2 years ago

The ratio of students who walk home from school to the students who ride the bus is 2:7

Mathematics

2 answers:

baherus [9]2 years ago

8 0

Answer:

Step-by-step explanation:

thanks it is 3.5

yan [13]2 years ago

5 0

3.5 Ithink that's the answer

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Given the following winning percentages of the teams in a league (for a single year) compute the within-season standard deviatio

Masja [62]

Answer:

(b) 0.251

Step-by-step explanation:

1. Standard deviation equation:

$SD=\sqrt{\frac{\sum\limits^N_i {(x_{i}-X)^{2} } }{N} }$

Where X is the mean of the data, and N the amount of data. Then, N=5

2. Estimate the Mean:

$X=\frac{0.750+0.750+0.200+0.600+0.200}{5}=\frac{2.5}{5}=0.5\\$

3. Caclulate Standard deviation:

$SD=\sqrt{\frac{{(0.750-0.500)^{2}+(0.750-0.500)^{2}+(0.200-0.500)^{2}+(0.600-0.500)^{2}+(0.200-0.500)^{2} } }{5} }$

$SD=\sqrt{\frac{0.315}{5} }=\sqrt{0.063}\\SD=0.251$

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2 years ago

What is the slope of the line through the points (2, 5) and (6, 13)?

RSB [31]

Rise over run

13-5=8 rise
6-2=4 run

The answer is c

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3 years ago

a collection of nickels and quarters are worth $8.80. if she has 68 total nickels and quarters, how many quarters does she have?

nikdorinn [45]

Answer:20

Step-by-step explanation:

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3 years ago

What is the slope of a line that is perpendicular to the line y=1/6x+4?

nlexa [21]

Since the slope is rise/run, 1/6 goes up one, right 6. Perpendicular is opposite that. so a slope of -6 goes down 6 and right 1. (as a fraction it's -6/1)

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3 years ago

Explain how you can use the answer to problem 2 to verify the unit rate is 40

Helen [10]

Answer:

6ab+8a factor out 2 from the expression. Your answer will be (2ax(3b+4). I hope this helps you.

Step-by-step explanation:<!>BRAINLIEST APPERICATED<!>

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3 years ago