John is 78 1/2 years old and his sister is 73 1/2 years old
Answer:
None of them
Step-by-step explanation:
-16 y+13
16(−y+2) = -16 +32
−16(−y+13)
= 16y -208
−16(y+2) = -16y -32
16(−y+13)= -16y+208
Answer:
628.3 cm
Step-by-step explanation:
The window has a semicircle shape = half of a circle
Perimeter of the window = ½(πr²)
Radius (r) = 20 cm
Plug in the value
Perimeter of the window = ½(π*20²)
= ½(π*400)
Perimeter of the window = 628.31853 ≈ 628.3 cm (nearest tenth)
Answer:
396 miles / 22 gallons = 18 miles per gallon
468 miles / 18 miles = 26 gallons of gasoline
What I did is I took the number of miles and divided it by the number of gallons to find how many gallons of gasoline were used per mile. Then I took that number of miles and divided 468 by it because that's the number of gallons we are trying to find. We ended up with 26 gallons of gasoline for 468 miles.
