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2 years ago

I need help with this question.

Mathematics

1 answer:

ivann1987 [24]2 years ago

4 0

9514 1404 393

Answer:

a8 = 4

Step-by-step explanation:

Put 8 where n is and do the arithmetic.

a8 = (1/2)(8) = 8/2 = 4

The 8th term of this arithmetic sequence is 4.

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427,266 to the nearest ten thousand

GaryK [48]

Answer:

430,000

Step-by-step explanation:

Since the thousandths place is more than 4 you can round up the ten thousands

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2 years ago

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If angle a measures 64 then what does angle b measure?

Naddik [55]

Answer:

b = 26°

Step-by-step explanation:

a ; b = complementary =>

a + b = 90° } => b = 90° - 64° = 26°

a = 64°

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3 years ago

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3 years ago

The correct scientific notation for the number 500.0 is

marishachu [46]

Answer:

The correct scientific notation for the number 500.0 is $500=5.0\times10^2$

Step-by-step explanation:

While writing a large number in scientific notation we do below mentioned two things.

We take any number between 1 and 10
Then we multiply this number with an exponent of 10.

Hence, any number in scientific notation is in the form $a\times10^b$

Here a is any number between 1 and 10.

b is exponent of 10.

Now, writing 500 in scientific notation, we take a = 5

Hence, we have to take b = 2, since 5 multiplied by 100 equas 500.

Thus, we have

$500=5.0\times10^2$

5 0

3 years ago

(-4^-2) (49^-1/2)<br><br> Evaluate the expression

Marizza181 [45]

Answer:

-1/112

Step-by-step explanation:

$-4^{-2}=\frac{1}{-4^2}=-\frac{1}{16} \\ \\ 49^{-1/2}=\frac{1}{49^{1/2}}=\frac{1}{7} \\ \\ (-1/16)(1/7)=-1/112$

5 0

1 year ago