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3 years ago

What is the mean of the values in the stem-and-leaf plot?

Mathematics

1 answer:

Schach [20]3 years ago

3 0

Answer:

mean = 24

Step-by-step explanation:

In a stem-and-leaf plot, each leaf represents a number or piece of data.

Each the leaf will only show the last digit of the number, and the stem will have the rest.

Examples:

stem value of 1 with a leaf value of 2 = 12

a stem value of 3 with a leaf value of 0 = 30

So, this is your plot:

Stems| Leaves

1 | 2 3 5

2 | 8 8

3 | 0

4 | 2

Your data is 12, 13, 15, 28, 28, 30, 42.

Add up all these numbers and divide by the number of leaves.

Sum of data = 12 + 13 + 15 + 28 + 28 + 30 + 42 = 168

Number of leaves = 7

168 ÷ 7 = 24

∴ The mean is the values in the stem-and-leaf plot is 24.

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F(r) = 3.14r2 . What is f(3)?

lbvjy [14]

Answer:

The value of f(3) = 28.26

Step-by-step explanation:

You have to do is to substitute r = 3 into the function :

$f(r) = 3.14 \times {r}^{2}$

$f(3) = 3.14 \times {3}^{2}$

$f(3) = 3.14 \times 9$

$f(3) = 28.26$

4 0

3 years ago

Since heat touching the surface of an ice cube causes it to melt, is it

Igoryamba

Well, it depends on the size of the ice cub and how much heat is being added. if its smaller and it has large amounts of heat being added it will melt fast, if its small and low amounts of heat are being added it will melt slower, if its a big cubs and large amounts of heat are being added it will melt slower than the small cub at the same temp but if its getting more heat than the small cub its should melt faster, ect. but in your case id say your right and bigger surface slower melt.

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3 years ago

HELP ASAP

kow [346]

Answer:

Step-by-step explanation:

The distributive property says that

$a\cdot (b+c)=a\cdot b+a\cdot c$

Consider option C. In this option,

$(0.7\cdot 0.7)+(0.7\cdot 0.9)+(0.7\cdot 0.2)=0.7\cdot (0.7+0.9+0.2)$

The left part consists of three products

$(0.7\cdot 0.7)\\ (0.7\cdot 0.9)\\ (0.7\cdot 0.2)$

Each of these products has the factor $0.7.$ Usig the distributive property, we can write this factor before the brackets and all remaining factors write as the sum in the brackets: