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Shalnov [3]
2 years ago
7

Peggy had three times as many quarters and nickels. she had $1.60 in all. How many nickels and how many quarters did she have?

Mathematics
2 answers:
USPshnik [31]2 years ago
8 0
I say the answer is D
makvit [3.9K]2 years ago
3 0
If she has 3 times as many quarters as nickels, and nickels are represented by n, you would multiply n by three to get your answer, so your answer is 3n, or D.
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Answer:

Step-by-step explanation:

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3 years ago
find a positive angle less than one revolution around the unit circle that is co-terminal with the given angle -15pi/17
natta225 [31]
ANSWER
=\frac{19}{17} \pi

EXPLANATION

To find a positive angle that is coterminal with
-  \frac{15}{17}  \pi

We add multiples of 2π until we get a positive angle that is less than one revolution,


We add to obtain,


-  \frac{15}{17}  \pi + 2\pi


This simplifies to,

=  \frac{19}{17} \pi

This is the first positive angle that is coterminal with
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7 0
3 years ago
What is the focus of the parabola?<br><br> y=−14x2−2x−2
nataly862011 [7]
First, we need to transform the equation into its standard form (x - h)²=4p(y - k).
Using completing the square method:

y = -14x² - 2x - 2
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y = -14(x² + 2x/14 + (2/28)²) -2 + (2/28)²
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This is a vertical parabola and its focus <span>(h, k + p) is (-1/14, -391/196 + 1/56) = (-1/14, -775/392).

Or (-0.071,-1.977).</span>
3 0
2 years ago
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