Answer:
8
Step-by-step explanation:
If j represents Jack's age, we have ...
2j +5 = 21
2j = 16 . . . . . . subtract 5
j = 8 . . . . . . . . divide by 2
Jack is 8 years old.
If the snowboarder descends 12000 feet hill in 3 minutes, then in one minute he'll descend 12000 / 3 = 4000 feet. So the mean change in elevation per minute is 4000 feet per minute.
Answer:
g(x)= x-30
Step-by-step explanation:
g(180)= 180-30= 150 gallons in 1 hour
g(150)= 150-30= 120 gallons in 2 hours
g(120)= 120-30= 90 gallons in 3 hours
g(90)= 90-30= 30 gallons in 4 hours
g(30)= 30-30= 0 gallons in 5 hours
Answer:
357.5cm³
Step-by-step explanation:
<em>To find the volume of the prism, find the area of the triangle and multiply it by the height</em>
<u>Area of the triangle</u>
- a = 1/2 × base × height (of the triangle)
- a = 1/2 × 22 × 5 = 55cm²
<u>Volume of prism</u>
Answer: 357.5cm³
Hope this helps!
Answer: 1/2*6*3=9
A=1/2*b*h
Hope it helps
