M= 2/3 that is the slope I hope this helps
Answer:
a)
Step-by-step explanation:
x is always the rate of change.
And the initial value is the number after the x. In this case it's 1
The cost of the accessories is $29.25.
You need to turn the percent into a decimal by moving it twice to the left to have the ability to multiply it with the price of the cellphone.
So, 225 • 0.13 = $29.25
Answer:
5.75 days
Step-by-step explanation:
Write a proportion:
1440 Wh / 1 day = 8280 Wh / x
Cross multiply:
1440 x = 8280
Solve for x:
x = 5.75
It takes 5.75 days.
-3x + 3y = 24
x + 2y = 13
(x + 2y) - 2y = 13 - 2y
x = 13 - 2y
-3(13 - 2y) + 3y = 24
-39 + 6y + 3y = 24
9y - 39 = 24
(9y - 39) + 39 = 24 + 39
9y = 63
9y ÷ 9 = 63 <span>÷ 9
y = 7
x + 2y = 13
x + 2(7) = 13
x + 14 = 13
(x + 14) - 14 = 13 - 14
x = -1
When x = -1
y = 7
An easy way to check:
-3x + 3y = 24
-3(-1) + 3(7) = 24
3 + 21 = 24
24 = 24
Since it is the same on both sides, our answers are correct. </span>
