The rectangular prism has a volume of, 1/4 cubic meter.
Answer:
2
Step-by-step explanation:
Replace the number with x, then the equation would be:
7x-4=x+8
7x-x=8+4
6x=12
6x/6=12/6
x=2
Answer:
5 laps
Step-by-step explanation:
We can use ratios to solve
3 minutes 15 minutes
----------------- = ------------------------
1 lap x laps
Using cross products
3x = 15
Divide each side by 3
3x/3 = 15/3
x = 5
He can do 5 laps
Since this is a system of equations, substitute the value of x into the other equation.
2(3y)+2y=24
6y+2y=24
8y=24
y=3
x=3(3)
x=9
To check my work, substitute my x and y values:
2(9)+2(3)=24
18+6=24
24=24
Your answer is (3,9)
Hope this helps! Have a wonderful day :)
Multiply 4.50 by 0.07
4.50*0.07 = 0.315
Then the sales tax is about $0.32.
You can also do it mentally. Moving the decimal point in 4.50 once to the left gives you 10% of the original amount, 0.45. Move it again to get 1% of the price, 0.045. Then multiply this by 7 to get 7%.
