1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
abruzzese [7]
4 years ago
15

Please help me out!

Mathematics
1 answer:
nikitadnepr [17]4 years ago
5 0

Answer is C.

90-77.5= 12.5

12.5/5.2= 2.40 z-score

90 is the missing answer

You might be interested in
What's the median of these numbers:<br> 14,20,24,16,20,18
faltersainse [42]
The answer to this is 19. The reason why is because the median falls between 18 and 20. After that, you have to take the middle number that falls between 18 and 20. In this case, 19. 
4 0
3 years ago
Read 2 more answers
Determine a and k so the given points are on the graph of the function.
pshichka [43]

Step-by-step explanation:

Explanation:

Because

(2,6) is in the function, we can plug

6 as y

and

2 as x.

From that we get

6=a(2−1)2+k

6=a+k

Same for the next point:

12=a(3−1)2+k

12=22a+k

12=4a+k

Now we have this system of equations to solve:

a+k=6

4a+k=12

Solving it leads to the conclusion that

a=2,k=4 .

3 0
3 years ago
Simplify: x²yx^4y + a²a^10 a2q10 - b^3b^3b + 5²c (5) ( It comes with a photo)​
ICE Princess25 [194]

Answer:

a^14q^10+x^6y^2−b^7+125c

( I hope this was helpful ) >;D

3 0
3 years ago
HELP ME PLS
Alisiya [41]

Answer:

7/24

Step-by-step explanation:

you have to have a common denominator so you multiply one denominator to the opposite numerator and denominator and vice versa. So for 2/3 you should get 16/24 and for 3/8 you should get 9/24. Then you subtract 9 from 16 and get 7. So the answer is 7/24

3 0
3 years ago
Read 2 more answers
g A test was conducted to determine if there is a difference between Canadian and American average heart rates. A group of 36 Ca
melisa1 [442]

Answer:

The test statistic  | t |  =4.45

Step-by-step explanation:

<u><em>Step(i):-</em></u>

Given that the first sample size n₁ = 36

Given that the second sample size n₂ = 34

Mean of the first sample x₁⁻ = 68.5

Mean of the second sample x₂⁻ = 70

<u><em>Step(ii):-</em></u>

Test statistic

       t = \frac{x^{-} _{1}-x^{-} _{2}  }{\sqrt{S^{2} (\frac{1}{n_{1} }+\frac{1}{n_{2} }  } )}

     t = \frac{68.5-70}{\sqrt{2(\frac{1}{36}+\frac{1}{34} ) } }

    t = \frac{-1.5}{0.337} = -4.45

The test statistic  | t | = |-4.45| =4.45

6 0
3 years ago
Other questions:
  • 44 friends evenly divided up an nnn-slice pizza. One of the friends, Harris, ate 111 fewer slice than he received. How many slic
    10·2 answers
  • Can u help me with a math question plz?
    12·1 answer
  • 5c/f=1/r, solve for r, c and f.
    15·2 answers
  • A pair of shorts are £15 in a 40%. What was the non-sale price
    10·1 answer
  • A printer has a contract to print 100,000 posters for a political candidate. He can run the posters by using any number of plate
    8·1 answer
  • I need the answers for 2 and 3
    8·1 answer
  • If f(1)=6 and f(n)=f(n-1)+2 then find the value of f(4).
    14·1 answer
  • Which point on the number line shows 45 ?
    14·1 answer
  • 30÷4<br><br><br><br>pls show the working ​
    7·2 answers
  • What is the combined length of all the buttons longer than 1 inch?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!