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rodikova [14]
3 years ago
5

Can anyone help me with this one

Mathematics
1 answer:
BigorU [14]3 years ago
5 0

Answer:

-2.60 and 9.60

Step-by-step explanation:

You can do the quadratic formula or try to factor. I used a program in my calculator I already had to factor it.

You might be interested in
What is the solution to the system of equations? ⎧⎩⎨⎪⎪x+3y−z=24x+2y+5z=13x+z=12 (−4, 1, −3) (3, 0, 3) (5, −2, −3) (−1, 2, 3)
snow_tiger [21]
<h3>Answer:</h3>

(5, -2, -3)

<h3>Explanation:</h3>

We assume your equations are ...

  • x +3y -z = 2
  • 4x +2y +5z = 1
  • 3x +0y +z = 12

These have solution (x, y, z) = (5, -2, -3).

_____

<em>How we know</em>

Trying the choices in the last equation eliminates the first and last. Trying the second choice in the first equation eliminates it, leaving the 3rd choice as the answer you're looking for.

We also know because we can ask a graphing calculator to solve the matrix equation (or row-reduce the augmented matrix).

<em>Comment on this problem</em>

The hardest part of this problem is figuring your intent. The equations are not well-separated, so we have a hard time telling what is a constant and what is a coefficient. It took a couple of guesses to sort it out. A little editing before posting would be helpful.

8 0
3 years ago
What is -15+v over -3=21
Snezhnost [94]

Answer:

V = -48

Step-by-step explanation:

((-15 + v) /  -3) = 21

(-15 + v) = -63

v = -63 + 15

v = -48

4 0
3 years ago
Can someone show me how to do this?
andriy [413]
3/4 ( (-50+2)/5)
= 3/4 ( -48/5)
= 3/4 * -48/5
= -36/5
6 0
3 years ago
Which sentence is the most accurate definition of an identity?
olga2289 [7]

The <em>correct answer</em> is:


An identity is an equation that is true for all real numbers.


Explanation:


An identity is a mathematical statement that is always true. It does not matter what numbers you substitute in for the variables, the result will be the same.

7 0
3 years ago
Read 2 more answers
Solve for the unknown number in the equation ________ − 17 = 38 − 25.
antiseptic1488 [7]

Answer:

I believe the answer is 30.

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
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