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Gemiola [76]
3 years ago
15

Solve for m. 22m^2 + 7m - 2 = 0

Mathematics
1 answer:
pshichka [43]3 years ago
5 0

Answer:

x= -1/2 and x=2/11

Step-by-step explanation:

Write the 7x as a difference. It'll make it easier to factor out. An example of this would be 11x-4x

Therefore, the equation would look like this: 22x^2 + 11x-4x -2 =0

Look at it as if there are two equations: 22x^2+11x and -4x-2

Factor out the greatest common factor, which is 11 from the first equation. The equation will then look like this: 11x(2x+1)

Take the GCF for the second equation as well (which is -2). The equation should then also look like this: (2x+1)

Use the numbers on the outside of each of the parenthesis to form its own equation (to factor it out). This will be 11x-2

Now we have factored! Since the parenthesis equations are the same, we know that that is also part of the equation, so:

(11x-2)(2x+1)

Solve each equation for x by equaling them both to zero

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Which statements are true about the ordered pair (2, 3) and the system of equations?
adoni [48]

Answer:

The Correct Answer are

  • The ordered pair (2, 3) is not a solution to the system of linear equations.
  • When (2, 3) is substituted into the first equation, the equation is true.
  • When (2, 3) is substituted into the second equation, the equation is false.​

Step-by-step explanation:

The Correct Answer are

  • When (2, 3) is substituted into the first equation, the equation is true.

3x + 4y = 18   equation ( 1 )

3×2 + 4×3 = 18

6 + 12 = 18

18  = 18

  • When (2, 3) is substituted into the second equation, the equation is false.​

2x – 2y = 2

2×2 - 2×3= 4 - 6 = -2≠2

  • The ordered pair (2, 3) is not a solution to the system of linear equations.

Solution means if we (2, 3) Substitute in both the Equation it Must Satisfy

But in Equation 1  it Satisfy

and in Equation 2 Not satisfy

Therefore It is NOT a solution to the system.

6 0
3 years ago
Help due tomorrow…..
dangina [55]

Answer:

So the answer is H

Step-by-step explanation:

They could be situated as

x y z

in which case xy 5 and yz = 3

The total would be 8.

if they are situated like this

x z y

then xy = 5 and yz = 3 but its going the opposite way.

5 - 3 = 2

5 0
3 years ago
Here is the other question i was gonna mention, Ace =.= i would put it in the comments but i dont want to deal with brainly bein
navik [9.2K]

Answer:

a.) 9, -9

b.) 2(sqrt)15, -2(sqrt)15

c.) 4, -2+2i(sqrt)3, -2-2i(sqrt)3

d.) 3(sqrt)75

(some of the numbers are placed differently than I wrote them so here are screenshots- pls look at them rather than what I wrote ;w;)

3 0
2 years ago
In a sample with mean x = 12 and standard deviation s = 3.5, a data point at 16.8 would have what sample z-score?
sammy [17]
\dfrac{16.8-12}{3.5}\approx1.37
3 0
3 years ago
100 x 300 - 5+10-11-13
statuscvo [17]

The answer is 29, 981

Step-by-step explanation:

<em>First</em>) Since there are no parenthesis, you'd do 100 times 300 which equals 30,000

<em>Second</em>) Now youd go down the line since in PEMDAS, adding and subtracting are equal. 30,000-5 = 29,995

<em>Third</em>) 29,995+10= 30,005

<em>Fourth</em>) 30,005-11= 29,994

<em>Lastly</em>) 29,994-13= 29,981.

7 0
3 years ago
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