Answer:
90°&89°=neither
63°&47°=neither also
61°&29°=complementary angles
Step-by-step explanation:
90+89=179, neither 180 or 90
63+47=110, neither 180 or 90
61+29=90 which is what complementay angles equal.
i hope this helps you out.
the water will rise 10 in each hour after 4 hours the water will be 40 in deep and it will take 8 hours for the water to reach a depth of 80 in
22 is 10 of 220
hope it help
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7.2+x=19.5
x=19.5-7.2
x=12.2