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
Airida [17]
3 years ago
11

Factor completely x2 + 20x − 36.

Mathematics
1 answer:
Zielflug [23.3K]3 years ago
6 0

Answer:

Step-by-step explanation:

To do this, identify a, b, and c of the quadratic.

a = 1, b = 20, c = |-36|

Find a*c.  That's 36.  Now find the factors of 36 and the 2 factors that can combine to give you b, which is 20, are the ones we want.

36: 1, 36

     2, 18

     3, 12

     4, 9

      6, 6

The ones that combine to give you 20 are 2, 18.  Both positive.  Therefore,

x^2+18x+2x-36 is how you begin to factor.  Factoring by grouping is the way to go.

(x^2+18x)+(2x-36)

Factor out what you can from each set of parenthesis:

x(x + 18) + 2(x + 18)

What's common now is what's inside the parenthesis, so that gets factored out:

(x + 18)(x + 2)

That's factored completely!

You might be interested in
Helpppppppppppppppppp pls​
BartSMP [9]

Answer:

b=30

Step-by-step explanation:

The angle here is a right angle which is an angle that equals 90 degrees. You subtract that measure of the angle by 60 and you end up with 30.

7 0
3 years ago
Kimi and Jordan are each working during the summer to earn money in addition to
cluponka [151]

Their earnings would be the same after 4 hours

Let the number of hours be x, and the weekly earning be y

So, the given parameters are:

<u>Kimi</u>

  • Earnings = $9 per hour
  • Weekly allowance = $8

So, the equation for Kimi's weekly earning is:

y =9x + 8

<u />

<u>Jordan</u>

  • Earnings = $7 per hour
  • Weekly allowance = $16

So, the equation for Jordan's weekly earning is:

y = 7x + 16

Equate both equations

7x + 16 = 9x + 8

Collect like terms

9x - 7x = 16 - 8

2x =8

Divide both sides by 2

x =4

Hence, their earnings would be the same after 4 hours

Read more about linear equations at:

brainly.com/question/13729904

7 0
2 years ago
What is the Improper Fraction for this number??? 1 3/4
ohaa [14]

Answer:

7/4

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
How do you graph -3.5 and -1.5 on the number line?​
Mila [183]

Answer:

find where -3.5 and -1.5 would be on a number line from -5 to 5

Step-by-step explanation:

-5 -4 -3 -2 -1 0 1 2 3 4 5

     -3.5   -1.5

-3.5 would be in between -4 and -3

-1.5 would be in between -2 and -1

6 0
3 years ago
Mrs.Walker would like to give each of her 32 students no less than three stickers. How many stickers must she have
Akimi4 [234]

Answer:

um my last name walker

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Other questions:
  • In a car race, for every mile covered by car A, car B covered 4 miles. The ratio of the number of miles covered by car A to the
    11·1 answer
  • Find the quotient...<br><br> 3/11 divided by 9/13<br><br> Simplify your answer...
    6·2 answers
  • the parking lot has five rows there are 10 parking spaces in the truck how many parking spaces are in the lot
    12·1 answer
  • The price of an item has been reduced by $4.59. The new sale price is $60.33. What was the original price ?
    15·2 answers
  • Yall are doing great thanks sm for the help
    10·1 answer
  • -8(4+9x)=7(-2-11x)<br> please help me solve this i have no clue and this is my math homework
    15·1 answer
  • The length of a rectangular park is 20 feet longer than the width of the park. If the lenght of the park is 36 feet, what is the
    8·1 answer
  • PLEASE HELP!!!!!!!!!!
    5·1 answer
  • When comparing multiple categories from different populations, a       can be used.
    6·1 answer
  • Find the area of each sector. Round your answers to the nearest tenth. ​
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!