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3 years ago

Noah earned v dollars over the summer. Mai earned m dollars, which is 45 dollars more than Noah did.

Mathematics

2 answers:

12345 [234]3 years ago

8 0

Answer:

What is the question?

Step-by-step explanation:

AysviL [449]3 years ago

6 0

Answer:

v=m-45

Step-by-step explanation:

The question is:Noah earned v dollars over the summer. Mai earned m dollars, which is 45 dollars more than Noah did. What's the answer? Same as on the real test just different. Hope this is helpful...

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The ratio of boys to total players in league soccer is 3:5. How many are there if there are 45 boys?

gladu [14]

Answer:

Step-by-step explanation:

since 3 * 15 = 45, we know that we have to multiply 5 by 15. so the ratio would be 45:75. I hope this helps!

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Add or subtract as indicated. reduce to the lowest term. 1 1/3 + 2 1/3

Ann [662]

2 1/3 = 7/3

Both numbers should be improper fractions.

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Answer the question in the picture

nekit [7.7K]

Recall the angle sum identities:

$\sin(x+y)=\sin x\cos y+\cos x\sin y$

$\cos(x+y)=\cos x\cos y-\sin x\sin y$

Now,

$\tan(x+y)=\dfrac{\sin(x+y)}{\cos(x+y)}=\dfrac{\sin x\cos y+\cos x\sin y}{\cos x\cos y-\sin x\sin y}$

Divide through numerator and denominator by $\cos x\cos y$ to get

$\tan(x+y)=\dfrac{\tan x+\tan y}{1-\tan x\tan y}$

Next, we use the fact that $x,y$ lie in the first quadrant to determine that

$\sin x=\dfrac12\implies\cos x=\sqrt{1-\sin^2x}=\dfrac{\sqrt3}2$

$\cos y=\dfrac{\sqrt2}2\implies\sin x=\sqrt{1-\cos^2x}=\dfrac1{\sqrt2}$

So we then have

$\tan x=\dfrac{\sin x}{\cos x}=\dfrac{\frac12}{\frac{\sqrt3}2}=\dfrac1{\sqrt3}$

$\tan y=\dfrac{\sin y}{\cos y}=\dfrac{\frac1{\sqrt2}}{\frac{\sqrt2}2}=1$

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Answer:

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.12 is equal to 12/100

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