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Whitepunk [10]
3 years ago
8

Find the median and mean of the data. Which reflects the best measure of the center? 8,8,9,9,9,9,9,10,10,40

Mathematics
1 answer:
Lady bird [3.3K]3 years ago
7 0

The mean is 12.1 and the median is 9.

To find the mean you add together all the values (8,8,9,9,9,9,9,10,10,40) and divide the sum (121) by the number of values there are (10). Thus making the mean 12.1.

To find the median, you sort the values numerically, and find the middle-most number. When doing so, you find that there are 2 numbers in the middle of this value set (since there are an even number of values). Since the 2 left-over values are 9, the median is 9.

I hope this helps!

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A ball is shot into the air using a brand new super-high-tech robotic arm to help baseball players practice catch fly balls.
stepladder [879]

Answer:

69 feet

Step-by-step explanation:

we have

h(t)=-16t^{2}+64t+5

where

h(t) is the height of the ball

t is the time in seconds

we know that the given equation is a vertical parabola open downward

The vertex is the maximum

so

the y-coordinate of the vertex represent the maximum height of the ball

Convert the quadratic equation into vertex form

The equation in vertex form is equal to

y=(x-h)^{2}+k

where

(h,k) is the vertex of the parabola

h(t)=-16t^{2}+64t+5

h(t)-5=-16t^{2}+64t

h(t)-5=-16(t^{2}-4t)

h(t)-5-64=-16(t^{2}-4t+4)

h(t)-69=-16(t^{2}-4t+4)

h(t)-69=-16(t-2)^{2}

h(t)=-16(t-2)^{2}+69

the vertex is the point (2,69)

therefore

The maximum height is 69 ft

6 0
3 years ago
A:b = 1:5<br> a:c = 2:1<br> please helppp
joja [24]

Answer:

what is the question I don't understand the question so sorry

5 0
2 years ago
If you bought a stock last year for a price of $103, and it has risen 7% since then, how
Marrrta [24]

Answer:

the stock is worth $110.21

Step-by-step explanation:

The first thing you want to do is multiply 0.07 and 103, to find out what 7% of 103 is. When you multiply those two numbers you are going to get 7.21. You are then going to add 103 and 7.21 to find out how much it would be worth now.

7 0
3 years ago
Please help 10 points
Wittaler [7]

Answer:

A: answer is 0 because anything to the power of 0 is 1

B: 0 or 1 because 1 to the power of 1 is 1 and 1 to the power of 0 is also 1

3 0
3 years ago
The perimeter of a rectangle is 64cm.
Svet_ta [14]

Answer:

4cm

Step-by-step explanation:

28 + 28 = 56

64 - 56 = 8

8/2=4

just to check : 4 + 4 + 28 + 28 = 64

hope this helps x

brainliest plx?

6 0
3 years ago
Read 2 more answers
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