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Anna35 [415]
3 years ago
8

Factor the trinomial. x^2-4x-5

Mathematics
1 answer:
Morgarella [4.7K]3 years ago
7 0
<h3>Answer: Choice C.  (x+1)(x-5)</h3>

We need to find two numbers that

  • Multiply to -5 (last term)
  • Add to -4 (middle coefficient)

Through trial and error, those two numbers are 1 and -5

  • 1 times -5 = -5
  • 1 plus -5 = -4

So this means x^2-4x-5 factors to (x+1)(x-5)

This is the same as (x-5)(x+1) since the order of multiplication doesn't matter.

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Write the equation of the line from the graph.​
Ket [755]

Answer: x=-5

Step-by-step explanation:

Graph has no y intercept, thus has to be equal to x, and since its -5... x=-5 is your answer

7 0
2 years ago
Which equation could generate the curve in the graph below?
Troyanec [42]
The seconds on will generate the curve
5 0
2 years ago
Directions: For the following systems, determine whether or not the ordered triple (1, -1, -2) is a solution to the equations be
uranmaximum [27]

Put the coordinate and check each

#1

\\ \rm\Rrightarrow 3x-3y-z=2

\\ \rm\Rrightarrow 3(1)-3(-1)-(-2)=2

\\ \rm\Rrightarrow 3+3+2=2

\\ \rm\Rrightarrow 6+2=2

\\ \rm\Rrightarrow 8\neq 2

No

#2

\\ \rm\Rrightarrow 2(1)-3(-1)-2=-3

\\ \rm\Rrightarrow 2+3-2=-3

\\ \rm\Rrightarrow 3\neq-3

Unless you did typing mistake on right hand side it's

  • No

#3

\\ \rm\Rrightarrow 1-1-2=-2

\\ \rm\Rrightarrow -2=-2

Yes

#4

\\ \rm\Rrightarrow 1+2(-1)-(-2)=0

\\ \rm\Rrightarrow 1-2+2=0

\\ \rm\Rrightarrow 1\neq0

No

#5

\\ \rm\Rrightarrow 5(1)+1-5(-2)=16

\\ \rm\Rrightarrow5+1+10=16

\\ \rm\Rrightarrow 16=16

Yes

#6

\\ \rm\Rrightarrow 4(1)+5(-1)-6(-2)=-13

\\ \rm\Rrightarrow 4-5+12=-13

\\ \rm\Rrightarrow -1+12=-13

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No

8 0
1 year ago
Please help my mom is gonna hit me if i don't get it right. <br> the answer is NOT 18
Nookie1986 [14]

Answer:

Lol I hope she didn't hit you yet. The answer is x=14 :)

Step-by-step explanation:

So the first thing that you would want to do is find what 9 is multiplied by to get 21. To do this, we can just do a simple algebraic equation: 9x=21. The answer is 7/3 because mAgIc. So now, we can also multiply 6 by 7/3. this would be 42/3 because of more MaGiC. 42/3 divides into 14 because im  just obviously a mage. lol I hope this helped.

6 0
2 years ago
What is the formula to find out percent of discounts?<br>$7.00 IS WHAT PERCENT DISCOUNT OF $25.00?
AleksandrR [38]
Divide the discount by the price
7/25 = 28%
5 0
3 years ago
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