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matrenka [14]
3 years ago
9

30+9÷3-[5 x 3-{5-(7-4)}]

Mathematics
1 answer:
8090 [49]3 years ago
8 0

the exact answer is 20..

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I only need the answer to c
Alik [6]

Answer:

If we were interested in how the gas prices had changed between 2002 and 2009, we could compute that the cost per gallon had increased from $1.47 to $2.14, an increase of $0.67. While this is interesting, it might be more useful to look at how much the price changed per year. You are probably noticing that the price didn’t change the same amount each year, so we would be finding the average rate of change over a specified amount of time.

The gas price increased by $0.67 from 2002 to 2009, over 7 years, for an average of

$0.677yearsapprox0.096

dollars per year. On average, the price of gas increased by about 9.6 cents each year.

hope it helps

7 0
3 years ago
A book costs $3. Mr. Grayson spent $81 on books. The number of books, b, can be found by solving the equation 3b = 81. Which is
Andre45 [30]

Answer:

Using division equality property to solve for b. b=27

Step-by-step explanation:

A book cost $3

Mr. Grayson spent $81 on books

Let number of books be b

Total cost invest on book = 3b

This would be equal to $81

Therefore, 3b=81

Now we solve for b

Using division method of equality

If we divide both side by same number in equality.After division we get both are equal .

3b=81

Here we divide by 3 both sides

3b÷3=81÷3

b=27

Thus, Using division equality property to solve for b. b=27


7 0
3 years ago
Read 2 more answers
Answers this for me plzzz really quickly
Anna [14]

I think you have the right answer  she paid $55 dollars for each chair

3 0
3 years ago
Read 2 more answers
The ______ property: multiplying like bases​
Zigmanuir [339]

Answer:

The <u>d</u><u>i</u><u>s</u><u>t</u><u>r</u><u>i</u><u>b</u><u>u</u><u>t</u><u>i</u><u>v</u><u>e</u> property: multiplying like bases.

5 0
3 years ago
Do not answer until you see an image.
mezya [45]
From least to greatest is -0.52, 1/5, 5/16, 3/4, 0.90.
3 0
3 years ago
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