Answer:
One solution
Step-by-step explanation:
4(x-5)=3+7
Combine like terms
4(x-5) = 10
Distribute
4x - 20 = 10
Add 20 to each side
4x-20 +20 = 10+20
4x = 30
Divide by 4
4x/ 4= 30/4
x = 40/4
x =15/2
1.) The answer is (B) No, because direct variation is written as y = kx, but the problem was not written that way.
2.) Answer: Yes; if you write x = ky, you will find that each x value given multiplied by a common k equals a corresponding y value.
3.) Answer: No; each x value does not multiply by a constant k to get the y values.
4.) Answer: Yes; each x value multiplies by 2.2 to get each corresponding y value.
5.) Answer: B; this is the only one that isn't or can't be written in y = kx form.
6.) Answer: Yes & -3; y + 3x = 0 can be written as y = -3x, which is a direct variation equation. The constant is just the -3.
7.5 gallons. (5x60)/40 5x60 being the equation to find the total miles driven
Answer:
I think this is it -6.4z -3.5xz
Step-by-step explanation:
