2 years ago

What is the answer to 3/8 x 8/9 ?

Mathematics

1 answer:

FromTheMoon [43]2 years ago

8 0

0.33333333333333333333333

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Answer:

Interpreting as: 10y+11=25-3y

Input:

10 y + 11 = 25 - 3 y

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2 years ago

If f(x) = 5x - 1 and g(x) = 2x^2 + 1 , what is the value of ( f x g )(-3) ?

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Sophia has $91,000 in a savings account that earns 7% annually. The interest is not compounded. To the nearest cent, how much wi

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Answer:

$95777.5

Step-by-step explanation:

change 7% to decimal = .07

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Tom’s weekly salary increased from $240 to $300. What was the percent change?

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(csc x - 1) (csc x + 1)

victus00 [196]

<h2>Explanation:</h2>

Here we have the following expression:

$(csc x - 1) (csc x + 1)$

So we need to extend this. Remember that the difference of squares tells us:

$(a-b)(a+b)=a^2-b^2$

So here:

$a=cscx \\ \\ b=1$

Thus:

$(csc x - 1) (csc x + 1)=csc^2x-1 \\ \\ \\ But: \\ \\ cscx=\frac{1}{sinx} \\ \\ \\ Then: \\ \\ csc^2x-1=\frac{1}{sin^2x}-1=\frac{1-sin^2x}{sin^2x}=\frac{cos^2x}{sin^2x}=cot^2x \\ \\ \\ Finally: \\ \\ \boxed{(csc x - 1) (csc x + 1)=cot^2x}$

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2 years ago