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hram777 [196]
2 years ago
5

If p and q vary inversely and p is 4 when q is 30, determine q when p is equal to 10.

Mathematics
1 answer:
Sphinxa [80]2 years ago
4 0

answer:

q = 75

step-by-step explanation:

  • we can set up an proportion for this

when p = 4, q = 30

  • put this as a proportion so that this is one side
  • look at what i did

4 / 30 = 10 / x

4x = 300

x = 75

  • here i used x as q, therefore whatever x is, will be q

q = 75

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3 years ago
Three balls are packaged in a cylindrical container as shown below. The balls just touch the top, bottom, and the sides of the c
lord [1]

Answer:

a. 5177 cm³

b. 3,451 cm³

c. 67%

Step-by-step explanation:

Given:

Diameter of each ball (d) = 13 cm

Radius of the ball (r) = radius of the cylinder = ½(13) = 6.5 cm

Height of the cylinder (h) = the sum of the diameters of the 3 balls = 3(13) = 39 cm

a. Volume of cylinder = πr²h

Plug in the values

Volume of cylinder = π*6.5²*39 = 5176.56 ≈ 5177 cm³

b. Total volume of the three balls = 3(volume of 1 ball) = 3(volume of sphere) = 3(⁴/3πr³)

Plug in the value

Total volume of the 3 balls = 3(⁴/3*π*6.5³) = 3(1150.35) = 3,451.05 ≈ 3,451 cm³

c. % of volume of the container occupied by the 3 balls = total volume of the three balls / volume of cylinder × 100

Plug in the values

= 3,451/5177 × 100

= 66.6602279

≈ 67%

6 0
2 years ago
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GuDViN [60]

Answer:

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Answer:

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Step-by-step explanation:

6 0
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