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viva [34]
3 years ago
9

A hummingbird can beat its wings 4,200 times in a minute in normal flight. Write an equation that can be used to find the number

of times, b, the hummingbird beats its wings in an hour, and then solve the equation.
Mathematics
1 answer:
vodka [1.7K]3 years ago
7 0

We have been given that a hummingbird can beat its wings 4,200 times in a minute. We need to find the equation that represents the number of times the hummingbird beats its wings in an hour.

We know that there are 60 minutes in an hour.

Hence, in an hour, the  hummingbird can beat 60\times 4200 times its wings.

Therefore, the required equation is given by

b=60\times 4200
\\
\text{When solving the equation, we get}\\
b=252000


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The measure of the third angle is 45° more than half the second, so we can represent the third angle by (45+(s/2)).

The sum of these angles is 180°, so we can represent the sum as

... (s-15) + s + (45+s/2) = 180

Collecting terms, we have

... 2.5s +30 = 180

... 2.5s = 150 . . . . . . subtract 30

... s = 150/2.5 = 60 . . . . divide by the coefficient of s

The first angle is 60-15 = 45.

The second angle is 60.

The third angle is 45+60/2 = 75.

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<u>Check</u>

The sum of the three angles is 45 +60 +75 = 180.

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Step-by-step explanation:

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Answer:

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