Label the 3 distinct sides of the box. I arbitrarily chose the letters a, b and c.
Use the info about areas as follows:
ab=54 in^2
ac=90 in^2
bc=60 in^2
Here you have 3 equations in 3 unknowns (a, b and c), which is enough info to use to determine a, b and c. Then the volume of the box is a*b*c.
Example: bc = 90, but c = 60/b. You could subst. 60/b for c in the 2nd and 3rd equation, which will eliminate c completely and leave you with 2 equations in 2 unknowns.
Continuing this procedure, I determined that a=9, b=6 and c=10. Thus, the volume of the box is V = 9*6*10 = 540 cubic inches (answer)
answer: n=7
work:
6n-14=3n+7
6n-14 (+14) = 3n+7 (+14) add 14 to both sides
6n=3n+21
6n(-3n)=3n(-3n)+21 subtract 3 from both sides
3n=21
3n/3= 21/3 divide by 3 on both sides
n=7
The Answer is A: 255.4 I took the test
The amount of hours worked is 8 hours all you do is set them equal to eachother
128/16=16T/16
then divide by 16 on both sides to find the T
Answer:
38 stamps of each
Step-by-step explanation:
0 .48 + 0.05 = 0.53
20.14 / 0.53 = 38
verification
0.48 x 38 = 18.24
0.05 x 38 = 1.9
18.24 + 1.9 = 20.14