Answer:
x=4
Step-by-step explanation:
First you add the values with x and theese without x:
(3x+8x+7x)+(9-6-2)=73
18x+1=73
Then you subtract (-1) from both sides:
18x=72
And then you divide by 18:
x=72:18=4
Answer:
100 dollars a year
Step-by-step explanation:
Answer:
12 kg
Step-by-step explanation:
15×80/100
15×8/10
120/10
12 kg
The answer is 104
8-4*3*-2^3
exponents first
8-4*3*-8
multiplication left to right
8-12*-8
8+96
now add
104 is the answer
Answer with explanation:
Given : Sample mean =
Standard deviation : 
Sample size : n = 36
Claim : 
∴ 
Since the alternative hypothesis is two tail , then the test is two tail test.
By using a z statistic and a 0.05 level of significance. Reject 
if z < -1.960 or is z> 1.960.
Then , the test static for population mean is given by :-
We reject since 
. We have statistically significant evidence at 
to show that the mean amount of garbage per bin is not different from 50.
