Answer:
-27
Step-by-step explanation:
Any operations inside parentheses must be carried out first.
Thus,
9 ÷ 3[(20 − 7) − 22] becomes 9 ÷ 3[(13) − 22]
This, in turn, becomes 9 ÷ 3[-9].
The negative operator can be taken out and written up front: -9 ÷ 3[9) Note: this does not call for subtraction).
Carrying out the indicated operations from left to right:
-3(9) = -27
You would do 163 ÷ 9 and you will get your answer
Answer:
4n - 10
Step-by-step explanation:
Jay: n tickets
Pillar: 3n tickets
Jay + Pillar = n + 3n = 4n tickets
Now, Jay and Pillar together sold 10 more tickets than Amie, which means, in reverse, Amie sold 10 less tickets than Jay and Pillar together, so the expression for the number of tickets sold by amie would be:
4n-10 (4n is the number of tickets Jay and Pillar sold together, 10 is the difference between them and Amie).
<h2>
Answer with explanation:</h2>
Let
be the population mean.
Null hypothesis : ![H_0:\mu\geq26](https://tex.z-dn.net/?f=H_0%3A%5Cmu%5Cgeq26)
Alternative hypothesis : ![H_1:\mu](https://tex.z-dn.net/?f=H_1%3A%5Cmu%3C26)
Since the alternative hypothesis is left tailed, so the test is a left-tailed test.
Sample size : n=5 <30 , so we use t-test.
Test statistic: ![t=\dfrac{\overline{x}-\mu}{\dfrac{\sigma}{\sqrt{n}}}](https://tex.z-dn.net/?f=t%3D%5Cdfrac%7B%5Coverline%7Bx%7D-%5Cmu%7D%7B%5Cdfrac%7B%5Csigma%7D%7B%5Csqrt%7Bn%7D%7D%7D)
![t=\dfrac{25.2-26}{\dfrac{1}{\sqrt{5}}}\approx-1.79](https://tex.z-dn.net/?f=t%3D%5Cdfrac%7B25.2-26%7D%7B%5Cdfrac%7B1%7D%7B%5Csqrt%7B5%7D%7D%7D%5Capprox-1.79)
Critical t-value for t=![t_{n-1, \alpha}=t_{4,0.06}=1.9712](https://tex.z-dn.net/?f=t_%7Bn-1%2C%20%5Calpha%7D%3Dt_%7B4%2C0.06%7D%3D1.9712)
Since, the absolute value of t (1.79) is less than the critical t-value , so we fail to reject the null hypothesis.
Hence, we have sufficient evidence to support the company's claim.
Answer:
wheres the reszt of the question?
Step-by-step explanation: