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mrs_skeptik [129]
3 years ago
11

4. The teacher recommends that students read for 20

Mathematics
1 answer:
Maksim231197 [3]3 years ago
4 0
Assuming that the student reads 1/2 a page per minute, they would read 40 pages a night.
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Degree 3 polynomial with zeros -7, 3i, and -3i
d1i1m1o1n [39]

A polynomial having degree 3 with zeros -7, 3i, and -3i is:
x³+ 7x² - 9x - 63

The correct answer is an option (A)

In this question, we need to find the polynomial whose degree is 3 polynomial and zeros are -7, 3i, and -3i

The zeros of the required polynomial = -7, 3i, and -3i

This means, the roots of the polynomial = (x + 7), (x - 3i) and (x + 3i)

We know that in complex numbers, i = √-1

So, 3i = 3√-1

          = √-9

i.e., the roots of the polynomial are (x + 7), (x - √-9) and (x + √-9)

And the polynomial would be,

(x + 7)(x - √-9)(x + √-9)

= (x + 7)(x² - (√-9)²)

= (x + 7)(x² - (-9))

= (x + 7)(x² + 9)

=  x³+ 7x² - 9x - 63

Therefore, a polynomial having degree 3 with zeros -7, 3i, and -3i is:
x³+ 7x² - 9x - 63

The correct answer is an option (A)

Learn more about the polynomial here:

brainly.com/question/14344049

#SPJ1

4 0
1 year ago
What is 1.25 rounded to a whole number??
mel-nik [20]
1.25 rounded to a whole number would be 1 because the 2 tenths doesn't do that much to round the 1 up to a 2.
1.25 rounded to the nearest tenth would be 1.3 because the 5 lets the 2 round up to a three. **Remember 5 or more, let it score, 4 or less let it rest.

Hope this helped:):)
5 0
3 years ago
Find the volume of a sphere with a diameter of 4 inches. Use 3.14 for π. Round your answer to the nearest tenth.
Mrrafil [7]

Answer:

V≈33.51in³

Step-by-step explanation:

have a great day!

5 0
3 years ago
Can someone confirm that this answer is correct?
aleksandr82 [10.1K]

You are correct, but I would remove the x and answer it with them connected. It looks like you want the x to be distributed, which would be wrong.

It should look more like:

20(n+1)(n-1)

4 0
3 years ago
NEED CORRECT ANSWERS NOW! WILL MARK BRAINLIEST!!
rusak2 [61]

(a) There are 1/4 cups of flour per serving

<u>WORK:</u> 1.5/6=1/4 (change 1 1/2 into decimal)

(b) <u>**not sure**</u> There are approximately .18 cups of sugar per serving.

<u>WORK:</u> 9/2+4/12=13/12 and then divide 13/12 by 6.

(c) You need 2 1/4 cups of flour to make 9 servings.

<u>WORK:</u> 1.5/2=.75

1.5+.75=2.25=2 1/4

(d) Someone would need to know the amount of sugar to properly make the recipe and if needed know how much to put if you wanted to split the recipe.


6 0
3 years ago
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