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4 years ago

What is the mean and median of 7,7,7,7,7,8,8,8,8,9

Mathematics

1 answer:

navik [9.2K]4 years ago

8 0

Answer:

the mean is 6.7

the median is 8

Step-by-step explanation:

the mean is the average so you add all the numbers and devide it by how many numbers there are

the median is the middle so you will find what number is in the middle

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PLS HELP IM TIMED

shutvik [7]

Answer:

0.56

Step-by-step explanation:

0.56 Because you would have yo subtract 0.77 and 0.21

8 0

3 years ago

Please help! :)

sweet-ann [11.9K]

Answer:

Second option is correct

$Arc\ length = \frac{3}{4} \pi\ in$

Step-by-step explanation:

Given:

Central angle = 15°

Radius of the circle = 9 in

Arc length = ?

Given formula is

$\frac{Arc\ length}{Circumfrance} = \frac{n}{360}$

Where n is the central angle of the sector.

Write the given formula for Arc length of the sector.

$Arc\ length = Circumfrance\times \frac{n}{360}$

We know that the the circumference of the circle is $2\pi r$ , where r is the radius of the circle,

$Arc\ length = 2\pi r\times \frac{n}{360}$

Now we substitute central angle value and radius value in above equation.

$Arc\ length = 2\pi 9\times \frac{15}{360}$

$Arc\ length = 18\times \pi \frac{15}{360}$

$Arc\ length = \frac{18\times 15}{360} \pi$ ----------( $\frac{18}{360}=\frac{1}{20}$ )

$Arc\ length = \frac{15}{20} \pi$

Divide the numerator and denominator by 5.

$Arc\ length = \frac{3}{4} \pi\ in$

Therefore the arc length of the sector is $\frac{3}{4} \pi\ in$

4 0

3 years ago

X+3y=18 3x+9y=12 determine weather the graphs of each pair of equations are parallel, perpendicular, coinciding, or none of thes

MariettaO [177]

The two lines are parallel.

6 0

4 years ago

What is the estimated sum? Round each number addend to the nearest thousand before adding. 75,364 + 472,756

laila [671]

B. 548, 000

75,364 rounds down to 75,000 because of the 3. 472,756 rounds up to 473,000 because of the 7.
75,000 + 473,000 = 548000

5 0

3 years ago

An art academy requires there to be 3 teachers for every 60 students 4 tutors for every 48 student how many students does the ac

vfiekz [6]

Answer:

per teacher = 20 students

per tutor = 12 students

72 students = 18 tutors

Step-by-step explanation:

Divide 60 by 3 to get 20

Divide 48 by 4 to get 12

Divide 72 by 4 to get 18

5 0

4 years ago