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2 years ago

10

In a football league, 4 coaches are needed for every 38 players. If 84 players sign up for softball, how many coaches are needed

?

1 answer:

pickupchik [31]2 years ago

6 0

9

8.842 but the answer would have to be rounded because you can’t have .842 coaches... the answers 9!!!!

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Find the volume of the composite solid. Round your answer to the nearest tenth.

beks73 [17]

Answer:

The answer is 646 cm³.

Step-by-step explanation:

Firstly you have to seperate the solid into 2 shaoes, hemi-sphere and cube. Then calculate the volumes using the formula.

Given that the diameter of cube is 8cm so the radius is 8÷2 = 4cm :

Sphere,

$v = \frac{2}{3} \times \pi \times {r}^{3}$

Let r = 4 cm,

$v = \frac{2}{3} \times\pi \times {4}^{3}$

$v = \frac{2}{3} \times \pi \times 64$

$v = \frac{128}{3} \pi \: \: {cm}^{3}$

Cube,

$v = l \times w \times h$

Let length be 8cm,

Let width be 8 cm,

Let height be 8 cm,

$v = 8 \times 8 \times 8$

$v = 512 \: \: \: {cm}^{3}$

Lastly, you have to add up both volumes together :

$v = \frac{128}{3} \pi + 512$

$v = 646 \: {cm}^{3} \: (near.tenth)$

3 0

3 years ago

Evaluate the expression

GaryK [48]

This is what you get when you multiply out the equation:

7 $7^{2} +15.6-8.4$

6 0

3 years ago

Read 2 more answers

2 pounds of grapes cost $8 How do they cost per pound? How many pounds of grapes do you get per dollar?

stiks02 [169]

Answer:

$4 per pound and 0.25 pounds per dollar

Step-by-step explanation:

48 divided by 2 = $4

1 divided by 4 = 0.25

4 0

3 years ago

Mr. Ramirez gave his class

Angelina_Jolie [31]

Answer:

38 pages per hour

Step-by-step explanation:

Rate of reading = $\frac{\text{Total number of pages read by Davida}}{\text{Time taken to read}}$

By substituting the given values in the question,

Total number of pages read by Davida = $28\frac{1}{2}$ = $\frac{57}{2}$

Time taken by Davida = 45 minutes

Since, 1 minute = $\frac{1}{60}$ hours

Therefore, 45 minutes = $\frac{45}{60}=\frac{3}{4}$ hours

Rate of reading = $\frac{\frac{57}{2}}{\frac{3}{4} }$

= $\frac{57}{2}\times \frac{4}{3}$

= 38 pages per hour

Therefore, rate of reading by Davida is 38 pages per hour.

6 0

3 years ago

Help please with work

Dmitrij [34]

Answer:

200.96 ft²

Step-by-step explanation:

The question is on surface area of a closed cylinder

Formulae= SA=2 ×pi× r² + 2×pi×r×h

Where pi=3.14

SA= 2×3.14×2² + 2×3.14×2×14

SA=25.12+175.84

SA=200.96 ft²

4 0

3 years ago