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Dafna1 [17]
3 years ago
15

Kelly went to a store to purchase a coffee pot. She will use a coupon for 20% off. She can calculate the cost before sales tax u

sing the follow expression, c represents the original cost of the coffee pot. C- 0.2c
Which other expression could kelly use to calculate her cost before sales tax?
A. 0.8c
B. 1.2c
C. 1.8c
D. 80c
Mathematics
1 answer:
alexgriva [62]3 years ago
7 0

Answer:b

Step-by-step explanation:

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Solve the unknown viable<br><br> 7c/12 + 5c/16=15/48 +c
Mashutka [201]
<span>deconstructing
48 : 2 = 24
24 : 2 = 12
12 :2 = 6
6 : 2 = 3
3 : 3 = 1
2 * 2 * 2 * 2 * 3 = 48 
...................................
16 : 2 = 8
8 : 2 = 4
4 : 2 = 2
2 : 2 = 1
2 * 2* 2 * 2 = 16
..................................
12 : 2 = 6</span>\frac{7c}{12}  +  \frac{5c}{16}  =  \frac{15}{48}  + c \\  \\  \frac{7c*4}{12*4}  +  \frac{5c*3}{16*3}  -  \frac{15}{48}  = c \\  \\  \frac{28c + 15c}{48}  -  \frac{15}{48}  = c \\  \\ 48c =  43c - 15 \\  \\ 48c - 43c = -15 \\  \\ 5c =- 15 \\  \\ c =  -3&#10;<span>
6 : 2 = 3
3 : 3 = 1
</span><span>common denominator 48</span>
5 0
3 years ago
on our way to visit her parents Jennifer Drive 265 miles in 5 hours what is the average rate of speed in miles per hou
Setler79 [48]
The average speed would be 53 miles per hour, hope this helped, if you need me to explain then here is the way, so all you do is divide 265 by 5 and what I did to help make it faster was split 265 into 250 and 15 so 250 divided by 5 is 50 and 15 divided by 5 is 3 so 50 + 3 = 53!
6 0
3 years ago
In the expression , 5.28 x 10^3 , which number is the base ?
solong [7]
Bse is 10
x^m, x is base of exponent
7 0
3 years ago
What times 3 equals 3/10
Mumz [18]

Answer:

1/10

Step-by-step explanation:

Divide 3/10 by 3. Remember to "keep, flip, change".

3/10 ÷ 3/1

3/10 × 1/3

Multiply across: 3/10 × 1/3 = 3/30

Simplify: 3/30 = 1/10

7 0
3 years ago
A
Gre4nikov [31]

Answer:

3,25-2,5=0,75 it is equal to 3/4 so D

7 0
2 years ago
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