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Murljashka [212]
3 years ago
11

Set up and solve a quadratic equation to work out the value of x

Mathematics
1 answer:
galben [10]3 years ago
4 0
X= 24 simple calculations are there
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Almost doneeeeeee help meeeeeeee it was due yesterday
Ann [662]

Answer:

Okay. I got:

FGCE

Step-by-step explanation:

6 0
2 years ago
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Which expression is a trinomial?<br> x + y – 13<br> 4xyz
liq [111]

Answer:

x+y-13

Step-by-step explanation:

A polynomial with three terms is called a trinomial.

rate brainliest if very helpful

7 0
2 years ago
2х - Зу = 32<br> x + 4у = -20<br><br><br> solve the system of equations
ANTONII [103]
Answer: x=68/11 and y=-72/11


Steps:

2(x+4y=-20)

2x+8y=-40

2x - 3y = 32
- 2x + 8y = -40

-11y=72

y=-72/11


x + 4(-72/11) = -20

x - 288/11 = -20

x=68/11
5 0
2 years ago
PLEASE HELP ILL GIVE BRAINLIST <br><br> Write an equation in Standard Form that has roots -4 and 7.
Misha Larkins [42]

Answer:

x^{2} -3x-28

Step-by-step explanation:

To find this equation in standard form, first, write it in factored form. This looks like y=(x+4)(x-7). Then, multiply the polynomials using the FOIL (First, Outside, Inside, Last) method.

  1. Following the FOIL method, you should multiply the first terms in each binomial, x*x, which equals x^{2}.
  2. Then, the outside terms, x*-7. This equals -7x.
  3. Next, the inside terms, 4*x=4x.
  4. Finally, the last terms, 4*-7, this equals -28.

Then, add all of the terms together x^{2} + -7x+4x+-28. To get the standard form, combine like terms, this comes out to x^{2} -3x-28.

3 0
3 years ago
A test has 20 questions. The test awards 3 points if the answer is correct and takes away 1 point if the answer is incorrect. A
Svetradugi [14.3K]

Answer:

C. -5

Step-by-step explanation:

20 x 3 = 60

5 x 1 = 5

60 - 5 = 55

5 0
2 years ago
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