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alisha [4.7K]
3 years ago
10

I need to know the answer for 19,20,21

Mathematics
1 answer:
pantera1 [17]3 years ago
7 0
19. $30,681.82
20. Find surface area for this one
21. Use geometry
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What is 7 1/12 - 2 3/4 in simplest form
stich3 [128]

7 1/12  -  2 3/4

First we have to change mixed numbers to improper fractions

7 1/12  =  7 x 12 + 1 = 85   85/12

2 3/4  =  2 x 4 + 3 =  11     11/4

 85/12 - 11/4

Now we need to find the LCD (least common denominator) for 4 and 12

4, 8, 12

12

12 is our LCD, so it becomes our new denominator

85/12 would stay the same because the denominator wasn't changed but for 11/4 our new denominator is 12, so our fraction will change.

11/4  =  33/12 

4 goes into 12, 3 times. What you do to the bottom, you do to the top.

3 x 11 = 33

3 x 4 = 12

So, our new fraction is 33/12.  Now we subtract

85/12  -  33/12  =  52/12

Now we convert back to a mixed number

52 ÷ 12 = 4 4/12 reduce

4 1/3

Hope this helps.


6 0
3 years ago
Blaine's company made $ 6 × 103 last year. William's company made 1.2 × 105 times Blaine's company. How much money did William's
Diano4ka-milaya [45]
Blaine's Company: 103 x 6 = 618
William's Company: 1.2 x 105 = 126 
Since William's Company made 126 x Blaine's company's 
126 x 618 = 77868.00
(I am not sure if I did this right I tried though) 
7 0
3 years ago
the expression 12g gives the number of kilometers a car can travel using g liters of gasoline how far can this car travel on 5 1
dmitriy555 [2]
The answer is 66 kilometers.

Start with the given expression: 12g where 'g' standts for the liters of gasoline.

Input your data and solve: 12 * 5.5 = 66
3 0
3 years ago
Simplify<br><img src="https://tex.z-dn.net/?f=%20%7B%28%20-%201%29%7D%5E%7B10%7D%20" id="TexFormula1" title=" {( - 1)}^{10} " al
tensa zangetsu [6.8K]
The answer is one, because 1 is a absolute value so 1 x 10 is 10
4 0
3 years ago
Help number 16 sos please
natta225 [31]
The answer is 0.4722. I hope this helps :)
5 0
3 years ago
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