Cheryl has a equal numbers of nickels and dimes The value of the coin altogether is 1.65 .How many dimes does Cheryl have

1 answer:

5 0

Cheryl has 16 dimes. Which will be 1.60, so she also has one nickel. Hope this helps!

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dem82 [27]

Tha last one PR=XY is not true.

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Ainat [17]

Recall the double angle identity for cosine:

$\cos(2x) = \cos^2(x) - \sin^2(x) = 1 - 2 \sin^2(x)$

It follows that

$\sin^2(x) = \dfrac{1 - \cos(2x)}2 \implies \sin(x) = \pm \sqrt{\dfrac{1-\cos(2x)}2} \implies \csc(x) = \pm \sqrt{\dfrac2{1-\cos(2x)}}$

Since 0° < 22° < 90°, we know that sin(22°) must be positive, so csc(22°) is also positive. Let x = 22°; then the closest answer would be C,

$\csc(22^\circ) = \sqrt{\dfrac2{1-\cos(44^\circ)}} = \sqrt{\dfrac2{1-\frac5{13}}} = \dfrac{\sqrt{13}}2$

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2 years ago

s344n2d4d5 [400]

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3 years ago

Semmy [17]

True....Independent = Test....therefore they are testing the current

7 0

2 years ago

MAVERICK [17]

Answer:

16/21 dresses

Step-by-step explanation:

3/4 · k hours: 4/7 · k dresses for any constant k

If we want 1 hour, then k will need to be 4/3

4/3 × 4/3 hours: 4/7 × 4/3

1 hour = 16/21 dresses

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3 years ago