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3 years ago

I might kinda go to summer school so help?

Mathematics

2 answers:

bearhunter [10]3 years ago

8 0

Answer:

I think it is A

Step-by-step explanation:

ust remember to divide the diameter by two to get the radius. If you were asked to find the radius instead of the diameter.

timofeeve [1]3 years ago

3 0

Your answer should be A

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What is the maximum height of the basketball when the player passes the ball to someone? Initially, the ball moves at a speed of

ZanzabumX [31]

Answer with explanation:

Since the motion of the ball is projectile motion we shall use the equations for projectile motion.

The maximum height achieved by the projectile is given by

$h_{max}=\frac{v_{o}^{2}sin^{2}(\theta )}{2g}$

Applying the values we get

$h_{max}=\frac{12^{2}\times sin^{2}(45)}{2\times 9.81}\\\\h_{max}=3.669m$

The range of the projectile is given by

$R=\frac{v_{o}^{2}sin(2\theta )}{2g}$

Applying values we get

$R=\frac{12^{2}\times sin(2\times 45 )}{2\times 9.81}\\\\R=7.339m$

thus the maximum horizontal distance reached by the ball equals 7.339 meters after which it bounces thus a person standing 8 meters away will not be able to catch it.

(The height of the players is not taken into account since no info is given about their height.)

3 0

4 years ago

of 320 consumers polled, some purchase blu-ray movies, some only purchase movies on dvd, and some do both. if 300 people polled

Helga [31]

Answer:

20 people only buy dvds.

Step-by-step explanation:

There are two groups in this problem. One group of people that buys dvds and one that buys blu rays. The total amount of people who buy blu rays is 300, but there's an intersection between the groups and the size of this is 280 people who actually buy both. In order to find out how many people only buy DVDs we first need to figure out how many only buy blu-rays. That is:

people who only buy blu rays = people who buy blu rays - people who buys blu rays and dvds

people who only buy blu rays = 300 - 280 = 20

We can now calculate the amount of people who only buy dvds and that is:

people who only buy dvds =total amount of people - ( people who only buy blu rays + people who buy both)

people who only buy dvds = 320 - (20 + 280) = 320 - 300 = 20 people

3 0

4 years ago

A random sample of harvested corn showed that 6% of the ears of corn picked were not edible. Approximately 2300 ears of corn wer

Ivenika [448]

Given:
6% of the random sample were not edible
2300 ears of corn were picked

Find number of those ears of corn that were not edible.

2,300 * 6% = 138

138 ears of corn were not edible.

3 0

4 years ago

The probability that an 80-year-old male in the U.S. will die within one year is approximately 0.069941. If an insurance company

barxatty [35]

Answer:

Step-by-step explanation:

Expected amount the insurance company will pay= 0.069941*12000=839.292

Expected amount the insurance company will make= 445-839.292= -394.292= -394.29

8 0

3 years ago

Rising balloon. A hot air balloon rises straight up at a rate of 120 ft per min. The balloon is tracked from a rangefinder on th

lesya [120]

Given

balloon rises straight up at a rate of 120 ft per min.

balloon is tracked from a rangefinder on the ground at point p, which is 400 ft from the release point q of the balloon.

d = the distance from the balloon to the rangefinder and t= the time in mins

Express d as a function of t.

To proof = With the help the diagram as shown in below .

balloon rises straight up at a rate of 120 ft per min.

thus RQ = 120t

rangefinder on the ground at point p, which is 400 ft from the release point q of the balloon.

thus PQ = 400 ft

Let PR =d

by using the pythagoras theorem

we have

RQ² + PQ² = PR²

now putting the value

we have

(120t)² + 400² = d²

$\sqrt{120t^{2} + 400^{2}}$ = d

$\sqrt{14400t^{2} + 160000 }$ = d

$\sqrt{1600(9t^{2} + 100) }$ = d

$d=40\sqrt{9t^{2} + 100}$ ft

hence d is express in the term of t

Hence proved

8 0

3 years ago