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3 years ago

Pete slid a domino off a bridge and it took 2.3 seconds to hit the Gully below how many feet did the domino fall

1 answer:

Nadusha1986 [10]3 years ago

4 0

This distance can be computed by use of a formula; the distance fallen after a time of t seconds is given by the formula. where g is the acceleration of gravity (9.8 m/s/s on Earth). Since there is no information given aside from time, we'll use this formula d = 0.5gt^2<span>

</span> d = 0.5gt^2
d = 0.5 (9.8) (2.3^2)
d = 25.921 m convert to feet (1 m = 3.28084ft) = 85.0426509 = 85.043 feet

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If an airplane traveled 414 miles how fast did it travel in 3/4 of an hour?

Elenna [48]

Answer:

The issue needs you to calculate Claire's airplane's speed in miles per hour.

Claire's airplane travels at a speed of 552 miles per hour.

Given:

414 miles total distance traveled

Time allotted = 3/4 hour

Total distance traveled / Total time = Speed

= 414 miles per hour

414 4/3 = 414

= (414 4 / 3)

1656 / 3 =

equals 552 miles per hour

As a result, Claire's airplane's speed in miles per hour is 552 miles per hour.

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brainly.com/question/7042890

6 0

3 years ago

The data (1.5.8.5.1) represent a random sample of the number of days absent from school for five students at Monta Vista High. F

lianna [129]

Answer:

$\bar X = \frac{1+5+8+5+1}{5}= \frac{20}{5}= 4$

$\sigma= \sqrt{\frac{(1-4)^2 +(5-4)^2 +(8-4)^2 +(5-4)^2 +(1-4)^2}{5}} =\sqrt{\frac{36}{5}}= 2.68$

And based on this the best answer would be:

a. mean = 4; standard deviation = 2.68

Step-by-step explanation:

For this case we have the following data given:

1,5,8,5,1

We can find the sample mean with the following formula:

$\bar X = \frac{\sum_{i=1}^n X_i}{n}$

And replacing we got:

$\bar X = \frac{1+5+8+5+1}{5}= \frac{20}{5}= 4$

And for the deviation (assuming that the correct approximation is the deviation for a population) we can calculate the deviation with the following formula:

$\sigma = \sqrt{\frac{\sum_{i=1}^n (X_i -\bar X)^2}{n}}$

And replacing we got:

$\sigma= \sqrt{\frac{(1-4)^2 +(5-4)^2 +(8-4)^2 +(5-4)^2 +(1-4)^2}{5}} =\sqrt{\frac{36}{5}}= 2.68$

And based on this the best answer would be:

a. mean = 4; standard deviation = 2.68

3 0

3 years ago

Geometry pls help me need help

g100num [7]

A and b because they both match with the following letters

3 0

3 years ago

HELPPPPPPPP ASAP !!!!!!!!!!!!!!!

g100num [7]

Answer

(4x-5) = -20 (2x+8) = 2

Step-by-step explanation:

2 x − 8 = 2 2x-8=2 2x−8=2. Add 8 to both sides. Simplify 2 + 8 2+8 2+8 to 10. Divide both sides by 2. If its wrong then I’m very sorry but I’m sure this is correct.

6 0

3 years ago

Help me anyone that great in math

pochemuha

Answer:

B) 24/35

Step-by-step explanation:

Cos(X)= Adjacent/Hypotenuse

Cos(X) = 24/25

Therefore, option B is your answer.

Hope this answers your question!!

6 0

3 years ago