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3 years ago

The expression 7! is equal to which of the following

Mathematics

2 answers:

Sladkaya [172]3 years ago

8 0

Its basically 7 see there is nothing but the number 7 which means as to an expression its 7.

Allushta [10]3 years ago

7 0

...a...a is the same number....7....

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The Office of Student Services at a large western state university maintains information on the study habits of its full-time st

Rudiy27

Answer: The standard error of the mean = 0.5

Step-by-step explanation:

Given : Sample size : n = 144

Standard deviation : $\sigma=6\text{ hours}$

The formula to find the standard error of the mean is given by :-

$S.E.=\dfrac{\sigma}{\sqrt{n}}$

i.e. $S.E.=\dfrac{6}{\sqrt{144}}=0.5$

Hence, the standard error of the mean =0.5

3 0

2 years ago

Find the midpoint of (-5,12) and (3,-6)

exis [7]

Answer:

mid point: (4,5)

hope that helps :)

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

PLEASE HELP ME IM BEGGING YALL

drek231 [11]

Answer:

False. Correct ratio is $\frac{12}{37}$

Step-by-step explanation:

the ratio of sine is opposite over hypotenuse

(opposite is the side across from the angle and hypotenuse it the slant line in the triangle)

7 0

2 years ago

A robot moving forward at a constant speed takes 2.5 hours to travel 1 kilometer. Moving forward at this same constant speed, it

makvit [3.9K]

Answer:

The length of the hallway is 10 m.

Step-by-step explanation:

Given:

Time taken to cover 1 km = 2.5 hours

Distance covered in 2.5 hours = 1 km

Therefore, speed of robot = $\frac{\textrm{Distance}}{\textrm{TIme}}=\frac{1}{2.5}=0.4\ km/h$

Now, speed is constant.

Now, time taken to cover the length of hallway = 90 s

Speed of the robot = 0.4 km/h

Converting 0.4 km/h to m/s, we multiply by the factor $\frac{5}{18}$ . This gives,

$0.4\times \frac{5}{18}=\frac{1}{9}\ m/s$

Now, distance of the hallway is equal to the product of speed and time. So,

Distance of hallway = Speed $\times$ Time

Distance of hallway = $\frac{1}{9}\times 90=\frac{90}{9}=10\ m$

Therefore, the length of the hallway is 10 m.

5 0

2 years ago

The radius of the cylinder is 3 inches and the height is 8 inches. Find the volume of the cylinder.

Dafna11 [192]

Answer:

1584/7 in² ≈ 226.3 in²

Step-by-step explanation:

Given,

Radius R = 3 in
Height H = 8 in
Volume V = ?

We know that,

Volume(Cylinder) = πr²h

Substitute values,

π(3²)8
9(8)π
72π

Taking π as 22/7

72*22/7
1584/7 ≈ 226.3 in²

5 0

1 year ago