84/100 converted to percent is 84%.
Answer:
y = 4x
Step-by-step explanation:
We need to look at where the line's dots are to find the slope. Between each dot the line goes 1 to the right and 4 up. Remember the saying rise over run to know that the slop is 4/1. 4/1 is just 4 so in the equation we put that next to x.
The next part of making an equation is the y-intercept, or where it crosses the y-axis. Since this hits the y-axis at 0 the complete equation will be
y = 4x + 0
but obviously we don't need to add 0 so the answer is
y = 4x
Starry Crown charges (138 dollars)/(4 hours) = (138/4 dollars)/hour = (34.50 dollars)/hour
Solar R Us charges (143 dollars)/(5 hours) = (143/5 dollars)/hour = (28.60 dollars)/hour
Lights On Us charged (157 dollars)/(6 hours) = (157/6 dollars)/hour = (27.17 dollars)/hour
Lights On Us has the best rate.
Answer:
Step-by-step explanation:
Move the decimal place over 7 places to the left which means adding to the exponent.
3.63 x 10^7
Answer: 8x+3x=12x+9
The number is -9.
Step-by-step explanation: Combine like terms.
11x=12x+9
Subtract 12x from the other side. 11x-12x= -1x
-1x+9
Divide by -1 to isolate x.
-1/-1 cancels out.
9/-1= -9
x=-9
Plug in -9 to check your answer if you want to double check.
