MATHEMATICS HIGH SCHOOL

Given a mean of 8 and a standard deviation of 0.7, within how many standard deviations of the mean do the values 7.7, 8.4, 9, 8, and 6.9 fall?2

1

0

3

Answers

Answer 1
Answer: *We can to find the upper limit of the data by using the values given in the options.
If 2
the upper limit is 8 + 2*0.7 = 9.4

If 1
the upper limit is 8 + 1*0.7 = 8.7

If 0
the upper limits is 8+ 0*0.7 = 8

If 3
the upper limit is 8 + 3*0.7 = 10.1

Therefore, the answer is
3
since all the values are included

Related Questions

Factor completely 4u^2 + 28u + 49
A wall in Marcus's bedroom is 8 2/5 feet high and 16 2/3 feet long. If he paints 1/2 of the wall blue, how many square feet will be blue?
Duo makes 65%65% of his dumplings with vegetarian fillings. What fraction of Duo's dumplings have vegetarian fillings?
Why is 85, 19, 17, 4, and 2 is similar?
What is 5 7/8 rounded to the nearest whole number?

Craig has £13.40 he sees this offer in a restaurant :main courses £8.90 each.Buy one main course and get the second half price. Can he afford to buy two main courses?Show your working

Answers

Answer:

Yes

Step-by-step explanation:

Full price for first course:  £8.90

Half price:                           £4.45

One and one half times

 full price is then:             £13.35

Since this is less than Craig's £13.40, he can just barely afford to buy two main courses at these prices.

Twenty added to the sum of a number and six is twenty-seven

Answers


-- Call the number 'N'.

-- The sum of the number and six is (N + 6).

-- Twenty added to it is    20 + (N + 6)

-- That whole thing is twenty-seven           

                                              20 + (N + 6) = 27

Subtract  20  from each side:          (N + 6) = 7

Subtract  6  from each side:              N      =  1

==================================

Check: 

Put your solution into the statement and see if the statement is true.

     "Twenty added to the sum of (1 and six) is twenty-seven."

That's true.            yay !
for six is twenty seven will look like this 

6 = 27 

sorry i don't know what twenty added to the sum of a number is...

Which of the given functions represents a linear function?

Answers

Answer: The answer is Option 3

For the system of equations shown below2x = −y + 6
−4x + 3y = 8
What is the solution to the system of equations?

Answers

2x=-y+6
-4x+3y=8
Rewriting the equations;
y+2x=6
3y-4x=8

Multiplying equation I by 3;
3y+6x=18
3y-4x=8
Subtracting equation II from equation I;
10x=10
x=1

Replacing for x in the first equation;
2x=-y+6
2(1)=-y+6
2=-y+6
2-6=-y
-4=-y
y=4

Please help asap 20 pts

Answers

B. The graph touches, but does not cross the x-axis, so the discriminant has to be 0.

Which of the following represents the zeros of f(x) = 3x^3 − 10x^2 − 81x + 28?A) 7, -4, 1/3
B) 7, -4, -1/3
C) 7, 4, 1/3
D) 7, 4, -1/3

Answers

Option A). 7, -4 and 1/3

To find the zeros you can factor the polynolial into (3x-1)((x+4)(x-7)

Then:
3x -1 =0 => x = 1/3
x+4=0 => x = -4
x-7 =0 => x =7

Those are the three zeros.
Other Questions
Write down the 1st term in the sequence given by t(n) = n2+4
Identify the conic section of xy=4
Solve the following system of equations . Enter the y-coordinate of the solution . Round your answer to the nearest tenth. 5x+2y =7. -2x+6y=9
a cylindrical tank has a radius of 15 ft. and a height of 45ft. how many cubic feet of water can the tank hold?