Mrs. Simpson is frosting circular sugar cookies. Each cookie is 7 cm in diameter. How many square inches will she need to frost
1 answer:
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Answer:
<em>(1). </em><em> × </em>
<em> ; (2). 3 - 5x</em>
Step-by-step explanation:
1). [( - 5 )³ · ( - 5 )] ( ·
) =
×
=
×
=
×
2). - 25x² ÷ 5x + 15x ÷ 5x = <em>3 - 5x</em>
<u>Answer:</u>
$50 and $115
<u>Step-by-step explanation:</u>
We know that,
the sum of the two rates = $165 per hour
Let x and (165 - x) represent the $/hour of the 15hr and 5hr mechanics respectively.
Then combining their charges together to get:
Solving for x to get:
So the rate charged per hour by one mechanic is $50 and for the other mechanic = $115.