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Vladimir79 [104]
2 years ago
11

Solve using the appropriate formula. Substitute 3.14 for π. Hint: Circle: A = πr2 Find the area of a circle with a radius of 4 c

m.
Mathematics
2 answers:
arsen [322]2 years ago
8 0

Answer:

The area of a circle is [tex]\pir^{2}[\tex] and the radius is 4 so we have 16π and substituting 3.14 for pi we get 50.24 .

Hope this helps!

valentina_108 [34]2 years ago
6 0

Answer:

10.2 cm squared

Step-by-step explanation:

got it right on edg 2021

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Matthew plays basketball for his high school. On average, he scores 33 points per game, with a standard deviation of 2 points. W
Lera25 [3.4K]
<h3>Answer: Choice B</h3>

Matthew will score less than 27 points in about 0.15% of his basketball games.

=======================================================

Explanation:

mu = 33 = population mean

sigma = 2 = population standard deviation

Let's find the z score when x = 27

z = (x - mu)/sigma

z = (27-33)/2

z = -6/2

z = -3

A score of 27 points is exactly three standard deviation units below the mean of 33 points.

Now refer to the Empirical Rule chart shown below. Notice that roughly 99.7% of the entire population is within 3 standard deviations of the mean. This is the span from z = -3 to z = 3.

That leaves about 100% - 99.7% = 0.3% left over for the two tails combined.

One tail has about (0.3%)/2 = 0.15% of the total area, and therefor about 0.15% of the total games will have Matthew scoring less than 27 points. This is an estimate of course.

To get a more accurate answer, you can use a Z table to find that

P(Z < -3) \approx 0.00135 \approx 0.135\%

which isn't too far off from the 0.15%

3 0
2 years ago
Read 2 more answers
Ratios and Scale Worksheet #1. What does it mean when a map of a park says its scale is 1 to 50? #2. If a pathway in this same p
Free_Kalibri [48]

Answer:

1. This means that the actual park size is 50 times larger than the size of the park on the map.

2. If a pathway is 7 inches long on the map, it will be 50 times larger in real life;

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3. 1 foot is 12 inches so 350 inches will be;

= 350/12

= 29.2 feet

4. The real life length of the car is;

= 5 * 67

= 335 inches

5. The real life length in feet is;

= 335/12

= 27.9 feet

6. Speed = Distance / time

The time should be converted to hours;

= 10/60 minutes

= 1/6

Speed = 9 / (1/6)

= 54 miles per hour

= 54 mph

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2 years ago
Solve the perimeter formula of a rectangle for w and use the resulting formula to find the width of a rectangle with a length of
dusya [7]

Answer:

Step-by-step explanation:w=1cm

5 0
3 years ago
What is the length of the major axis of the conic section shown below?
sveticcg [70]

\dfrac{(x-2)^2}{49}+\dfrac{(y+5)^2}{36}=1

The equation of a elipse:

\dfrac{x^2}{a^2}+\dfrac{y^2}{b^2}=1

The length of the major axis is equal 2a if a > b or 2b if b > a.

We have

a^2=49\to a=\sqrt{49}=7\\\\b^2=36\to b=\sqrt{36}=6\\\\a > b

therefore the length of the major axis is equal 2 · 7 = 14.

7 0
3 years ago
The formula for the volume of a cube is V = s3, where s is the length of each side. What is the volume of a cube if each side me
Whitepunk [10]
The answer is 1






HHOPE THIS HELPS!!!!!!!
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3 years ago
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