The greatest common factor of 2 and 4 is 2
w = 12
to solve this, you have to multiply both sides by 2 to cancel out the two on the left. you’ll be left with -7w = 84. then, you divide both sides by -7 to isolate the variable, which is w. you’ll end up with w=12.
the average =61 so that mean that he will donate 61$ so 61 is the right answer
hope this helps
Answer:
See below (I hope this helps!)
Step-by-step explanation:
Let's call the number of $8, $10 and $12 as x, y and z respectively. Then, we can write the following system:
x + y + z = 360 (1)
8x + 10y + 12z = 3500 (2)
x + y = 5z (3)
5z + z = 360 (Substitute (3) into (1))
6z = 360
z = 60
x + y = 5 * 60 (Substitute z = 60 into (3))
x + y = 300 (4)
8x + 10y + 12 * 60 = 3500 (Substitute z = 60 into (2))
8x + 10y = 2780 (5)
8x + 8y = 2400 (6) -- (Multiply (4) by 8)
2y = 380 (Subtract (6) from (5))
y = 190
x + 190 = 300 (Substitute y = 190 into (4))
x = 110
Answer:
y=4x
Step-by-step explanation:
Write the equation of linear function
Substitute:
Multiply the monomials:
Rearrange unknown terms to the left side of the equation:
Reduce the greatest common factor on both sides of the equation:
Rearrange unknown terms to the left side of the equation:
Divide both sides of the equation by the coefficient of variable:
Substitute one unknown quantity into the elimination:
Solve the equation: m=4
Write the solution set of the equations:
Substitute: y=4x
Answer: y=4x
