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3 years ago

I need help with number 2 please.

Mathematics

1 answer:

Vedmedyk [2.9K]3 years ago

8 0

The answer is 73.33333333 (repeated). You can also write it as 73 or 73.3 with a line over the 3 (after the decimal point) to indicate it being repeated.

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A population proportion is 0.57. Suppose a random sample of 657 items is sampled randomly from this population.

leonid [27]

I don’t know but I’ll say letter e

5 0

2 years ago

Subtract.<br> (5x4+ 3x3 - 6) - (8x2 – 3x+5)

Savatey [412]

Answer:

5x^4+3x^3-8x^2+3x-11

Step-by-step explanation:

(5x^4+ 3x^3 - 6) - (8x^2 – 3x+5)

Distribute the minus sign

(5x^4+ 3x^3 - 6) - 8x^2 + 3x-5

Combine like terms

5x^4+3x^3-8x^2+3x-11

6 0

3 years ago

Read 2 more answers

3. How many people preferred WCLM?

Nady [450]

Answer:

Step-by-step explanation:

3)Total no of people surveyed = 400

Percentage of people preferred WCLM = 24%

Hence no of people who preferred WCLM = 24(400)/100

=96

3:4 =9:12 is true since when simplified both are equal

B is not right 2:1 cannot equal 1:2 as ratio is not commutative

c is not right as they are not equal when simplified

D is not right since when we divide left side by 9, we get 6:1

7 0

3 years ago

Read 2 more answers

A number of hockey player are standing evenly spaced in a circle. If the 4th player is opposite the 9th player. How many hockey

vfiekz [6]

You would do 9-4=5
so then it would need to be 10-5=5,6-1=5,7-2=5,8-3=5,9-4=5.
there is a difference of 5
there would be <u>10</u> hockey players

3 0

3 years ago

A pneumatic system is producing 75 lb/in2 of gauge pressure. A cylinder is needed to press an adhesive label onto a product. It

kolbaska11 [484]

The area of the cylinder required for a given pressure is directly

proportional to the applied force.

<h3>The correct response;</h3>

The required diameter of the cylinder is approximately <u>0.26 inches</u>

<h3>Method by which the diameter is found:</h3><h3>Given parameters;</h3>

The gauge pressure produced by the pneumatic system, P = 75 lb/in²

The force required to complete the given task, F = 4 lb.

<h3>Required parameter; </h3>

The diameter of the pneumatic cylinder.

<h3>Solution:</h3><h3>Derivation of the formula for area;</h3>

$\displaystyle Pressure, \, P = \mathbf{\frac{Force, \, F}{Area, \, A}}$

Therefore;

$\displaystyle Area, \, A= \mathbf{\frac{Force, \, F}{Pressure, \, P}}$

<h3>Plugging in the given values to determine the area of the cylinder;</h3>

$\displaystyle Area, \, A= \frac{4 \, lb}{75 \, lb/in^2} = \frac{4}{75} \, in.^2$

<h3>Determining the diameter of the cylinder;</h3>

A = π·r²

$\displaystyle r = \sqrt{ \frac{A}{\pi} }$

$\displaystyle r = \sqrt{\frac{4}{75 \cdot \pi} } \approx 0.13$

The required diameter, d = 2 × r

Therefore;

d ≈ 2 × 0.13 = 0.26

The required diameter, d ≈ <u>0.26 inches</u>

Learn more about the formula for pressure here:

brainly.com/question/13373498

8 0

1 year ago