Answer:
I think it's right answer is 530
Equation 1. N+D=500
equation 2 5N+10D=3000
This is for equation 1
N=500-d
Substitute into equations 2 and solve for D
5N+10D=3000
5(500-D)+10D=3000
2500-5D+10D=3000
5D=500
D=100
Lets go back the equation 1
N=500-D
N=500-100
N=400
there are 400 Nickles and 100 Dimes
Answer:
48 :)
Step-by-step explanation:
120 divided by 10 = 12
12 x 4 = 48
Answer:
1st - 84. 2nd - Try doing this by yourself first and If you cant get it I'll help you.
Step-by-step explanation:
To find the area of a rectangle multiply its height by its width. For a square you only need to find the length of one of the sides (as each side is the same length) and then multiply this by itself to find the area.
Answer:
x = 7.5
Step-by-step explanation:
