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3 years ago

Simplify the expression. (0.4x10^-6)(0.7x10^-2)

Mathematics

1 answer:

harina [27]3 years ago

5 0

Answer:

2.8 · 10^(-9)

Step-by-step explanation:

I'd suggest you do this problem through two separate multiplications:

First, 0.4·0.7 = 0.28, or 2.8 · 10^(-1)

Second, 10^(-6) · 10^(-2) = 10^(-8), and so the final result is

2.8 · 10^(-1) · 10(-8) = 2.8 · 10^(-9)

Please note: negative exponents (such as -9, above) should be enclosed in parentheses for added clarity.

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Answer:

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2 years ago

If the lengths of two sides of a triangle are 6 and 7, the length of the third side may be

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Answer:

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Step-by-step explanation:

Let the missing side is x.

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2 years ago

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3 years ago

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2 years ago

Given the triangle below, which of the following is a correct statement? Right triangle ABC with AB measuring 5, AC measuring 6,

Elanso [62]

Drawing a diagram to match this figure, BC would have to be the hypotenuse as it is the longest side of the triangle. Angle A would have to be the right angle.
For the first choice, $\cot B = \frac{1}{ \tan B} 
\\ = \frac {1}{\frac {6}{5}}
\\ = 1 \div \frac{6}{5} = \frac{1}{1} \div \frac{6}{5}
\\ = \frac{1}{1} * \frac{5}{6} = \frac{5}{6}$ . The first choice is not correct.
The second choice gives us $\csc C= \frac{1}{ \sin C}= \frac{1}{\frac {5}{8}}
\\ = 1 \div \frac{5}{8} = \frac{1}{1} \div \frac{5}{8}
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The third choice gives us

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3 years ago