The cube root of -27 is -3
3√-27 = -3
You can check this by plugging your answer back it
X= -3
-3^3 = -27
Answer:
D. 1 4 × 1 3 E. 4 12 × 3 6
Step-by-step explanation:
D. 1 4 × 1 3 E. 4 12 × 3 6
We know that
speed=distance/time
distance=speed*time
in this problem
speed1=14 miles/hour
speed2=20 miles/hour
average speed=[14+20]/2-----> 17 miles/hour
time=3 2/5 hour-----> (3*5+2)/5----> 17/5 hours
distance=17*(17/5)----> 57.8 miles
the answer is
57.8 miles
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)
Your answer would be 2781.
Hope I helped and if you need more you could always ask me and I will get back as soon as I can :)
-Dawn
