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Debora [2.8K]
3 years ago
5

How to do the discriminant and the quadratic formula?

Mathematics
1 answer:
aivan3 [116]3 years ago
8 0

Answer:

Quadratic formula (see image)

Step-by-step explanation:

Discriminant: b^2-4ac

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Use the elimination method to solve this system.
leva [86]

Answer:

The solution for this system is: x = -1, y = 1

Step-by-step explanation:

The problem states that we have to solve this system by the elimination method

In the elimination method, we transform the system in such a way that one variable can cancel each other. With this, we find the result of the other variable. Then, we can replace the variable we found in any of the equations, and we have the value of the variable that we had initially canceled.

In this problem, we have the following system:

1) -6x + 5y = 1

2) 6x + 4y = -10

If we add equations 1) and 2), the variable x is going to be eliminated

1) + 2)

-6x + 6x + 5y + 4y = 1 - 10

9y = -9

y = \frac{-9}{9}

y = -1

Now, we can replace the value of y in any of the equations, to find x:

I will replace in equation 2)

6x + 4y = -10

6x + 4(-1) = -10

6x = -6

x = \frac{-6}{6}

x = -1

The solution for this system is: x = -1, y = 1

5 0
3 years ago
The table represents the amount of storage space, in megabytes, used by music files on Zayd’s computer.
goldenfox [79]

Answer:

As the number of files increases, the storage space used increases.

4 0
2 years ago
Read 2 more answers
9/10 as a decimal? I think I know the answer but need to check
AfilCa [17]
The answer is .9 
<em><u>I hope this helps.</u></em>
8 0
3 years ago
Read 2 more answers
Find the monthly payment for the loan. Finance $500,000 for an apartment complex with a 12.3% 10-year loan.
Marina86 [1]

Using it's formula, it is found that the monthly payments for the loan of the apartment is of $7,260.50.

<h3>What is the monthly payment formula?</h3>

It is given by:

A = P\frac{\frac{r}{12}\left(1 + \frac{r}{12}\right)^n}{\left(1 + \frac{r}{12}\right)^n - 1}

In which:

  • P is the initial amount.
  • r is the interest rate.
  • n is the number of payments.

In this problem, the parameters are given as follows:

P = 500000, r = 0.123, n = 12 x 10 = 120.

Hence:

r/12 = 0.123/12 = 0.01025.

Then, the monthly payments will be of:

A = P\frac{\frac{r}{12}\left(1 + \frac{r}{12}\right)^n}{\left(1 + \frac{r}{12}\right)^n - 1}

A = 500000\frac{0.01025(1+0.01025)^{120}}{(1+0.01025)^{120} - 1}

A = 7260.50.

More can be learned about the monthly payment formula at brainly.com/question/26267630

#SPJ1

6 0
2 years ago
Can someone answer? Please I tried everything I don’t know how to do this.
dedylja [7]

Step-by-step explanation:

  • -7.2(x-15.6)= -9
  • -7.2x+112.32= -9
  • -7.2x= -9-112.32
  • -7.2x= -121.32
  • x= -121.32/ -7.2
  • x=16.85

<h2>hope it helps.</h2><h2>stay safe healthy and happy.</h2>
4 0
3 years ago
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