Five-eights(5/8)of 64is 40 because 5/8×64=40
Answer:
(-1)
Step-by-step explanation:
y = ?
Answer :
-4(y - 2) = 12
(-4 . y) - (-4 . 2) = 12
-4y - (-8) = 12
-4y + 8 = 12
-4y = 12 - 8
-4y = 4
y = -4/4
y = (-1)
Answer:
that's correct answer is yes
Step-by-step explanation:
yes
-- The left side wall and the right side wall are each (15 x 9) = 135 square ft.
-- The front wall and the back wall are each (12 x 9) = 108 square ft.
-- The total area of all 4 walls is (135 + 108 + 135 + 108) = 486 square ft.
-- You need 1 gallon of paint for every 425 square ft.
How many times will you need to cover 425 square ft ?
486 / 425 = 1.144 times
-- So you need 1.144 gallons in order to paint all 4 walls.
When rounded to the nearest 1/10th gallon, the number is <em>1.1 gallons</em>.
<em>That choice is not found</em> on the list of choices given with the question.
-- Even so, that figure of "1.1 gallons" is probably a little more than you
actually need in order to paint the 4 walls . . . That quantity of paint includes
enough to paint over the door, the windows, and all of the electrical outlets !
When we divide the number of feet (~700) by the number of seconds (~20), we get a number that is more than 30 (ft/s). Thus, only choices B and D are viable.
When we invert that rate, we get 1/(30 ft/s) = (1/30) s/ft, leaving the only viable choice as ...
B. 32.6 ft/s and approximately 0.03 s/ft
______
Units (feet, seconds) multiply and divide like any other variable. It is often useful to keep the units with the numbers of a problem so you can tell if you've done the math properly. It is more likely to be correct if the units are correct.
