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snow_lady [41]
3 years ago
8

Can anyone help me with this problem and tell me how to solve it?

Mathematics
1 answer:
Savatey [412]3 years ago
5 0
You add 0.65 to 80 and the answer is 80.65
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(-x+3)-(x-5) please show work​
Lina20 [59]

simplify each term

apply the distributive property

-X+3+(-X- -5)

multiple -1 by -5

-X+3+(-x+5)

remove unnecessary parentheses

-x+3-×+5

subtract x from -x

-2x+3+5

add 3 and 5.

-2x+8

5 0
3 years ago
Find each percent decrease. Round to the nearest percent.
Vsevolod [243]

Answer:

67%

Step-by-step explanation:

First of all, we must find the decrease;

39 - 13

=26

Then we can find the percentage decrease

26/13 ×100 =66.666..which can be written as 67.

5 0
3 years ago
In 1980, the average cost of a pack of cigarettes was $0.88. In 2000, the average cost was $5.31 per pack.
yan [13]

Answer:

The average rate of change of the cost of a pack is 22 cents per year.

Another name for the average <em>rate of change</em> is <em>slope</em>.

Step-by-step explanation:

The average rate of change of the cost of a pack (r), in monetary units per year, is equal to the change in the average cost of a pack (\Delta c), in monetary units, divided by the change in time (\Delta t), in years. Then, the average rate of change is:

r = \frac{\$\,5.31-\$\,0.88}{2000-1980}

r = \$\,0.22\,\frac{1}{yr}

The average rate of change of the cost of a pack is 22 cents per year.

Another name for the average <em>rate of change</em> is <em>slope</em>.

8 0
3 years ago
Can someone please answer all of the questions?
In-s [12.5K]
6F 7T 8F 9F there :D
7 0
3 years ago
Read 2 more answers
Which proportion is a representation of “The number x is 25% of 70”? A. 25/100=70/x B. x/100=25/70 C. x/60=60/100 D. 25/100=x/70
ankoles [38]

Answer:

a.

Step-by-step explanation:

I just got done learning this

8 0
3 years ago
Read 2 more answers
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