3 years ago

Please help!!

Mathematics

1 answer:

hodyreva [135]3 years ago

5 0

its actually B. and E.

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In a vending machine, there were 27 coins, all dimes and quarters. The total value of the money was $5.10.

amm1812

Answer:

11 dimes and 16 quarters

Step-by-step explanation:

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3 years ago

Milo has 2 hours of free time. He spends 2/4 of an hour with his dog. He spends 3/4 of an hour drawing. What fraction of an hour

blagie [28]

Answer: 3/4 of an hour left.

Step-by-step explanation:

Step 1: 2 hours = 4/4 +4/4

Step 2: 4/4 - 2/4 = 2/4

Step 3: 4/4 - 3/4 = 1/4

Step 4: 2/4 + 1/4= 3/4

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3 years ago

What are the values of sin α and tan α, if:<br> cosα=0.6

olganol [36]

Positive cosine is first or fourth quadrant. So we don't know the sign of the sine or the tangent.

Everybody's favorite right triangle is 3/4/5 and here we have

$\left(\dfrac 3 5 \right)^2 + \left(\dfrac 4 5 \right)^2 = 1$

So if

$\cos \alpha = 0.6 = \dfrac 3 5$

then

$\sin \alpha = \pm \dfrac{4}{5} = \pm 0.8$

and

$\tan \alpha = \dfrac{\sin \alpha}{\cos \alpha} = \dfrac{\pm 0.8}{0.6}=\pm \dfrac 4 3$

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3 years ago

Solve for z:<br> −0.25z=−1.25<br><br> z=?

lakkis [162]

$- 0.25z = - 1.25 \\ \Leftrightarrow \: z = \frac{ - 1.25}{ - 0.25} = \frac{ - \frac{5}{4} }{ - \frac{1}{4} } = 5$

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3 years ago

I'm confused how you split the fraction

slava [35]

1/3 + 1/3 + 1/3 + 1/3 + 1/3 + 1/3 = 6/3

8 0

3 years ago

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