Step-by-step explanation: When you have a set of parentheses in an order of operations problem, you must simplify what's inside that set of parentheses first before you do anything else.

So our first step here is to subtract 6 - 8 which gives us -2.

So in our next step we have 3 (-2)² + 8 ÷ 2.

Now remember to do exponents before you multiply.

So (-2)² is just -2 × -2 or 4.

So in our next step we have 3 x 4 + 8 ÷ 2.

Now, we multiply so we have 3 x 4 which is 12.

So we have 12 + 8 ÷ 2.

Now we can divide.

8 ÷ 2 is 4 so we have 12 + 4 or 16.

So the answer to this problem is 16.

5 0

3 years ago

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Solve the proportion x/6=15/20

Rus_ich [418]

Change 15/20 to 3/4
Now we have $\frac{x}{6} = \frac{3}{4}$
multiply 6 to 3= 18 ÷ 4 = 4.5
x = 4.5

6 0

3 years ago

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Like the land bridge people, what factors might have pulled the Solutreans into North America?

Illusion [34]

Answer:

mayne because of grasses and animals

4 0

2 years ago

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Divide (8.6 x 108) by (3.2 x 103). Express your answer in scientific notation.

pav-90 [236]

In doing this division, we will first divide the 8.6 by the 3.2 to get 2.6875. Thankfully, that number is already in scientific notation so we don't have to worry about changing it. Now for the rest of the problem. When the bases are the same, and they are both 10's, you subtract the exponents. $10^{8-3}$ gives us 10^5. The answer then in scientific notation is $2.6875*10^5$ .

6 0

3 years ago