Y varies jointly as a and b and inversely as the square root of c. y equals 16y=16 when a equals 4 comma=4, b equals 5 commab=5, and c equals 25.c=25. Find y when a equals 5 comma=5, b equals 4 commab=4, and c equals 4.c=4. Find y when a equals 5 commaa=5, b equals 4 commab=4, and c equals 4.c=4.

y=40

Step-by-step explanation:

If y varies jointly as a and b

y∝ab

If y varies inversely as the square root of c

y∝

Combining the two

y∝

Introducing Variation Constant

y=16, When a=4, b=5, c=25

Therefore the equation connecting a. b and c is:

We are to determine y when a=5, b=4 and c=4

answer:

step-by-step explanation:

here, the total dishes = 10

dishes having meat = 3 ( chicken, meatloaf and hamburger )

thus, the probability of having meat on the chosen dishes = number of dishes having meat / total dishes

=

therefore, the probability of not having meat = 1- the probability of having meat on the chosen dishes

=

=

=

⇒ option b is correct.

94

step-by-step explanation:

average the numbers and use a variable to figure out the minimum to get a 90.

(79+94+91+92+x)/5=90

x = 94