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Yuliya22 [10]
3 years ago
11

What is a good website to get answer to a CA on a computer

Mathematics
1 answer:
mojhsa [17]3 years ago
8 0
Is CA stand for Common Assessment?<span />
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Every evening Jenna emptied her pocket and put your change in a jar at the end of the week she counts her money one week she had
Lelu [443]

Answer:

Jenna had 25 quarters and 15 dimes.

Step-by-step explanation:

Let Q = the number of quarters and D = the number of dimes.

Then:

1) Q+D = 40 "One week she had 40 coins, all of them dimes and quarters...."

2) 0.25Q+0.1D = $7.75 "...she had a total of $7.75."

Rewrite equation 1) as: D = 40-Q and substitute into equation 2).

2a) 0.25Q+0.1(40-Q) = 7.75 Simplify the left side.

 

2b) 0.25Q+4-0.1Q = $7.75 Subtract 4 from both sides.

2c) 0.25Q-0.1Q = 3.75 Combine the like-terms on the left side.

2d) 0.15Q = 7.75 Divide both sides by 0.15

2e) Q = 25 and:

D = 40-Q

D = 40-25

D = 15

Jenna had 25 quarters and 15 dimes.

3 0
3 years ago
Use the X method to find the solutions of<br><br> 6x2 + 2x – 20 = 0.
Keith_Richards [23]

Answer:Hopes this helps!

6x²+2x-20=0

==>6x²+12x-10x-20=0

==>6x(x+2)-10(x+2)=0

==>(x+2)(6x-10)=0

==>x=-2 or x=5/3

5 0
3 years ago
Read 2 more answers
The area of the rectangle<br> shown is 54 square units.<br> What is its perimeter
Ipatiy [6.2K]

Answer:

perimeter of a square= 4 times square root of area

4 \sqrt{54}  = 29.39

6 0
3 years ago
If AC = 10 and CG = 21, find AG.
stellarik [79]
The answers 59 because 90 degrees is the angle so 21 plus 10 equals 31 and 90-31 equals 59
8 0
3 years ago
A pair of $72 sneakers is marked with a sign $20 OFF or 20% OFF: The $20 of final price is​
Dafna1 [17]

Answer:

52

Step-by-step explanation:

i did the test.

8 0
3 years ago
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