3 years ago

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

You might be interested in

A tree that grows 3 feet every 5 years is growing at a rate of year. feet per

jenyasd209 [6]

Answer:

A.0.6

0.6*5yrs=3feet a year

Step-by-step explanation:

8 0

2 years ago

Using arc length formula find s when r=24 and θ=π/2 48π 24π 12π

bulgar [2K]

Answer:

12π

Step-by-step explanation:

The formula for arc length is given as:

$s = \frac{\theta}{360\degree} \times 2\pi r$

Plug r = 24 and θ=π/2 in the above formula, we fi d:

$s = \frac{\frac{\pi}{2}}{360\degree} \times 2\pi \times 24\\\\s = \frac{\frac{\pi}{2}}{2 \pi} \times 48\pi\\\\s = \frac{\pi}{2\times 2 \pi} \times 48\pi \\\\s = \frac{\pi}{4\pi} \times 48\pi \\\\\huge \purple {\boxed{s = 12\pi}} \\$

6 0

3 years ago

Read 2 more answers

There are 4 students on a team for a relay race. How many teams can be made from 29 students?

Kaylis [27]

Answer:

7 teams, hoped this helped :)

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

What does 9 x 2/5 equal

fomenos

Answer:

3 3/5

Step-by-step explanation:

9/1*2/5=18/5

=3 3/5

3 0

3 years ago

Read 2 more answers

Podría alguien ayudarme, es para mañana.

Ludmilka [50]

Answer:..$.$!:

Step-by-step explanation:

5 0

3 years ago