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bekas [8.4K]
3 years ago
13

The size of a bicycle is determined by the diameter of the wheel. You want a 22-in bicycle for your birthday. What is the area o

f one of the wheels?
Mathematics
1 answer:
oksian1 [2.3K]3 years ago
6 0

Answer:

The Area of the bicycle wheel=380.182 square inch

Step-by-step explanation:

The formula for calculating the area of a wheel is given by;

A=(πd²)/4

A=Area of the wheel to be calculated

Where π (pie)=3.142,

The wheel size is usually denoted by its diameter (d)

d=diameter of the wheel=22 inches

with the values of π and d given, we can plug them in the formula for calculating Area to determine the area of the bicycle wheel

Substituting the values for π and d in the formula;

A=(πd²)/4=(3.142×22²)/4=380.182 in²

The Area of the bicycle wheel=380.182 in²

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A researcher would like to estimate p, the proportion of U.S. adults who support recognizing civil unions between gay or lesbian
SOVA2 [1]

Answer:

(b) 4,445

Step-by-step explanation:

If the researcher would like to be 95% sure that the obtained sample proportion would be within 1.5% of p (the proportion in the entire population of U.S. adults), what sample size should be used?

Given a=0.05, |Z(0.025)|=1.96 (check standard normal table)

So n=(Z/E)^2*p*(1-p)

=(1.96/0.015)^2*0.5*0.5

=4268.444

Take n=4269

Answer:(b) 4,445

3 0
3 years ago
HELP ON NUMBER 16 PLZ
8_murik_8 [283]

okay so what you're gonna do is find the lcm (least common multiple) of four and seven (the days y'all water the plants.)

lemme get it started for ya.

7: 7, 14, 21...

4: 4, 8, 12, 16...

and once you find a number that they both have, it's your answer.

8 0
2 years ago
The triangle shown in the diagram is going to be dilated by a scale factor of 1 3 . What is the length of the new side that corr
Rufina [12.5K]
What’s is side AB if I don’t have that I don’t know how to figure out how they correspond
3 0
3 years ago
Nicole is playing a video game where each round lasts \dfrac{7}{12} 12 7 ​ start fraction, 7, divided by, 12, end fraction of an
Harrizon [31]

Total number of hours she schduled to play the game = 3\frac{3}{4} hours.

Let us convert mixed fraction into improper fraction

3\frac{3}{4} = \frac{3*3+4}{4} = \frac{13}{4} \ hours.

Duration of each round = \frac{7}{12}.

In order to find the number of rounds Nicole can play, we need to divide total number of hours by duration of each round.

\frac{13}{4} ÷ \frac{7}{12}

Converting division sign into multiplication flips the second fraction.

=\frac{13}{4} \times \frac{12}{7}

Crossing out 12 by 4, we get 3 on the top of second fraction.

=\frac{13}{1} \times \frac{3}{7}

=\frac{39}{7}  = 5.57...( Approximately).

Because problem is about number of rounds.

So, total number of round would be 5.

5 0
3 years ago
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Someone help me asap math 10
Ghella [55]

Answer:

x ≈ 25.4 Km

Step-by-step explanation:

Using the tangent ratio in the right triangle on the right

tan54° = \frac{opposite}{adjacent} = \frac{opp}{17} ( multiply both sides by 17 )

17 × tan54° = opp , thus

opp ≈ 23.4

-------------------------------------------

Using the cosine ratio in the right triangle on the left

cos23° = \frac{adjacent}{hypotenuse} = \frac{23.4}{x} ( multiply both sides by x )

x × cos23° = 23.4 ( divide both sides by cos23° )

x = \frac{23.4}{cos23} ≈ 25. 4 Km ( to the nearest tenth )

6 0
3 years ago
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