4x-2 + 7x-18 + 6x+6 = 360 degrees
combine like terms
17x-14 = 360
add 14 to both sides
17x =374
divide both sides by 17
x = 374 / 17 = 22
JL = 7x-18
replace x with 22 and calculate
7(22) - 18 = 154 -18 = 136 degrees
Answer:
She wanted to know how long it took her to complete one set of 30 jumping jacks on average, and the results were 28 seconds and 30 seconds. 33 seconds are up 3 minutes 35 seconds
Step-by-step explanation:
Multiply each side by 2: 2(x/2) + 3(2) = 5(2) => x + 6 = 10
Subtract 6 from each side: x + (6 - 6) = 10 - 6 => x = 4
The answer is x is equal to 4.
For 2 it is slope 3 and y intercept (0,5)
For 3 it is slope y=-4x-5
Method One
You could divide by 5 right away.
20/5 = - 3 + x
4 = - 3 + x Add 3 to both sides.
4 + 3 = x
x = 7
Method Two.
You could remove the brackets. This is slightly longer, but some questions can only be solved that way.
20 = 5(-3) + 5x
20 = -15 + 5x Add 15 to both sides
20 + 15 = 5x
35 = 5x Divide by 5
35/5 = x
7 = x
