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Novosadov [1.4K]
3 years ago
12

Classes

Mathematics
1 answer:
Marat540 [252]3 years ago
6 0
The first one is 36 and the second one is -4/7 I believe
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What are the roots of the polynomial equation? x² + 7x + 12 = 0 Enter your answers in the boxes. x1= x2=
oksian1 [2.3K]
The equation factors as
.. (x +3)(x +4) = 0
By the zero-product rule, the roots are
.. x1 = -4
.. x2 = -3

3 0
4 years ago
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A right circular cylinder has a surface area of 66π. If the height of the cylinder is 8, find the diameter of the base.
prisoha [69]

Answer:

6

Step-by-step explanation:

h = 8

Surface area = 66π

2πr(r +h) = 66π

2πr(r + 8) = 66π

r(r + 8) =\dfrac{66\pi }{2\pi }

r² + 8r = 33

r² + 8r - 33 = 0

r² + 11r - 3r - 33 = 0

r(r + 11) - 3(r + 11) = 0

(r +11 ) (r - 3) = 0

r - 3 = 0             {Ignore r = -11 as radius will not have negative value}

r = 3

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3 0
3 years ago
The length of a rectangle is one inch less than three times its width. If the perimeter of the rectangle is 54 inches, find the
max2010maxim [7]

Answer: 20;

w - width

3w - 1 - length

54 in - perimeter

w + w + (3w - 1) + (3w - 1) = 8w - 2 - perimeter

The equation:

8w - 2 = 54      add 2 to both sides

8w = 56     divide both sides by 8

w = 7

3w - 1 = 3(7) - 1 = 21 - 1 = 20

Answer: The length = 20 in.

Step-by-step explanation:

5 0
4 years ago
B-(-1) 219<br><br><br> please help I’m literally not smart
melisa1 [442]

Answer:

b + 220

Step-by-step explanation:

-(-1) simplifies to 1

1+ 219 = 220

7 0
3 years ago
ANSWER ASAP WILL MARK BRAINLIEST
Katena32 [7]

Answer:

how many

Step-by-step explanation:

8 0
3 years ago
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