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Norma-Jean [14]

3 years ago

5

Expand 2(x-1) Expand 3(2x+3) Expand 7(x+5) Expand 5(2x-y)

1 answer:

Agata [3.3K]3 years ago

7 0

Those are the answers
2x-2
6x+9
7x+35
10x-5y

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The scale of a map is 1 cm: 77 km.

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3 years ago

Which is the solution to (8.5 x 103)(2 x 105) expressed in scientific notation?

kenny6666 [7]

We have been given an expression $(8.5\times 10^3)(2\times 10^5)$ . We are asked to find the solution to our given expression expressed as scientific notation.

Let us simplify our given expression.

Using exponent property $a^m\cdot a^n=a^{m+n}$ , we will get:

$8.5\times 2\times 10^3\times 10^5$

$17\times 10^{3+5}$

$17\times 10^{8}$

Now to write our answer in scientific notation, we need our 1st multiple between 1 and 10. So we will rewrite our expression as:

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$1.7\times 10^{1+8}$

$1.7\times 10^{9}$

Therefore, our required solution would be $1.7\times 10^{9}$ .

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