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BigorU [14]
3 years ago
8

Find the surface area! correct gets brainliest!

Mathematics
1 answer:
Alja [10]3 years ago
5 0

Answer:

where is the picture i cant see anything except find the surface area! correct gets brainliest!

Step-by-step explanation:

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SOLVE x^4 − 15x^2 − 16 = 0 <br> What are the roots of the equation?
kakasveta [241]

Answer:

roots : 4, -4, i, -i

Step-by-step explanation:

This gets a bit tricky.

We have to substitude x^2 as u in this problem.

Now to rewrite x^4 − 15x^2 − 16 = 0 with u, we get

u^2 - 15u - 16 = 0

( u - 16) (u + 1)

U = 16

U = -1

<em>This is not the end of the problem. </em>

Now we have to substitute x^2 back to u.

x^2 = 16  --> we get the roots 4 and -4

x^2 = -1 --> we get the roots i and -i

tadah!

8 0
2 years ago
Solve x to the second power = 144
vfiekz [6]

x ^ 2 = 144

x = 12, x = -12

Check:

12 * 12 = 144

-12 * -12 = 144

6 0
3 years ago
Read 2 more answers
For the function y=12x+6, if the input is x=−4, the output is y=
Sav [38]

Answer:

12(4) +6

48+6 = 54

y=54

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
Hi there can anyone help me out with this please
matrenka [14]
Simple interest,
FV=P(1+ni)
FV=future value=2500
P=present value, invested amount
n=number of years, =3
i=annual interest rate, =0.095
2500=P(1+3(0.095))
Solve for P.
8 0
3 years ago
Raymond has a set of 57 toy cars and decides to sell 19 of them to Joey. About how many toy cars does Raymond have left
Dovator [93]

Answer:

raymond has about 38 cars left

Step-by-step explanation:

Because raymond started off with 57 cars and he got rid of( take away) 19 you must use subtraction. 57 - 19 =38

4 0
2 years ago
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