Answer: 11/24
Step-by-step explanation:
whenever u see this — (
it means the opposite of. so the opposite of -5/8 is +5/8.
-1/6 + 5/8 = 11/24
To solve we multiply the last equation by 5 and we get the following:
5x-5y=90
But 5x=3y and we replace it in this equation:
3y-5y=90
-2y=90
y=-45
and x-(-45)=18 , x+45=18
x=-27
Answer:
Since p >0.05 at 5% significance level we reject that it is cheaper to eat at a restaurant than to cook the meal yourself!
Step-by-step explanation:
Given that the mean cost of a steak, broccoli, and ride at the grocery store is $13.04.
Sample size n = 100
Sample mean =
Std error of sample =
(Left tailed test)
Mean difference =
Test statistic = t = mean diff/std error
=
p value one tailed =0.075
Since p >0.05 at 5% significance level we reject that it is cheaper to eat at a restaurant than to cook the meal yourself!
Answer:
12.50 + (7.5)(h-1) ≤ 50
6 hours or less
Step-by-step explanation:
The first hour is 12.50. Each additional hour is 7.50
Let h be the number of hours
12.50 + (7.5)(h-1)
We use h-1 since the first hour is 12.50
This must be less than or equal to 50
12.50 + (7.5)(h-1) ≤ 50
Now we solve the inequality
Subtract 12.50 from each side
12.50-12.50 + (7.5)(h-1) ≤ 50-12.50
(7.5)(h-1) ≤ 37.50
Divide by 7.5 on each side
(7.5)/7.5(h-1) ≤ 37.50/7.5
h-1 ≤ 5
Add 1 to each side
h-1+1 ≤ 5+1
h ≤ 6
We can only rent for 6 hours or less
X^2 - 2x + 5 = 0
(x - 1)^2 - 1 + 5 = 0
(x-1)^2+4=0
(why no spaces?)