Answer:
30
Step-by-step explanation:
9 + 13 = 22
22 + 43 = 65
65 + 55 = 120
120 ÷ 4 = 30
hope this helps
Answer:

Step-by-step explanation:





Answer:
The appropriate hypotheses for performing a significance test is:


Step-by-step explanation:
Last year, the mean score on the state’s math test was 51. The administrators have trained the teachers in a new method of teaching math hoping to raise the scores on this standardized test this year.
At the null hypothesis, we test if the mean score this year is the same as last year, that is:

At the alternate hypothesis, we test if the mean score improved this year from last, that is:

The appropriate hypotheses for performing a significance test is:


Answer:
5yz
Step-by-step explanation:
1st expression=10xyz
=<u>5</u>*2*x*<u>y</u>*<u>z</u>
2nd expression=15(y)2 (z)2
=<u>5</u>*3*<u>y</u>*y*z*<u>z</u>
therefore H.C.F=5yz
underlines are taking common.
The nearest value of the mass is <span>3.27 grams
it s near 3.25
answer is c</span>