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Agata [3.3K]
3 years ago
13

If a varies directly as b and a=3 when b=12, what is the value of a when b=18?

Mathematics
1 answer:
Zepler [3.9K]3 years ago
4 0

Answer:

a is proportional to b

a=kb

k is proportionality constant

k =a/b =3/12 =1/4

k=1/4 = a/b=a/18

1/4=a/18

a=18/4 =9/2 =4.5 answer

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A mural of Elvis Presley takes 56 days to complete by seven painters 28 volunteers join the team after the first six days how ma
denpristay [2]

Answer:

10 days

Step-by-step explanation:

We are given that

Each person takes 56 days

7 painters take time=56\times 7=392 painter days

In first 6 days , 7 painters take time=7\times 6=42painter days

After 6 days , 28 volunteers are added then,

Total persons=28+7=35

Now, remaining days=392-42=350

Therefore, number of days are required before the painting of the king of rock 'n' roll is completed=\frac{350}{35}=10days

Hence,10 more days are required before the painting of the king of rock 'n' roll is completed

6 0
3 years ago
Assume that ∠A  is an acute angle. If sin A = 0.994, use a calculator to find the measure of ∠A to two decimal places.   The mea
Sedbober [7]
Basically, you are looking for the ARC SINE of .994 which is
 83.72 Degrees
You could also use an online calculator:
http://www.1728.org/trigcalc.htm


8 0
3 years ago
AABC is isosceles.<br> AB = 3x - 4 and BC = 5x - 10.<br> AB = [?]
Schach [20]

If AB = BC then set up the equation 3x - 4 = 5x - 10

Subtract 3x.

-4 = 2x - 10

Add 10.

6 = 2x

Divide by 2.

3 = x

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3(3) - 4

9 - 4

5.

AB = 5

If AB is not equal to BC then this is not solvable.

But if they are I am sure AB = 5.

Hope this helps

4 0
3 years ago
WHO IS AN EXPERT IN LANGUAGE ARTS IF SO I NEED MAJOR HELP ASAP
Gre4nikov [31]
I’m RIGHT here how can I help, there is no photo.
3 0
3 years ago
Read 2 more answers
Which quantity is proportional to 90⁄2
scoundrel [369]

Answer:

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3. False

Step-by-step explanation:

4 0
3 years ago
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