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
inn [45]
3 years ago
7

Which expression is a factor of x² − 5x − 6?

Mathematics
1 answer:
7nadin3 [17]3 years ago
5 0

Answer:

C

Step-by-step explanation:

You might be interested in
Determine the domain and range of the relation {(3, 8), (3, 2), (5, 2), (6, 1), (9,1)} I don't understand domain and range. Help
VLD [36.1K]

Answer:

The domain is the first number in each set so like the domain is: 3,5,6,9

6 0
3 years ago
Use the parabola tool to graph the quadratic function y=-1? - 2.0 +8
Andreas93 [3]

Answer:

see explanation

Step-by-step explanation:

I don't have graphing facilities but can give you the vertex and 1 other point.

Given a parabola in standard form

y = ax² + bx + c ( a ≠ 0 )

Then the x- coordinate of the vertex is

x = - \frac{b}{2a}

y = - x² - 2x + 8 ← is in standard form

with a = - 1 and b = - 2 , then

x = - \frac{-2}{-2} = - 1

Substitute x = - 1 into the equation for corresponding value of y

y = - (- 1)² - 2(- 1) + 8 = - 1 + 2 + 8 = 9

vertex = (- 1, 9 )

To obtain another point substitute any value for x into the equation

x = 0 : y = 0 - 0 + 8 , then (0, 8 ) is a point on the graph

x = 2 : y = - (2)² - 2(2) + 8 = - 4 - 4 + 8 = 0  then (2, 0 ) is a point on the graph

3 0
3 years ago
Annual starting salaries for college graduates with degrees in business administration are generally expected to be between $10,
Andreyy89

Answer:

1) the planning value for the population standard deviation is 10,000

2)

a) Margin of error E = 500, n = 1536.64 ≈ 1537

b) Margin of error E = 200, n = 9604

c) Margin of error E = 100, n = 38416

3)

As we can see, sample size corresponding to margin of error of $100 is too large and may not be feasible.

Hence, I will not recommend trying to obtain the $100 margin of error in the present case.

Step-by-step explanation:

Given the data in the question;

1) Planning Value for the population standard deviation will be;

⇒ ( 50,000 - 10,000 ) / 4

= 40,000 / 4

σ = 10,000

Hence, the planning value for the population standard deviation is 10,000

2) how large a sample should be taken if the desired margin of error is;

we know that, n = [ (z_{\alpha /2 × σ ) / E ]²

given that confidence level = 95%, so z_{\alpha /2  = 1.96

Now,

a) Margin of error E = 500

n = [ (z_{\alpha /2 × σ ) / E ]²

n = [ ( 1.96 × 10000 ) / 500 ]²

n = [ 19600 / 500 ]²

n = 1536.64 ≈ 1537

b) Margin of error E = 200

n = [ (z_{\alpha /2 × σ ) / E ]²

n = [ ( 1.96 × 10000 ) / 200 ]²

n = [ 19600 / 200 ]²

n = 9604

c)  Margin of error E = 100

n = [ (z_{\alpha /2 × σ ) / E ]²

n = [ ( 1.96 × 10000 ) / 100 ]²

n = [ 19600 / 100 ]²

n = 38416

3) Would you recommend trying to obtain the $100 margin of error?

As we can see, sample size corresponding to margin of error of $100 is too large and may not be feasible.

Hence, I will not recommend trying to obtain the $100 margin of error in the present case.

7 0
2 years ago
Anybody Wanna talk? Im bored and kinda down ( This mite get taken down so dose anybody?
Brums [2.3K]

Answerscuse me this a school app i am T

Step-by-step explanation:

reporting

<h3>jk</h3>
8 0
2 years ago
Read 2 more answers
PLS HELP QUICK <br> Find the length of side x in simplest radical form with a rational denominator
Alja [10]

Answer:

x= \sqrt{6}

Step-by-step explanation:

you might need a calculator to get the answer but since it is a right triangle the legs of the triangle in this case x and the\sqrt{6} are the same length

3 0
3 years ago
Other questions:
  • The kitchen is 12’ x 14’ x 10 feet, how much will it cost to purchase vinyl floor at $8.80 a foot?
    8·2 answers
  • What is the product of (2p + 7)(3p2 + 4p – 3)?
    6·2 answers
  • A parallelogram has an area of 216.24 cm2
    6·2 answers
  • $500,3.75%,4 Months Use I=Prt
    5·1 answer
  • Greg reads 40 pages in 20 minutes. How many pages per minute does Greg read?
    9·2 answers
  • if rectangle ABCD was reflected over the y-axis, reflected over the x-axis, and rotated 180 degrees, where would point A lie. ​
    11·1 answer
  • Please send help Asap
    9·1 answer
  • Find the number of permutations of the first 12 letters taken 3 at a time.
    9·1 answer
  • The price of an item has been reduced by 95%. The original price was $93.
    15·2 answers
  • Please help! Will mark brainliest
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!