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Elena L [17]
4 years ago
5

Find all roots: x^3 + 7x^2 + 12x=0

Mathematics
1 answer:
Mars2501 [29]4 years ago
7 0

Answer:

see explanation

Step-by-step explanation:

To find the roots factor the left side

x³ + 7x² + 12x = 0 ← factor out x from each term

x(x² + 7x + 12) = 0

x(x + 3)(x + 4) = 0

Equate each factor to zero and solve for x

x = 0

x + 3 = 0 ⇒ x = - 3

x + 4 = 0 ⇒ x = - 4

Roots are x = - 4, x = - 3, x = 0

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What is 2:7 of 36 o.o
o-na [289]

Answer:

8:28

Step-by-step explanation:

7+2 = 9

36/9 = 4

4 x 2 = 8

7 x 4 = 28

8:28

Is this what you are asking?

5 0
3 years ago
A tent was marked up 150% from an original cost of $52. Last Friday, Ethan bought the tent and paid an additional 10% in sales t
Savatey [412]

Answer

Find out the  what was his total cost .

To prove

As given

A tent was marked up 150% from an original cost of $52.

Last Friday, Ethan bought the tent and paid an additional 10% in sales tax.

Than the equation becomes

150 % is written in the decimal form .

=\frac{150}{100}

= 1.5

10 % is written in the decimal form .

=\frac{10}{100}

= 0.1

cost of the tent when 150% marked up from origianl price = 1.5× 52

                                                                                                = $ 78


cost of the tent = origianl cost + 150% marked up from origianl price

                                  =  $52 + $78

                                  = $ 130

Sales price on the tent = $130 × 0.1

                                      = 13

Total cost of the tent = $130 + $13

                                  = $143

Therefore the cost of the tent is $143.

3 0
3 years ago
Read 2 more answers
If the statement if I'm hungry, then I am not happy is assumed to be true is it's inverse of I am not hungry then I must be happ
Natasha_Volkova [10]

Answer:

yes!

Step-by-step explanation:

"i am not happy when hungry" is the inverse of "i am not hungry, i am happy."

3 0
3 years ago
Can some one explain to me wht to do plz!!!
mestny [16]
If you like my answer, please make me the brainliest answer! It means a lot. :)

They've told us the net force already, which is 25 N.

We use this to calculate the unknown force from the right side.

All we do is 135 - 25 = 110 N!
6 0
4 years ago
How to set up and solve a system of equations to solve a problem
Paladinen [302]

Answer:

Step-by-step explanation:

Step 1: Solve one of the equations for one of the variables.

Step 2: Substitute that equation into the other equation, and solve for x.

Step 3: Substitute x values into one of the original equations, and solve for y.

6 0
3 years ago
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