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
uranmaximum [27]
4 years ago
9

If a = kb where k is a constant and a = 12 when b = 15, what is the value of a when b =12?

Mathematics
1 answer:
LUCKY_DIMON [66]4 years ago
4 0
A = kb

12 = k15
divide equation by 15 to make k the subject.
k = 4/5 or 0.8

a = kb
a = 0.8 x 12
a = 9.6

(0.6 as a fraction is 3/5)

therefore, a = 9 and 3/5


You might be interested in
A test worth 125 points has 49 questions on it. Multiple Choice questions are worth 2 points each and short answer questions are
Charra [1.4K]

Answer:

There were 40 2-point questions and 9 3-point questions.

Step-by-step explanation:

To solve this situation, write two equations. One for the number of questions and one for the number of points.

Let x be the number of 2 point questions.

Let y be the number of 5 point questions.

x + y = 49

Now since x are each worth 2 points, the total points is 2x.

And since y are each worth 5 points, the total points is 5y.

So 2x + 5y = 125. Substitute one of the equations into the other to solve for the variables.

x + y = 49 becomes x = 49 - y. Substitute it.

2(49-y) + 5y = 125

98 - 2y + 5y = 125

98 + 3y = 125

3y = 27

y = 9

Substitute y = 9 back into the equation x = 49 - y to find x.

x = 49 - 9

x = 40

5 0
3 years ago
In 2007, the FDIC’s insurance limit was $100,000 per person per bank. Approximately 62% of Gil’s deposits were insured by the FD
vfiekz [6]
<span>The answer is Letter D - A $108,000 savings account and $46,000 CD at Bank T; a $36,000 money market account and $38,000 CD at Bank U; a $63,000 checking account, $80,000 savings account, and $70,000 money market account at Bank V

Your money is much safer in an FDIC bank. Money market accounts are protected by FDIC.</span>
5 0
4 years ago
Read 2 more answers
At 6 p.m., the temperature was 11°C 11°C. By midnight, the temperature was −3°C.-3°C.What is the difference between the two temp
zlopas [31]

Answer:

it's B

Step-by-step explanation:

14

5 0
4 years ago
Read 2 more answers
In a small library, there are 5 nonfiction books for every 9 fiction books. There are 130 nonfiction books. How many fiction boo
cestrela7 [59]

Answer:

234 fiction books

Step-by-step explanation:

4 0
3 years ago
If one apple costs $2, how many apples is $12?​
LiRa [457]

Answer:

6 apples because

Step-by-step explanation:

12÷2=6

4 0
3 years ago
Read 2 more answers
Other questions:
  • PLEASE help! 5. Given that side A and side E are of equal length, find a positive value for x. Show all work.
    13·1 answer
  • Use the definition of continuity and the properties of limits to show that the function h(x)=x+3/(x2-x-1)(x2+1) is continuous at
    8·1 answer
  • What is 32.5 percent in a simplest form
    5·1 answer
  • Help needed asap!!,.........
    7·1 answer
  • I need help please....
    14·1 answer
  • Select two ratios that are equivalent to 2:5<br><br> Choose 2 answers.
    8·2 answers
  • In ΔPQR, the measure of ∠R=90°, the measure of ∠Q=38°, and RP = 72 feet. Find the length of PQ to the nearest tenth of a foot.
    13·1 answer
  • Each exterior angle of a regular n-gon has a measure of 9º. How many sides does the polygon have?
    6·2 answers
  • 7 freinds to a party if each freind will get 5 cookies and each box has 12 cookies how many boxes does shenika need to get
    10·2 answers
  • Rewrite 1/10,000 to the power of ten
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!