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
SOVA2 [1]
3 years ago
13

I need help on 25. I know the answer is 2a but I need to see the work. Please help I’ve tried so many possibilities.

Mathematics
2 answers:
valkas [14]3 years ago
7 0

a(2a-3(1-a))+5(a-a^2)

distribute the inner most parenthesis

a( 2a -3+3a))+5(a-a^2)

combine like terms

a(5a-3) +5(a-a^2)

distribute both sets of parenthesis

5a^2 -3a +5a-5a^2

combine like terms

5a^2-5a^2 -3a+5a

2a

mamaluj [8]3 years ago
3 0

Answer:

ans is 2a

Step-by-step explanation:

a[2a-3(1-a)] + 5(a-a^2)

=a{2a-3+3a] + 5a - 5a^2

=a[5a-3] + 5a - 5a^2

=5a^2 - 3a + 5a - 5a^2

=2a

You might be interested in
Solve for u.<br><br> 18 = - 6/5 u<br><br> Simplify your answer as much as possible .
zmey [24]
The answer is

u = -15, hope this helps!
5 0
3 years ago
Read 2 more answers
complete the concept map by naming the sampling that you have learned in this module then briefly discuss each
Dmitry [639]

In systematic sampling, individuals are selected at regular intervals from the sampling frame.

<h3>How to explain the sampling?</h3>

Stratified sampling- In this method, the population is first divided into subgroups (or strata) who all share a similar characteristic

<u>Clustered sampling.</u>- a clustered sample, subgroups of the population are used as the sampling unit, rather than individuals. The population is divided into subgroups, known as clusters, which are randomly selected to be included in the study

<u>Simple random sampling. </u>-In this case each individual is chosen entirely by chance and each member of the population has an equal chance, or probability, of being selected.

Quota sampling--This method of sampling is often used by market researchers. Interviewers are given a quota of subjects of a specified type to attempt to recruit.

Learn more about sampling on:

brainly.com/question/17831271

#SPJ1

6 0
2 years ago
A rectangular prism has a height of 5 yd and a square base with a side length of 8 yd. What is the surface area of the prism? A
pantera1 [17]
Positive the answer should be C.288yd2
8 0
3 years ago
Solve 8 + 3 = −13, for each step, identify the property used
Verizon [17]

Answer:

-2

Step-by-step explanation:

3 0
3 years ago
Circumference of a circle that has 5m
MrRa [10]

Answer:

15.7 i think disksksksk

5 0
3 years ago
Other questions:
  • Find f(-3) if f(x) = x 2.
    6·2 answers
  • Solve for x <br><br><br> PLEASE HELP NEEDED !!
    11·2 answers
  • Identify the surface with the given vector equation. r(u, v) = 2 sin(u) i + 5 cos(u) j + v k, 0 ≤ v ≤ 5 plane hyperbolic parabol
    5·1 answer
  • Can someone help me??
    6·1 answer
  • Create a proportion using the form %/100 = is/of = to represent the following word problem. 78% of what number is 42?
    9·2 answers
  • A shirt is on sale for 1 the original cost, what would be an equivalent decimal and
    9·2 answers
  • Why are teacher sometimes mean ._.
    11·1 answer
  • Write an recursive rule for the sequence 7,14,21,28
    7·1 answer
  • What is the quotient of (2x^(3)+3x^(2)+5x-4)/(x^(2) + x + 1 )?
    6·1 answer
  • Enter your answer in the provided box. what is the emf of a cell consisting of a pb2 / pb half-cell and a pt / h / h2 half-cell
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!