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3 years ago

There were 9 roses in the vase. Nancy cut some more roses from her flower

Mathematics

2 answers:

Aleonysh [2.5K]3 years ago

5 0

Answer:

7 roses

Step-by-step explanation:

16-9=7

Alla [95]3 years ago

4 0

Answer:she cut 7 roses

Step-by-step explanation:

she has 9 roses in the vase she cut 7 roses from her garden to get 16

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A national newspaper reported that the state with the longest mean life span is Hawaii, where the population mean life span is 7

Alinara [238K]

Answer:

Mean = 71.4 years

Standard Deviation = 20.64 years

Step-by-step explanation:

We are given the following data set:

72, 68, 81, 93, 56, 19, 78, 94, 83, 84, 77, 69, 85, 97, 75, 71, 86, 47, 66, 27

Formula:

$\text{Standard Deviation} = \sqrt{\displaystyle\frac{\sum (x_i -\bar{x})^2}{n-1}}$

where $x_i$ are data points, $\bar{x}$ is the mean and n is the number of observations.

$Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}$

$Mean =\displaystyle\frac{1428}{20} = 71.4$

Sum of squares of differences =

0.36 + 11.56 + 92.16 + 466.56 + 237.16 + 2745.76 + 43.56 + 510.76 + 134.56 + 158.76 + 31.36 + 5.76, 184.96 + 655.36 + 12.96 + 0.16 + 213.16 + 595.36 + 29.16 + 1971.36 = 8100.8

$S.D = \sqrt{\displaystyle\frac{8100.8}{19}} = 20.64$

Mean = 71.4 years

Standard Deviation = 20.64 years

6 0

4 years ago

Given g(x)=-x-2, find g(3)

statuscvo [17]

Answer:

g(x) = - x-2, therefore g(3) = - 3-2, or in better terms, g(3) = -5

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

Tony's taking cookies to a bake sale. He already made 70 cookies on Monday, and wants to make more on Tuesday. His plan allows h

kotegsom [21]

70+14 x 7 =168 :-] :-] :-]

6 0

3 years ago

WILL GIVE BRAINEST <br>if f(x)=2x-5 and g(x)=x2.....

Ymorist [56]

Note that the notation $(f+g)(x)$ is just another way of writing $f(x)+g(x)$ . Here, we're simply taking the expression for f(x) and adding the expression for g(x) to it. Together, we have:

$f(x)=2x-5\\g(x)=x^2-4x-8$

Which means that

$(f+g)(x)=f(x)+g(x)=(2x-5)+(x^2-4x-8)$

And from there, it's just a matter of combining like terms to simplify.

4 0

3 years ago

2 3 + 6^{2} ÷ 9 i need help with this one

creativ13 [48]

Answer: 7

Step-by-step explanation:

3+6^(2) / 9

3 + 36 / 9

3 + 4

5 0

3 years ago