [A].
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140 divided by 10 is 14. she had 14 coins
