How do you solve this?

Answers

Answer 1

Answer: $Solve\ x^4-13x^2=-36.$

View this equation as a quadratic like so:
$x^2(x^2)-13x(x)+36=0$

We can factor just like a normal quadartic!
We want two numbers that multiply to 36x² and add to -13x.
These numbers are -9x and -4x.
Because our leading coefficient is 1, we can factor straight to (x²-4)(x²-9).
Here's what it would look like if we split the middle and factored:
$x^4-9x^2-4x^2+36=0\nx^2(x^2-9)-4(x^2-9)=0\n(x^2-4)(x^2-9)=0$

Of course, any value which causes either factor to equal zero is a solution.
The other factor times zero is still going to be zero, of course.
Let's derive these two possibilities from our equation.
$x^2-4=0,\ or\ x^2-9=0$
We can add that constant to the right side...
$x^2=4,\ or\ x^2=9$
And take the square root of each side.
$\boxed{x=\pm2\ or\ \pm3}$

So, your possible x values are
2, -2, 3, and -3.

Answer 2

Answer: x⁴-13x²+36
(x²-4)(x²-9)

x²=4. | x²=9
x=√4. |x=√9
x=2. |x=3

27x³-8=0
x³=8/27
x=2/3

...

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I need help on this question

Answers

2/8 = 3/12 is a porportion.

To find out, simplify each of the fractions.

(2/8)/(2/2) = 1/4
(3/12)/(3/3) = 1/4

2/8 = 3/12 is your answer

hope this helps

proportion:

1/4 = 2/8 = 3/12= 4/16 and so on

answer
A. 2/8 = 3/12

For each of these three equations, determine whether there are any solution(s). If there are solutions, say what they are and show how you found them. If there aren't solutions, explain why not. EXPLAIN!!! I will mark as brainliest!!!(a) x/3 + x/4 + x/5 + = (2x)/3 + (2x)/4 + (2x)/5

(b) y/3 + y/4 + y/5 = y/3 + y/4 + y/5 + 1

(c) z/3 + z/4 + z/5 = z/4 + z/5 + z/6 + 1$

Answers

For (a)
The resulting equation is
47x/60 = 47x/30
and the solution is 0

For (b)
The resulting equation is
47y/60 = 47y/60 + 1
which is reduced to
47y/60 - 47y/60 = 1
0 = 1 (impossible)

For (c)
The resulting equation is
47z/60 = 37z/60 + z
and the solution is 6

#3 heeeeelp pliz
number 3!

Answers

a) 8+3=11, 11-8=3, 11-3=8
b) 7-4=3, 3+4=7, 4+3=7
c) 5+19=24, 24-19=5, 24-5=19
Hope it helped!

In what way is a debit card similar to a check

Answers

Answer: they both have the ability to pay rapid and easily, the money already exists in the account unlike credit cards

Step-by-step explanation:

Answer:

The answer is C

I just took the test and got 100%

Brendan spent 24 minutes playing a computer game you stop playing at 3:55 p.m. and went outside to ride his bike what time did he start playing the computer game

Answers

he started playing at 3:31!!!!!!!!!!!!!!!!!!!

he started playing the computer game at 3:31

What is half of 5.20

Answers

5.20 divided by 2 is 2.6
then to check all you do is 2.6*2 and you get 5.20

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