Answer:
13 quarters, 26 nickels.
Step-by-step explanation:
n will be number of nickels, q will be number of quarters, and we have 39 total coins
so n + q = 39 (number of nickels + number of quarters = 39 coins.
The problem also says there are twice as many nickels as quarters. so we can call the number of nickels n or we can call it 2q (2 times the number of quarters)
which means
n + q = 39
2q + q = 39
3q = 39
q = 13
and she has 2 times as many nickels as quarters... 2 x 13 = 26 nickels
LMK if you have questions.
If you want to double check the money,
n(0.05) + q(0.25) = 4.55 is the equation to use.
26(0.05) + 13(0.25) = 1.3 + 3.25 = $4.55
Answer:
6m- 22
Step-by-step explanation:
For both kinds she needs:
4 1/4 + 3 1/8= 7 3/8
So for both kinds she needs 7 3/8 cups.
Answer:
One Soulution for both they are parallel and never meet
Step-by-step explanation:
Simplify brackets
6 - 3x - 10 + 4(2 - x) = 15
Simplify 6 - 3x - 10 + 2(2 - x) to -4 - 3x + 4(2 - x)
-4 - 3x 4(2 - x) = 15
Expand
-4 - 3x + 8 - 4x = 15
Simplify -4 - 3x + 8 - 4x - 7x
4 - 7x = 15
Subtract 4 from both sides
-7x = 15 - 4
Simplify 15 - 4 to 11
-7x = 11
Divide both sides by -7
