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Andrew [12]
3 years ago
8

15 Points!

Mathematics
2 answers:
Nezavi [6.7K]3 years ago
8 0
Replace f(x) with 0 and swith the equation around to solve for x

 x^4 - 32x^2 - 144 = 0

Factor the left side:

(x+6) (x-6) (x^2+4)

so far we have x+6 = 0, x = -6
                         x -6 = 0, x = 6

solve x^2 +4 = 0
x^2 = -4
x = sqrt(-4) 
x = 2i, -21

The answer is B) 2i, 6, -6
andrezito [222]3 years ago
5 0
f(x)=x^4-32x^2-144\\\\f(x)=0\iff x^4-32x^2-144=0\\\\x^4-36x^2+4x^2-144=0\\\\x^2(x^2-36)+4(x^2-36)=0\\\\(x^2-36)(x^2+4)=0\iff x^2-36=0\ \vee\ x^2+4=0\\\\x^2=36\ \vee\ x^2=-4\\\\x=\pm\sqrt{36}\ \vee\ x=\pm\sqrt{-4}\\\\x=-6\ \vee\ x=6\ \vee\ x=-2i\ \vee\ x=2i

Answer: <span>C) 2i, 6, -6</span>

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20 points <br><br> What do you remember about types of angles?
Allushta [10]

An acute angle is one that measures LESS than 90˚

An obtuse angle is one that measures between 90˚ and 180˚

A reflex angle is an angle that measures between 180˚ and 360˚

There are other many types of angles such as alternate angles and corresponding angles, but those 3 are the main ones.

Have a great day <3

8 0
3 years ago
Please help! With explanation, thanks!
Ber [7]
45.6%, I think


If the angle was 45 degrees, then 50% of the circumference of the ice cream would be inside the cone.
But the real angle is 41. 41 = (41/45) * 45

So if we multiply 45 by 41/45, we get 41. In the same way, if multiply the "50%" by 41/45, we get the percentage of ice cream circumference that is in the cone.

50% * 41/45 = 45.6%
4 0
3 years ago
Which of the following are identities? Check all that apply.
gulaghasi [49]

Answer:

A B and C

Step-by-step explanation:

Hopefully this helps

6 0
3 years ago
What is the value of y for the line that has a slope of 1 and goes through the points (-4, y) and (-2, 8)?
Pavel [41]

Answer:

y = 6

Step-by-step explanation:

To write the equation of a line, calculate the slope between points (-4,y) and (-2,8). Substitute m = 1 and solve for y.

m = \frac{y_2-y_1}{x_2-x_1}\\\\ 1 = \frac{y-8}{-4--2}\\\\ 1 =\frac{y-8}{-2}\\\\-2=y-8\\\\6=y

6 0
3 years ago
HELLLLLP MEHHHHHHHH PLSSSSSSS
Wewaii [24]

Answer:

They both have the same range

Step-by-step explanation:

375-175=200

400-200=200

3 0
3 years ago
Read 2 more answers
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