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3 years ago

Can the ratio of a parents age to his/her child's age ever be exactly 10:9? Explain.

1 answer:

6 0

No, it can never be a ratio of 10:9 because that would mean let's say I'm 9 and my parents are 10 years of age that would have to mean my parents reproduced me at age of 1 years old which is very highly impossible.

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The ages of 11 students enrolled in an on-line macroeconomics course are given in the following steam-and-leaf display:

blsea [12.9K]

Answer:

The standard deviation of the age distribution is 6.2899 years.

Step-by-step explanation:

The formula to compute the standard deviation is:

$SD=\sqrt{\frac{1}{n}\sum\limits^{n}_{i=1}{(x_{i}-\bar x)^{2}}}$

The data provided is:

X = {19, 19, 21, 25, 25, 28, 29, 30, 31, 32, 40}

Compute the mean of the data as follows:

$\bar x=\frac{1}{n}\sum\limits^{n}_{i=1}{x_{i}}$

$=\frac{1}{11}\times [19+19+21+...+40]\\\\=\frac{299}{11}\\\\=27.182$

Compute the standard deviation as follows:

$SD=\sqrt{\frac{1}{n}\sum\limits^{n}_{i=1}{(x_{i}-\bar x)^{2}}}$

$=\sqrt{\frac{1}{11-1}\times [(19-27.182)^{2}+(19-27.182)^{2}+...+(40-27.182)^{2}]}}\\\\=\sqrt{\frac{395.6364}{10}}\\\\=6.28996\\\\\approx 6.2899$

Thus, the standard deviation of the age distribution is 6.2899 years.

7 0

3 years ago

Catherine saved some money and plans to add the same amount each week to her savings account. The table represents the number of

elena55 [62]

Answer:

b y=6x+50

Step-by-step explanation:

i got it right hope this helps

8 0

3 years ago

Read 2 more answers

How do i find 6.2(-0.3)

Marta_Voda [28]

Step-by-step explanation:

6.2(-0.3)

means,6.2×-0.3

-1.86

hope it's helpful ❤❤❤❤❤❤

THANK YOU.

7 0

3 years ago

Find the slop of the line through the points (7,4) and (-10,4)

Leya [2.2K]

answer: umm you would have to be more specific i dont rilly understand

(its not like i dont know i just dont understand what a slope is

3 0

3 years ago

Read 2 more answers

What is the function of thsi

Len [333]

ANSWER:
_________

The last choice ( y = 2/5x + 3)

EXPLNATION:
____________

The line is going up which means the slope is positive

The line goes down/up 3 and left/right 5 which means the slope is 3/5

The line touch positive 3 on the y line which is the y-intercept (0,3)

FUN FACT:
__________

The first oranges weren’t orange •_•

I hoped this help! And have a •AMAZING• day :3

4 0

3 years ago