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Rudik [331]
3 years ago
14

SOMEONE PLEASE GIVE STEP BY STEP ILL GIVE BRAINLIEST

Mathematics
1 answer:
Natalija [7]3 years ago
8 0

Answer:

18.9 or 23.625

Step-by-step explanation:

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Find all the zeroes of the equation. x4 – 6x2 – 7x – 6 = 0
NeX [460]

Answer:

-2, 3,  -0.5 + 0.866i,   -0.5 - 0.866i.

Step-by-step explanation:

As the last term is -6 , +/- 2 , +/- 3 are possible zeroes.

Try 2:-

(2)^4 - 6(2)^2 - 7(2) - 6 = -28 so  2 is not a zero.

3:-

(3)^4 - 6(3)^2 - 7(3) - 6 = 0 so 3 is a zero.

(-2)^4 - 6(-2)^2 - 7(-2) - 6 =  0 so -2 is also a zero.

Divide the function by (x +2)(x - 3),  that is  x^2 - x - 6

gives  x^2 + x + 1

x^2 + x + 1

So we have x^2 + x + 1 = 0

x =  [-1 +/- √(1^1 - 4*1*1)] / 2

= -1 + √(-3) / 2 , - 1 - √(-3)  / 2.

= -0.5 + 0.866i, -0.5 - 0.866i

7 0
3 years ago
A librarian knows that 45% of the books currently checked out will NOT be returned on the due date. The library has a
malfutka [58]

Answer:

79 books

Step-by-step explanation:

45% books not returned = 55% books will be returned

145 books currently checked out

55% of 145 = 79.75

since you can't return 3/4 of a book, i would round down to 79.

7 0
3 years ago
5. What’s the answer to this question ASAP
tatiyna

Answer:

D is the correct answer

(hope this helps)

8 0
3 years ago
1. Knowing that the area of a rectangle and a parallelogram is (base * height), use the given side length and
astraxan [27]

Answer:

51.84sq

Step-by-step explanation:

4 0
3 years ago
Evaluate the expression for the given values.<br> 12x+5y/3z, where x + 1/2, y = 6 and z = 3
Semmy [17]

Answer:

4

Step-by-step explanation:

Substitute: \frac{\frac{12}{2} +5*6}{3*3}

Cross out the common factor: \frac{6+5*6}{3*3}

Calculate the product or quotient: \frac{6 +30}{3*3}

Calculate the product or quotient: \frac{6+30}{9}

Calculate the sum or difference: \frac{36}{9}

Cross out the common factor: 4

Answer: 4

6 0
2 years ago
Read 2 more answers
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