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
earnstyle [38]
2 years ago
10

HELP HELP WILL MARK BRAINLIEST

Mathematics
1 answer:
SashulF [63]2 years ago
4 0

Answer:

b. 10a³ - 11a - 3

Step-by-step explanation:

1. Expand 3(a³ - 2a - 5)

= 3a³ - 6a - 15

2. Add 7a³ - 5a + 12 and 3a³ - 6a - 15

7a³ + 3a³ = 10a³

-5a + -6a = -11a

12 + -15 = -3

3. Answer: b. 10a³ - 11a - 3

You might be interested in
What's 3 and 2 5ths plus 1 and 1 5ths
navik [9.2K]
3 and 2/5 turns into 17/5
1 and 1/5 turns into 6/5
17+6= 23
23/5 simplifies to 4 and 3/5
6 0
3 years ago
Read 2 more answers
Your friend has improved in his math class. On his first test he scored 50 points, and then he scored 53, 56, 59, and 62 points
emmainna [20.7K]

Answer:

Step-by-step explanation: I think you skip count by 50s or something like that. So, it has to be 64.

3 0
3 years ago
Find 2.2℅ of 18 2/11?
UNO [17]
The answer to ur question is 0.396
2.2% * 18 = 0.396
7 0
3 years ago
Read 2 more answers
Please Answer!
SCORPION-xisa [38]
4a-3

because 4(a-3) what’s in () can’t be done so you go to the next step in pemdas and multiply and then you write it out and your done
7 0
3 years ago
Read 2 more answers
In the following figure, triangle ABC and triangle DEF are similar. What is the value of x ? Triangle ABC and triangle DEF are s
Shtirlitz [24]
X = 25.5 mm.

Using the similarity statement given, that ΔABC ~ ΔDEF, we set up a proportion:

8.5/x = 4/12

Cross multiply:
4*x = 8.5*12
4x = 102

Divide both sides by 4:
4x/4 = 102/4
x = 25.5
7 0
3 years ago
Other questions:
  • Look at the picture help please
    12·1 answer
  • BRIANILEST!!!!Which lines are parallel? Check all that apply.
    11·2 answers
  • A billboard on level ground is supported by a brace as shown in the accompanying diagram the measure of angle is 15° greater tha
    15·1 answer
  • What is the distance between (8,1) and (9,1)?
    9·1 answer
  • What is 6 tens x 10=
    5·1 answer
  • M is at least 25 m_____25 options >
    10·2 answers
  • To factor 9x^2-16 you can first rewrite the expression as:
    15·1 answer
  • Please help me :( Due today
    11·1 answer
  • Cody's Cafe uses 1 7/10 bags of coffee every day. How many days will 6 4/5 bags of coffee last?
    11·1 answer
  • Bus Stop #2:
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!