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Alex73 [517]
3 years ago
8

7. A survey made on 45 students for number of hours spent on watching T.V in a week is recorded : 8, 4, 7, 10, 12, 15, 10, 9, 8,

7, 12, 14, 16, 5, 6, 13, 8, 7, 9, 14, 10, 15, 12, 6, 15, 12, 7, 6, 9, 10, 6, 15, 14, 10, 4, 9, 8, 10, 7, 4, 8, 7, 13, 6, 18. Arrange the above data in ascending order : (i) How many students watch T.V for more than 15 hours a week? (ii) How many of them spend less than 6 hours a week on T. V. ​
Mathematics
1 answer:
lana66690 [7]3 years ago
7 0

Answer:

6 watch more than an hour and 3 watch less than 6 hours

Step-by-step explanation:

BRAINLIEST PLS

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Write a polynomial function in standard form with zeros at −3, −1, and 1.
Annette [7]

Answer:

f(x) = {x}^{3}  + 3 {x}^{2}  - x -3

Step-by-step explanation:

The given polynomial has zeros at:

x=−3, x=−1, and x=1.

This means that:

x+3, x+1, and x-1 are all factors of this polynomial.

The factored form of this polynomial is :

f(x) = (x + 3)(x + 1)(x - 1)

We expand the last two factors using difference of two squares.

f(x) = (x + 3)( {x}^{2}  - 1)

f(x) = x ( {x}^{2}  - 1) + 3( {x}^{2}  - 1)

f(x) = {x}^{3}  - x+ 3 {x}^{2}  -3

f(x) = {x}^{3}  + 3 {x}^{2}  - x -3

This is the standard form because it is now in decreasing powers of x.

8 0
3 years ago
Why does the quotient of 8 ÷ 1 not change when we add a place value in the dividend and the divisor to make 80 ÷ 10?
Alex Ar [27]

Answer:

Basically this is because division can be thought of as how many times does the divisor have to be multiplied in order to produce the dividend.

So you would need to multiply 1 8 times in order to produce the dividend,

Similarly, 10 goes into 80 8 times. The zeros are simply cancelled out in the division.

4 0
3 years ago
Michelle is making a scale model of her favorite car. The actual car is 8 feet long and 4 feet wide. Michelle wants her model to
AfilCa [17]

Answer:

6 inches

Step-by-step explanation:

It is given that :

Length of the actual car = 8 feet

Width of the actual car is = 4 feet

Michelle is making a model of her car.

The length of her model car  = 12 inches

Therefore, the ration is 3 : 2

So the width of the model car = 4 x 3/2

                                                 = 6 inches

7 0
3 years ago
Please help me thank you
fgiga [73]
I hated probability in middle school. I'm not 100% sure but I would go with the 3rd answer choice, 3/100.
3 0
3 years ago
Find 4 geometric means between -5 and -125.
balandron [24]

The geometric means between -5 and -125 is; 25

<h3>How to find the geometric mean?</h3>

To find the geometric mean between two numbers, we simply find the square root of the product of the two numbers.

For example, geometric mean between A and B is;

G.M = √(A * B)

Thus, geometric mean between -5 and -125 is;

G.M = √(-5 * -125)

G.M = √625

G.M = 25

There could be other geometric means between this like;

G.M = √(-5 * -45) = 15

Or GM = √(-10 * -40) = 20

Read more about geometric mean at; brainly.com/question/17266157

#SPJ1

8 0
2 years ago
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