Knowing that a is inversely proportional to b2 and when b=4 a is equal to 5, find the value of a when b=4/5

Mathematics

1 answer:

Flauer [41]3 years ago

8 0

Answer:

a = 16

Step-by-step explanation:

inversely proportional

y = k/x

a = k/b

5 = k/4

solve for k

multiply by 4 on each side

20 =k

a = 20b

if b = 4/5

a = 20 * 4/5

a = 16

You might be interested in

Original price is $16.45, markdown is 33%. The sales price is (only use numbers): $

brilliants [131]

Answer:

$11.02

Step-by-step explanation:

3 0

3 years ago

What is 8c squared + 7c

MariettaO [177]

(8c)^2+7c
(8c)^2=64c^2
so that..

64c^2+7c
factor out c
c(64c+7)

8 0

3 years ago

Explain why any of the four operations (+x +) placed between the two terms 5 and-3/(radical sign) 8 will result in an irrational

kompoz [17]

To answer this question we will have to understand the nature of $\sqrt{8}$ .

$\sqrt{8}$ can be rewritten as: $\sqrt{2\times 2\times 2} =2\sqrt{2}$ . Now, $\sqrt{2}$ is an irrational number and thus any of the four operations of addition, multiplication, subtraction or division placed anywhere between any of these terms will always result in an irrational number.