Answer:
-24
Step-by-step explanation:
Easy way: 42 - 18 = 24, then translate it to negative 24 because your numbers are negative.
A little bit harder way: -42 + (-18) or -42 + 18 = -24
The answer would be three
Answer:
(800 x 9) + (10 x 9)
Step-by-step explanation:
Find out what 810 x 9 is:
810 x 9 = 7290
Then see which expression has the same answer. Personally I'd check all of them, but luckily the first expression is the correct one so you don't need to go through the rest (since it only asks for one correct expression):
(800 x 9) = 7200
(10 x 9) = 90
7200 + 90 = 7290
Answer:
2/3 gallons
Step-by-step explanation:
Given data
We have the following data
1/2 gallons is the same as 0.5 gallons
hence 0.5 gallons will cover 3/4 of his deck
x gallons will cover 1 of his deck
cross multiply we have
3/4*x = 0.5*1 gallons
3x/4= 0.5
3x= 2
divide both sides by 3
x= 2/3
Hence 2/3 gallons will cover the entire deck
Let the two numbers be x and y.
Given,
x + y = 7
x = 7 - y
Also given,
x - y = -1
7 - y - y = -1
-2y = -8
y = 4
x = 7 - y = 7 - 3 = 4
Hence, the numbers are 3 and 4.
