System of equations (yay) x=nickels y=dimes
1st x+y=70
2nd .5x+.10y=4.65
3rd Move decimal (multiply everything by 100) : 5x=10y=465
x+y=70
-x -x
y=70-x
(Substitute) 5x+10(70-x)= 465
(Distribute) 5x+700-10x=465
(Solve equation) -5x=-235 >>> x=47 >>>
Answer- 47 dimes and 23 nickels
Please let me know if I need to explain further (:
Answer:
-16
Step-by-step explanation:
-5 + 4 = -17 + 5 - 4
0 = -16
Answer: -16
30% = .3
120 x .3 = 40
120 + 40 = 160
Anna makes 160 dolls
Answer:

Step-by-step explanation:
<u>Given that,</u>
3 hours = 180 miles
Divide 3 to both sides
3/3 hour = 180/3 miles
1 hour = 60 miles
So, Mom drove 60 miles in one hour.
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