N=8+d
10d+5n=145
divide 2nd equaiton by 5 to make nicer and easier
2d+n=29
subsitute 8+d for n in 2nd equation
2d+8+d=29
3d+8=29
minus 8 both sides
3d=21
divide by 3
d=7
sub back
n=8+d
n=8+7
n=15
15 nickles and 7 dimes
Answer:
Step-by-step explanation:
It should be A.
i know this because a proportion line is a straight line that travels through the origin.
Okat the answrs for numbers 3 to 10 are
3. 1 3/5 4. 2 1/2 5. 3 6. 3 3/4 7. 2 3/4 8. 2 1/3 9. 3 1/3 and 10. 1 4/5
hope thses answers were helpful
