The best answer to this question is to subtract 4 from both sides. This isolates the square root and sets you up for squaring both sides of the equation.
Answer:
Natalie is 15
Fred is 24
Step-by-step explanation:
You would first create equations to represent the problem. You would then solve for a variable (I chose to solve for y). I subtracted each equation from each other which helped me isolate y, which equaled 15. I then substituted y for 15 which allowed me to isolate x, which gave me 24.
(the equations)
x + y = 39
x + 3y = 69
(solving for y)
x + 3y = 69 - x + y = 39
x-x +3y -y = 69 - 39
2y = 30
y = 15
(solving for x)
x + 15 = 39
x +15 -15 = 39 -15
x = 24
Answer:
-30
Start with multiplication 7x(-4) will equal -28 then add that to the -2 and you will get -30
Answer:
3.6 hours
Step-by-step explanation:
Blake can do work in hours = 9
Blake can do a part of work in 1 hour = 1/9
Ned can paint the same room in six hours.
Ned can do a part of work in 1 hour = 1/6
They can do a part of work together in 1 hour = 1/9 + 1/6
= 5/18
Now they can do 5/18 part of work in hour = 1
So, they can do whole work in hours = 1/(5/18)
= 3.6
Hence it will take 3.6 hours to paint the room if they work together.
Answer:False
Step-by-step explanation:
Failed vertical line test