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
Shkiper50 [21]
3 years ago
6

30% of B-A=18% OF B+A THEN A:B?

Biology
1 answer:
dlinn [17]3 years ago
4 0

Answer:

1:4

Explanation:

30%= \frac{30}{100}

18%= \frac{18}{100}

<em>Rewrite the given information:</em>

\frac{30}{100} (B - A) =  \frac{18}{100}(B + A)

<em>Multiply by 100 throughout:</em>

30(B -A)= 18(B+A)

<em>Divide by 6 throughout,</em>

5(B -A)= 3(B +A)

<em>Expand</em>

5B -5A= 3B +3A

<em>Bring</em><em> </em><em>A</em><em> </em><em>terms</em><em> </em><em>to</em><em> </em><em>1</em><em> </em><em>side</em><em> </em><em>and</em><em> </em><em>B</em><em> </em><em>terms</em><em> </em><em>to</em><em> </em><em>another</em><em>:</em>

5B -3B= 5A +3A

<em>Simplify</em>

2B= 8A

<em>Divide by 2 throughout:</em>

B= 4A

Now, we have to find the ratio of A to B.

B= 4A

<em>Divide by 4 throughout:</em>

A = =  \frac{1}{4} B

<em>Divide by B on both sides:</em>

\frac{A}{B}  =  \frac{1}{4}

Thus, A:B= 1:4

You might be interested in
(64 points)
Mnenie [13.5K]

Hello,

Question:

Over time bacteria get used to anti bacterial medicine. Doing this can add symptoms and take away the easiest process of healing grout the human and destroying the bacteria.

Using complete sentences, explain how this speeds up the process of evolution in bacteria.

Answer:

Well, the reason medicine speeds up the evolution of bacteria because it needs to put the medicine ineffect for the vaccine to work properly. The faster it works the easier and less painful it will be for that person. Thats why when they go to hospitals they try to give treatment as fast and quickly as possible so there is no further damage. The medicine works almost instantly.

Edited Answer:

The reason bacteria can evolve faster because the DNA which is sharing which the evolution happen much faster, mostly because you don't have to rely on mutations.

6 0
2 years ago
Which of the following is not released by trees into the atmosphere?
lesya692 [45]
It should be Ozone, hope that helps.
Trees release CO2 which is Oxygen.
Plants release water vapor through Photosynthesis.
8 0
3 years ago
Read 2 more answers
What is a anatomical barrier
KengaRu [80]
Well first, your immune system has two main halves, innate and adaptive... the innate is the line of defense to fight off disease and bacteria, which is made up of anatomical barriers 
4 0
3 years ago
Read 2 more answers
Healthy soil depends on _______. a. the size of rock particles b. oxygen content c. moisture content d. all of the above
aivan3 [116]

d boiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii

4 0
3 years ago
Read 2 more answers
How is the process of stratigraphic correlation carried out?
Ilia_Sergeevich [38]

The process of matching up strata from a lot sites through the physical, other properties and analysis of chemical. While biostratigraphic dating a relative dating method that uses the associations of fossils in strata to analyze each layer's age approximately. C. by matching color from several sites across distances strata by chemical composition and is the answer.  

7 0
3 years ago
Read 2 more answers
Other questions:
  • How does exercise affect the balance of water and salt in the body?
    5·1 answer
  • No stripe on the head (H) is dominant, a black stripe on the head is recessive. If dad's genotype is Hh, what are the odds that
    10·1 answer
  • Identify the relationship between temperature and state change.
    12·1 answer
  • Describe the biological needs for cells to be surrounded by a membrane that is selectively permeable for different materials.
    6·1 answer
  • How does a mutation affect a gene? A. A mutation changes the sequence of DNA bases in a gene. B. A mutation creates the sequence
    13·2 answers
  • Suppose you were observing an organism through the microscope and noticed that it moved toward the bottom of the slide and then
    11·1 answer
  • A half filled shape represents that the individual is
    5·1 answer
  • Finish the sentence: The thyroid gland releases Hormones that control your________
    8·1 answer
  • Humidity describes water in which state of matter? Solid, liquid, gas, or all three?
    6·2 answers
  • What characteristic is common of developing countries? 5a
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!