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
VMariaS [17]
3 years ago
7

Q is directly proportional to r. q is 76 when r is 20. work out q when r is 45.

Mathematics
2 answers:
pashok25 [27]3 years ago
8 0
Q α r
q=kr
thus
k=q/r
when r=20, q=76
hence
k=76/20=
q=76/20r
when r=45 the value of q will be:
q=76/20×45
q=171
tangare [24]3 years ago
5 0

Answer:

q=171

Step-by-step explanation:

Hello there!

In this explanation k is constant and it means that q is some constant amount bigger than r.

q=kr

76=k×20

76÷20=k  

k= 3.8

q=3.8r

q=3.8×45

q=171

You might be interested in
A Walgreens purchase comes to $28. Find the total cost if a 2% sales tax is included.
OverLord2011 [107]

Answer:

The answer is $28.56

Step-by-step explanation:

To find the 2% sales tax, you need to multiply the 2% or 0.02 by 28.

Doing this will give you 0.56.

Then you add 0.56 to 28 to get 28.56, hence, $28.56 is the total cost.

Hope it helps!

4 0
3 years ago
Find A-B.<br> Help me please
Softa [21]
I’m not sure but since no one else commented I would think it’s D, I think you take the first number like 6 for a and subtract the first number for b like 3
8 0
2 years ago
Help please! I don’t know how to do this.
Akimi4 [234]
... I don’t either... hold on lemme try I will be back soon I’m doing the problem
5 0
3 years ago
Jerome's credit card has an APR of 18%, calculated on the previous monthly balance, and a minimum payment of 2%, starting the mo
galben [10]

Answer:

195.54

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
HELP ASAP WILL GIVE BRAINLEST
blondinia [14]

Answer: d-9

Step-by-step explanation: d equals the savings so it says she spent four dollars and then five, so just add those and subtract it from the savings

5 0
3 years ago
Read 2 more answers
Other questions:
  • 20 pts!!!!!!!!!
    7·2 answers
  • Please help me with this :)
    8·1 answer
  • Determine whether the following is a statistical question. How many teeth does Edna have in her mouth?
    12·2 answers
  • Please help Identify the domain of the function shown in the graph. A. 0 ≤ x ≤ 5 B. x is all real numbers. C. –5 ≤ x ≤ 5 D. x &g
    14·1 answer
  • Help please, I'll give brainliest to the first correct answer​
    5·1 answer
  • Find the constant rate of change (CROC):<br> x=1, 2, 3, 4, 5<br> y=4, 8, 12, 16, 20
    6·1 answer
  • Pls give an actuel answer to this question. Thx :). WIll give brainest.
    8·2 answers
  • Help me answer the question ​
    12·2 answers
  • Help on this question…
    10·1 answer
  • The net below depicts a triangular prism. What is the total surface area of the prism? And please explain how did you get your a
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!