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2 years ago

11

a balloon is released from the top of a 75 foot building. The balloon rises at a rate of 2 feet per second. Which equation descr

ibes the height of the balloon, h, after s seconds?

1 answer:

melomori [17]2 years ago

8 0

2 x s will help you find out how many feet it is above the building.

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Shobo's mother's present age is six times Shobo's present age. Shobo's age five

il63 [147K]

Answer:

Step-by-step explanation:

Shobo's age = x years

His mother's age = 6 times of

Shobo's age

= 6x years

Five years from now

________________

Shobo's age = ( x + 5 ) years

According to the problem given,

x + 5 = one by third of his mother's

present age

x + 5 = 6x / 3

x + 5 = 2x

5 = 2x - x

5 = x

Therefore ,

Shobo's present age = x = 5 years

His mother's age = 6x

= 6 × 5

= 30 years

4 0

2 years ago

Use the formula C = 2πr and π= 3.14 to find the circumference of a circle with a radius of 5 meters.

professor190 [17]

Solution D

Just put into a calculator

Hope I helped :)

7 0

3 years ago

The same player is going to play the game 200 times consecutively. How many black balls should he expect to pick

DerKrebs [107]

Answer:

200

Step-by-step explanation:

It is given that the same player is going to play a game one after another continuously about 200 times. During the game the player is going to pick up black color balls.

If the player picks at least one black color ball at one time of the game, therefore, the probability of the number of black balls that the player is going to pick is 200 balls.

8 0

3 years ago

Football team play $28 per jersey. They bought 16 jerseys. How much money did the team spend on jerseys

yaroslaw [1]

If they pay $28 for 16 jerseys then the total they’d have to play is $448

28 x 16 = 448

Hope this helps :)

5 0

3 years ago

The average expenditure on Valentine's Day was expected to be$100.89 (USA Today, February 13, 2006). Do male and femaleconsumers

stealth61 [152]

Answer:

(a) $62.16

(b) Male: $15.00

Female: $10.06

(c) Confidence Interval for male expenditure is ($106.40, $136.40)

Confidence interval for female expenditure is ($49.18, $69.30)

Step-by-step explanation:

(a) Male expenditure

Sample mean = $135.67, sd=$35, n=40, Z=2.576

Population mean = sample mean - (Z×sd)/√n = 135.67 - (2.576×35)/√40 = 135.67 - 14.27 = $121.40

Female expenditure

Sample mean= $68.64, sd=$20, n=30, Z=2.576

Population mean = 68.64 - (2.576×20)/√30 = 68.64 - 9.40 = $59.24

$121.40 - $59.24 = $62.16

(b) Male: Error margin = (t-value × sd)/√n

Degree of freedom = n-1 = 40-1= 39. t-value corresponding to 39 degrees of freedom and 99% confidence level is 2.708

Error margin = (2.708×35)/√40 = 94.78/6.32 = $15.00

Female

Degrees of freedom = n-1 = 30-1 = 29. t-value is 2.756

Error margin = (2.756×20)/√30 = 55.12/5.48 = $10.06

(c) Male

Confidence Interval (CI) = (mean + or - error margin)

CI = 121.4 + 15.00 = $136.40

CI = 121.4 - 15.00 = $106.40

Confidence Interval is ($106.40, $136.40)

Female

CI = 59.24 + 10.06 = $69.30

CI = 59.24 - 10.06 = $49.18

Confidence Interval is ($49.18, $69.30)

7 0

3 years ago