-6 - 8
Answer:
-6-8= -14
Step-by-step explanation
negative eight plus negative 6 is negative 14.
An equation is a mathematical statement that is made up of twoexpressions connected by an equalsign
x + y = 110
y - (1/2)x = 20
The number of marblesonechildren had is 50.
The number of marblesotherchildren had is 60.
An equation is a mathematical statement that is made up of twoexpressions connected by an equalsign.
Example:
2x + 4y = 6 is an equation.
2x + 4 is an equation.
We have,
Totalnumber of marbles = 110
Number of children = 2
Number of marblesonechildren has initially = x
Number of marblesotherchildren has initially = y
Now,
x + y = 110 _____(1)
After one child had losthalf her marbles and the otherlost 20 they had an equalnumber.
This means,
x - (1/2)x = y - 20
(1/2)x = y - 20
y - (1/2)x = 20 _____(2)
From (1) and (2) we get,
x = 110 - y _____(3)
Putting (3) in (2)
y - (1/2)x = 20
y - (1/2)(110 - y) = 20
y - 55 + (1/2)y = 20
(3/2)y = 20 + 55
(3/2)y = 75
y = (75 x 2) / 3
y = 25 x 2
y = 50
Now,
Putting y = 50 in (3) we get,
x = 110 - y
x = 110 - 50
x = 60
Thus,
The number of marblesonechildren had is 50.
The number of marblesotherchildren had is 60.
Learn more about equations here:
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Answer: (1,1) (1,2))
Step-by-step explanation: Use desmos.com/calculator
Answer:
i hate math
Step-by-step explanation:
Answer:
The total cost of adding wallpaper to the room is $487.20
Step-by-step explanation:
Basically, how I got the answer is:
1. The shorter sides of the rectangle are 12 and the longer sides are 14.
2. The formula for a rectangle is A = l x w. The "l" means length and the "w" means width. 14 is the length and 12 is the width. So you should now have A = 14 x 12. If you multiply 14 by 12, you will get 168.
3. Since 1 square foot of carpet costs $2.90, then you should multiply by 168, which will give you $487.20 and that's pretty much it.
Hope this helps! :)
Answer:1 hr and 25 minutes
Step-by-step explanation:add 3:15 with 30 min to get 3:45 then add 4:50 with 30 minutes to get 5:20
Hopefully this helps ^_^ part c is longer then 6:30