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
Gre4nikov [31]
3 years ago
10

Factor this quadratic expression: a2 - 2a - 15

Mathematics
2 answers:
Mumz [18]3 years ago
8 0
A² - 2a - 15
= a² - 5a + 3a - 15
= a(a-5) + 3(a-5)
= (a-5)(a+3)



Sliva [168]3 years ago
7 0
A^2-2a-15

1. Ask: Which two numbers add up to -2 and multiply to -15?
-5 and 3

2. Rewrite the expression using the above
(a-5)(a+3)

Have a nice day :D
You might be interested in
At some department store, all suits are reduced 30% from the retail price. If a man purchased a suit that originally rera ec for
Arisa [49]

Answer:

$78.72

Step-by-step explanation:

To find 30% of the original value, we need to turn this percentage into a decimal or a fraction and then multiply it by the original value

  • 30% is equivalent to 0.30, \frac{30}{100}, and \frac{3}{10}
  • So we can use either of these values. I will use 0.30 for simplicity

  • ($262.40)(0.30) = $78.72 is the amount saved
5 0
4 years ago
What is the degree of the polynomial 2x3 - 3x2 + 4x + 5
tia_tia [17]
With polynomials the degree is the highest power x or whatever the variable is raised to. In this case, the degree is 3 since the highest power x is raised to is x^3
4 0
3 years ago
Nathan has 102 solid-colored disks that are red.
Alex787 [66]

Answer:

blue = 35

green = 29

red = 38

Step-by-step explanation:

Let r = red

Let g = green

let b = blue

r + g + b = 102

r = b + 3

b = g + 6    Subtract 6 from both sides of the equation

b - 6 = g

===================

substitute for red and green

(b + 3) + b + b - 6 = 102

b + 3 + b + b - 6 = 102

Combine like terms

3b - 3 = 102

Add 3 to both sides

3b - 3 + 3 = 102 + 3

3b = 105

Divide by 3

3b/3 = 105/3

b = 35

======================

r = b + 3

r = 35 + 3

r = 38

=======================

g = b - 6

g = 35 - 6

g = 29

========================

3 0
3 years ago
Read 2 more answers
Select the correct answer from each drop-down menu. A teacher is making a history test composed of the same number of multiple-c
GaryK [48]

Answer:

Step-by-step explanation:idbdhides by

7 0
3 years ago
A sandbox is being built in a park. The diagram shows the four vertices of the sandbox. Each unit in the
____ [38]

Answer:

the answer is 90 square feet.

Step-by-step explanation:

the length is 10, and the height is 9.

10×9=90

5 0
3 years ago
Other questions:
  • if a single six sided dice is rolled twice what is the probability the sum is greater than 5 if the first roll was a 3
    15·2 answers
  • What is 16+24 out of 30_22
    12·2 answers
  • The sound of thunder from a bolt of lightning was heard 2.6 seconds after the lightning hit,from 895 meter away.What was the spe
    14·1 answer
  • Find the nth term of this sequence -2 3 8 13 18
    14·1 answer
  • Which expression is equivalent? Please see pictures attached!
    9·1 answer
  • Kari bought 3 boxes of cookies to share with a book club. Each box contains 12 cookies. The expression represents the number of
    13·2 answers
  • The freezer contains vanilla and chocolate ice cream. Chocolate ice cream contains 12 servings less than vanilla. How many servi
    13·1 answer
  • If each small cube has a volume of 1 cm,
    10·1 answer
  • A) chaim used an invalid reason to justify the congruence of a pair of sides or angles.
    11·1 answer
  • –4.36 − 1.6g + 7.4 = 0.3g + 6.46
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!