1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Elodia [21]
4 years ago
7

Factor completely: 21) x2 – 2x - 8

Mathematics
1 answer:
mojhsa [17]4 years ago
4 0

Answer: x = -2 and 4

Step-by-step explanation:

x^2 - 2x - 8 = 0

(x - 4)(x + 2) = 0

You might be interested in
Can someone please help?!
weqwewe [10]

Answer:

Plot the points (0,0) and (1,3) to make the line.

Step-by-step explanation:

We know that a linear equation is y=mx+b, m is the slope and b is the y-intercept. We can see that the slope is m=3, and there is no b meaning b=0. Since the y-intercept is 0 we can start from the origin (0,0). The slope is 3/1 or known as rise/run. You go up 3 and go right 1, making the second point (1,3). This should work.

3 0
2 years ago
The angle measurement in the diagram are represented by the following expressions.
8_murik_8 [283]

Answer:

x = 9 and ∠ B = 40°

Step-by-step explanation:

See the diagram given with the question first.

Here we have ∠ A = ∠ B {They are corresponding angles}

Now, it is given that ∠ A = 5x - 5 and ∠ B = 3x + 13

Hence, 5x - 5 = 3x + 13

⇒ 2x = 18

⇒ x = 9

Therefore, ∠ B = 3x + 13 = 3(9) + 13 = 40° (Answer)

5 0
4 years ago
Solve the system of equations.<br> – 5x + 2y = 9<br> y = 7x<br><br> X =<br> Y =
Sphinxa [80]

Answer:

<em> x−y = 9 , x + y = 6</em>

<em>x + y = 4  ,  x − y = 2</em>

<em>x + 2 y = 4  ,  x − y = − 3 </em>

<em>try out these examples?</em>

<em />

<em />

5 0
3 years ago
Read 2 more answers
Select the postulate that is illustrated for the real numbers.
bulgar [2K]
<span>Multiplication identity.
Any number multiplied by 1 will have a solution of the original number</span>
4 0
3 years ago
Read 2 more answers
What’s 1+1 <br><br> 100 Points
Andrei [34K]
OH THANKS A LOT AND ITS 11
5 0
3 years ago
Read 2 more answers
Other questions:
  • Which box-and-whisker plot represents the data set?<br><br> 11, 6, 19, 14, 21, 7, 13, 15, 15
    7·1 answer
  • What is f(x) - g(x)?
    8·1 answer
  • What is the value of x in the equation −x = 4 − 3x + 6?<br><br> 5<br><br> 10<br><br> −5<br><br> −10
    11·1 answer
  • How to find the domain of a function
    14·1 answer
  • CDuc has a trapezoid shaped section of his yard fenced off for his pets. The lengths of the parallel sides of the trapezoid are
    14·2 answers
  • I need help with this.
    12·1 answer
  • Brett has a $30 online gift certificate. He plans to buy as many books as he can. The cost of each book is $4. There is also a s
    13·1 answer
  • Answer quickly thank you so much!!!!!!!!!!!!!!!!!!!!!
    10·1 answer
  • Rotating Lines
    11·1 answer
  • A spinner is spun 20 times, and the number of times the arrow lands
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!