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3 years ago

Which expressions are equivalent to 4^−2 ⋅7 ^-2?

Mathematics

1 answer:

Andrews [41]3 years ago

8 0

Answer:

We can have several equivalents.

It can be 1/784, 28^(-2), or 1/ (28^2)

Step-by-step explanation:

4^(-2) * 7^(-2) = (4*7)^(-2) = 28^(-2)

or 1 / (28^2) is another equivalent.

4^(-2) * 7^(-2) = 28^(-2)

4^(-2) * 7^(-2) = = 1/784

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2 years ago

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DaniilM [7]

Answer:

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2 years ago

Cassandra assigns values to some of the measures of triangle ABC. If angle A measures 30°, a = 6, and b = 18, which is true?

Anna [14]

Answer:

The triangle does not exist because sin(A)/a can not be equal to sin(B)/b

Step-by-step explanation:

we know that

step 1

Find the measure of angle B

Applying the law of sines

$\frac{sin(A)}{a}=\frac{sin(B)}{b}$

we have

$A=30\°$

$sin(30\°)=1/2$

$a=6\ units$

$b=18\ units$

substitute

$\frac{(1/2)}{6}=\frac{sin(B)}{18}$

$\frac{1}{12}=\frac{sin(B)}{18}$

$sin(B)=\frac{18}{12}$

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Remember that the value of sine can not be greater than 1

therefore

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2 years ago

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3 years ago

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yawa3891 [41]

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3 years ago

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