Half an hour= two quarters of an hour
Answer:
B
Step-by-step explanation:
Combine like term.
Hers 7x and (-5x) are like terms
7x + 4x² - 5x = 7x - 5x + 4x²
= 2x + 4x²
Complementary angles add up to 90°
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Ratio
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7 : 3
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Find total parts :
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Total parts = 7 + 3 = 10
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Find 10 parts :
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10 parts = 90
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Find 1 part :
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1 part = 90 ÷ 10 = 9
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Find 7 parts :
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7 parts = 9 x 7 = 63
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Find 3 parts :
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3 parts = 9 x 3 = 27
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Answer: The ratio of the two angles are 63:27
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Answer:
3/7 x 8/3 = 8/7 = 1 1/7
Step-by-step explanation:
3/7 × 8/3
<u>3</u><u> </u><u>x</u><u> </u><u>8</u>
7 x 3
= 24/21
<u>2</u><u>4</u><u> </u><u>÷</u><u> </u><u>3</u>
21 ÷ 3
=8/7
= 1 1/7
