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
Finger [1]
3 years ago
10

15a^2 + 14a -8 use A.C method

Mathematics
1 answer:
bekas [8.4K]3 years ago
8 0
Hello there!

A C method : you multiply the A and C -> find the factors of AC that can add                          up to B. (a² + bx + c)

15a² + 14a - 8

you multiply 15 and -8 = -120
Find the two factors of -120 that adds up to 14.
We could used 20 and -6.
So we can split the original equation to this:

15a² + 20a - 6a - 8
Now, we use grouping method.
Let's group 15a² + 20a  and -6a - 8.

15a² + 20a can be factored like this :
5a(3a + 4)

-6a - 8 can be factored like this :
-2(3a + 4)

So it is 5a(3a + 4) × -2(3a + 4)
We can simplify this into this :
(5a - 2)(3a + 4)


So your final answer is (5a - 2)(3a + 4).
Hope this helped! :)
You might be interested in
Officer Brimberry wrote 32 tickets for traffic violations last week, but only 12 tickets this week. What is the percent decrease
kolbaska11 [484]

Answer:

62.5 %

Step-by-step explanation:

you have to subtract 32-12, which equals 20

then divide 20 by the original amount (20/32)

20/32= .625, then you have to multiply to get the final answer...hope this helped!

4 0
2 years ago
Find the missing term. <br> Picture attached. Helppp
3241004551 [841]

Idk lol I’m just writing this for the 100% sorry

5 0
3 years ago
Read 2 more answers
What is the value of 5n-3 when n=5?
joja [24]

Answer:

22

Step-by-step explanation:

We are given the expression:—

\displaystyle \large{5n-3}

When n = 5, substitute/change n to 5:—

\displaystyle \large{5(5)-3}

Evaluate:—

\displaystyle \large{25-3=\boxed{22}}

__________________________________________________________

<u>Summary</u>

  <u>Substitution</u>

Changing or replacing from a term to another terms/expression is called substitution.

Examples:—

If we are given the expression \displaystyle \large{2y-1} and we want to find the value when y = 4, simply replace y-term to 4.

\displaystyle \large{2(4)-1=8-1=\boxed{7}}

__________________________________________________________

If you have any doubts regarding my answer/explanation, do not hesitate to ask in comment!

8 0
2 years ago
HELP PLS PLS I BEG U GEOMETRY AREA OF SECTOR
MAVERICK [17]

Answer:

The area of shaded sector

Formula A = (θ / 360°) × πr²

θ=360°-140°=220°

r=18yd

We have A=(220/360)×3.14×(18)²

=621.72yd²

Area of sector is621.72yd².

6 0
2 years ago
Read 2 more answers
Which statements are true according to the order of operations?
SVEN [57.7K]
To solve these you have to follow the orders of operation(BEDMAS), which means brackets, exponents, division, multiplication, addition, subtraction all in that order. 
A) This is false. 7x6+4=46 and does not equal 7x10 or 70.
B) This is false as well. The answer haste be 19 and 16-(4+7) does not equal 19. You add up what is in the brackets first and then subtract.
This means that C and D have to be true. 
C) 10+(6/3)=12
10+2=12 True
D) 2+5x7=37
2+35=37
Also true
8 0
3 years ago
Read 2 more answers
Other questions:
  • NEED HELP FAST!!!
    5·1 answer
  • Write a function rule for the table.
    13·2 answers
  • Any number that is divisible by 4 is also divisible by 8. Find a counterexample to show that the conjecture is false. 12 40 26 2
    8·1 answer
  • How many frogs in the population do not have spots on their back
    14·1 answer
  • Three bananas cost $.99 at this rate how much do five bananas cost
    8·1 answer
  • I need help with this ASAP PLZ!!!!!!!!
    8·1 answer
  • Solve each system by substitution.
    5·1 answer
  • Can yall help me with this!!
    13·1 answer
  • If 10 tickets to the movies cost $55, how much would 4 tickets cost?
    7·1 answer
  • Find the coordinates that will make this equation true? PLEASE HELP!!!
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!