Answer:
x = 0 and x= 3
Step-by-step explanation:
2x ² = x² + 3x
so
2x² - x² - 3x =0
x²- 3x = 0
x ( x - 3 ) = 0
x = 0
x = 3
Answer:
always true
Step-by-step explanation:
5.50=0.10d+0.05n
70=d+n
how to solve-
n=70-d
5.50=0.10d+0.05(70-d)
5.50 = 0.10d +3.5 -0.05d
5.50= 0.05d+3.5
2=0.05d
d=40
70=d+n
70=40+n
n=30
there are 40 dimes and 30 nickels
