70 ft^
8 2/5 = 42/5 16 2/3 = 50/3
42/5 * 50/3 =2,100/15 = 140
140/2=70
Answer:
I suck a math also
Step-by-step explanation:
yeah
If x represents the mass of 1 ball in kg, then the balance shows ...
... 6x = x + 9 kg
... 5x = 9 kg
Then 6x is ...
... (6/5)·5x = (6/5)·9 kg = 10.8 kg
0.8 kg = 0.8·1000 g = 800 g
so 10.8 kg is ...
... D. 10 kg 800 g
Answer:
x = 1 and y = 9
Step-by-step explanation:
y=6x+3
8x+1=6x+3
8x+1+−6x= 6x+3+−6x(Add -6x to both sides)
2x+1=3
2x+1+−1=3+−1(Add -1 to both sides)
2x=2
2x
2
=
2
2
(Divide both sides by 2)
x=1
Step: Substitute 1 for x in y=8x+1:
y=8x+1
y=(8)(1)+1
y=9(Simplify both sides of the equation)
