Answer:
197
Step-by-step explanation:
Divide 1640 by 25
1640/25=65
Then multiply 65 and 3
65x3=197
Answer: x = 12
Step-By-Step: 180 - 100 = 80
Step-By-Step: 80 - 12 = 68
Step-By-Step: 68 is angle ( X + 12)
68 + 12 = 80 + 100 equals 180
Answer:
solve simultaneously
start by labeling them equation 1 and 2 then choose whether you want to make x or y the subject from knew of the equations
<h2>
Answer with explanation:</h2>
Let be the population mean.
For the given claim , we have
Null hypothesis :
Alternative hypothesis :
Since alternative hypothesis is two-tailed , so the test is a two-tailed test.
Given : Sample size : n=220 ;
Sample mean: ;
Standard deviation:
Test statistic for population mean:
By using the standard normal distribution table of z , we have
P-value ( two tailed test ) :
Since , the P-value is greater than the significance level of , it means we do not have sufficient evidence to reject the null hypothesis.