Answer:
See explanations below
Step-by-step explanation:
Let the amount of nickel be x
Let the amount of pennies be y
Let the amount of quarters be z
If the the total value of the coins is 3.88, then;
x+y+z = 3.88 .... 1
If Anita has 4 more nickels than pennies, then;
x = y + 4 ... 2
If she has 2 more than 4 times the number of quarters than pennies, then;
y = 2 + 4z
4z = y-2
z = (y-2)/4 ...3
Substitute 2 and 3 into 1
y+4+y+(y-2)/4 = 3.88
4y+16+4y + y-2 = 15.52
9y + 14 = 15.52
9y = 15.52 - 14
9y = 1.52
y = 1.52/9
y = 0.17
Since x = y + 4
x = 0.17+4
x = 4.17
z = y-2/4
z = 0.17-2/4
z = -1.83/4
z = - 0.46
Answer:
Step-by-step explanation:
We want to get x alone so we need to get rid of the 7 in front of it.
7x=-27
Divide each side by 7
x= -27/7
This can't be simplified anymore so this is your answer.
The answer would be 8.975 because 39 divided by 40 is 0.975.
Hello there!
1/3 (9 - 6x) = x
Start by using the distributive form
(1/3)(9) + (1/3)(-6x) = x
9/3 + (-6x)/3 = x
3 - 2x = x
-2x + 3 = x
-2x - x + 3 = 0
-3x + 3 = 0
-3x = 0 - 3
-3x = -3
x = -3/-3
x= 1
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