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
lara31 [8.8K]
2 years ago
10

A is directly proportional to B when A = 12, B = 3 a) find a formula for A in terms of B b) find the value of A when B = 5 c) fi

nd the value of B when A = 36
Mathematics
1 answer:
marysya [2.9K]2 years ago
3 0

Answer:

a) A = kB

b) 20

c) 9

Step-by-step explanation:

A is directly proportional to B when A = 12, B = 3

a) find a formula for A in terms of B

A ∝ B

A = kB

Where k is constant of proportionality

when A = 12, B = 3

12 = 3k

k = 12/3

k = 4

b) find the value of A when B = 5

A = kB

k = 4

A = 4 × 5

A = 20

c) find the value of B when A = 36

k = 4

A = kB

B = A/k

B = 36/4

B = 9

You might be interested in
Find the common difference for the sequence shown 1/4,5/16,3/8
Vladimir79 [104]
<span>common difference for the sequence = 1/16

cause
1/4 = 4/16
and
3/8 = 6/16

so
4/16 + 1/16 = 5/16
5/16 + 1/16 = 6/16

</span>
4 0
3 years ago
Find three solutions of the equation y = 9x - 4.
Darina [25.2K]
First one; substitute x into the equation and see if the result equal y in the coordinate 
7 0
3 years ago
in a circle a 60 sector has an area of 25 pi square feet. what is the circumference? leave your answer in terms of pi and in sim
belka [17]
The area of the sector is given by the equation,
                           A = πr²(x / 360°)
where x is the number of degrees in the figure. 
                           25π ft² = (πr²)(60/360)
The value of  r is 12.25 ft. Then, we use this value to calculate for the circumference of the sector. 
                           C = 2πr(x/360)
Substituting,
                              C = 2π(12.45)(60/360)
                                   C = 12.83 ft³
7 0
3 years ago
3x3-5/5x6+19 i don’t know what I’m don’t wrong
KonstantinChe [14]

Hi there!

For these two equations, we would be using PEMDAS...

3·3=9-5=4

5·6=30+19=49

Hope this helps!

4 0
3 years ago
could someone help with the steps! In a survey conducted in an office, 60% of the sample respondents agreed that employees shoul
Ira Lisetskai [31]
58%-62%
just add 2 to 60 
and subtract 2 from 60 to find the range of percents
5 0
3 years ago
Read 2 more answers
Other questions:
  • !!!TIME LIMIT PLZ HURRY!!!Which describes the relationship between &lt;1 and &lt;2?
    14·2 answers
  • Suppose both the mean and median of a distribution are 12. Which of these statements is true about the mode of the distribution?
    7·2 answers
  • (Don't look at the bottom part)
    9·2 answers
  • Which graph represents an exponential function?
    9·1 answer
  • <img src="https://tex.z-dn.net/?f=obtain%20the%20fourier%20expansion%20for%20sin%20ax%20in%20the%20interval%20-%20%7C%20%20%20%5
    15·1 answer
  • Edgar earns $13 for each hour of yard work. How many hours in all will it take Edgar to earn $39? hours​
    11·1 answer
  • Can you guys help me please<br><br> simplify:<br> (4a^2b^3c^5)^3
    7·1 answer
  • Simplify the problem thank you
    11·2 answers
  • WILL GIVE BRAINLIEST!!
    15·2 answers
  • What is 453,605 rounded to the nearest thousand
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!