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
77julia77 [94]
3 years ago
13

What is the factored form of x2 − 4x − 5?

Mathematics
2 answers:
faltersainse [42]3 years ago
6 0
When the coefficient in front of the x^2 term is 1 you can factor a quadratic by finding two numbers such that the sum is the coefficient infront of x and the product is c. So
a+b=-4 and ab=-5 notice that -5 and 1 are solutions since (-5)*1=-5 and 1-5=-4 so you can factor it as (x-5)(x+1).
k0ka [10]3 years ago
4 0
The answer would be D....
You might be interested in
[7 points] A sample of 78 anchor bolts was randomly selected and the shear strength (in kips) of each was measured, resulting in
vovangra [49]

Answer:

Step-by-step explanation:

We want to determine a 98% confidence interval to estimate the true mean shear strength of anchor bolts.

Number of sample, n = 78

Mean, u = 4.25

Standard deviation, s = 1.3

For a confidence level of 98%, the corresponding z value is 2.33.

We will apply the formula

Confidence interval

= mean ± z × standard deviation/√n

It becomes

4.25 ± 2.33 × 1.3/√78

= 4.25 ± 2.33 × 0.147

= 4.25 ± 0.34

The lower end of the confidence interval is 4.25 - 0.34 = 3.91

The upper end of the confidence interval is 4.25 + 0.34 = 4.59

b) the confidence interval would still be valid because the number of samples is large(> 30)

6 0
4 years ago
Write the equation of the line in slope-intercept form using y=mx+b​
soldi70 [24.7K]
Equation Answer: y= -2x -7
4 0
3 years ago
Read 2 more answers
I’m thinking of a number. The square of this number is the same as the number times 4. What could my number be?
seraphim [82]

Answer:

4

Step-by-step explanation:

4 squared equals 16 and 4 times 4 equals 16

3 0
3 years ago
Factor completely. 5x^2-20x+20=5x 2 −20x+20
Harman [31]

Step-by-step explanation:

5x^2 - 20x + 20 = 5x^2 - 20x + 20

5(x^2 - 4x + 4) = 5(x^2 - 4x + 4)

(5 + 5) (x^2 - 4x + 4)

5 0
3 years ago
Which equation could be used to solve the problem? Joan picked 4 bushels of apples in one hour. At that rate, how many bushels w
jeka94
Hello!

Unit rates can be written as ratios. In this case, we have 4 bushels in one hour, or 4:1. In eight hours, we can multiply like a fraction, multiplying both by eight to get eight hours.

Our final answer is B) 8·4.

I hope this helps!
3 0
3 years ago
Other questions:
  • HELP PLEASE!!!!Decide if the function is an exponential function. If it is, state the initial value and the base.
    11·1 answer
  • For the month of November in a certain​ city, 88​% of the days are cloudy. Also in the month of November in the same​ city, 54​%
    11·1 answer
  • A local statistician is interested in the proportion of high school students that drink coffee. Suppose that 20% of all high sch
    7·1 answer
  • Which of these expressions shows a correct way to set up the slope formula for the line that passes through the points (5, 0) an
    14·1 answer
  • Divide £72 into the ratio 4 : 5.
    14·1 answer
  • PLEASE HURRY!!!!!!!
    5·1 answer
  • Someone help me please.
    10·2 answers
  • Help pls look at the picture
    14·2 answers
  • A test is worth 140 points. Ten percent of those points are from one short-answer question. How many points is the short-answer
    15·1 answer
  • If k=<br> t-5k<br> and k= 4, what is the value of t?<br> A) -28<br> B) -12<br> C) 12<br> D) 28
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!