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3 years ago

Using measures of center and variability to compare data- quiz answers?

Mathematics

1 answer:

lawyer [7]3 years ago

3 0

herehopes it helps can i pleaseget brainliest

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Last semester, Zachary earned an average score of 80 points on math tests. So far this semester, his average score is 15% lower.

Ostrovityanka [42]

Look here no one help if people do too much time waste till help received just use app names guthmath helps with math and use this code P9EJ5H to get answere because believe me u will wait alot the app is free

4 0

3 years ago

Read 2 more answers

Two cars travel at the same speed to different destinations. Car A reaches its destination in 17 minutes. Car B reaches its dest

Goryan [66]

Answer:

speed of car A =Speed of car B=0.8 miles/minutes.

Step-by-step explanation:

We are given that speed of car A is equal to speed of car B.

Also let car A travels x miles.

and car B travels y miles.

Car A reaches its destination in 17 minutes.

this means that speed of car A is given by: $\dfrac{x}{17}$ miles/minutes ( since speed is defined as the ratio of distance and time).

Car B reaches its destination in 32 minutes.

This means that the speed of car B is given by: $\dfrac{y}{32}$ miles/minutes

as speed of both cars are equal this means:

$\dfrac{x}{17}=\dfrac{y}{32}$ ------(1)

Also we are given Car B travels 12 miles farther than Car A.

this means $y-x=12$

$y=12+x$ ------(2)

on using equation (1) and (2) we have:

$\dfrac{x}{17}=\dfrac{12+x}{32}\\ \\32x=17(12+x)\\\\32x=17\times12+17x\\\\32x-17x=17\times12\\\\15x=122\times17\\\\x=13.6$

Hence the speed of car A is 0.8 miles/minutes ( since x/17 is the speed of car A)

Speed of car B=0.8 miles/minutes.

8 0

4 years ago

Jason won 115 super bouncy ballsplaying horseshoes at the county fair. At

STatiana [176]

Answer:

28 students

Step-by-step explanation:

Work backwards.

First, subtract 3:

115 - 3 = 112

Then, divide by 4:

112 ÷ 4 = 28

So, there are 28 math students in his class.

7 0

3 years ago

Anthony wrote 52.066 as the standard form for fifty-two and sixty-six hundredths. Is he correct? Explain.

aleksley [76]

Answer:

That's incorrect. He wrote the form for fifty-two and sixty-six thousandths. The correct number is 52.66.

7 0

2 years ago

The ratio of the number of boys campers to the number of girl campers was 8:7. if there were a total of 195 campers, how many bo

cestrela7 [59]

Imagine for a group of 15 (8 boys and 7 girls), you will have 8 girls. So the ratio of girls to total campers is 8/15
Because we have 195 campers, we have 8/15 = x/195
solve for x
x= 104 girls
and we have 195 - 104 = 90 boys

6 0

4 years ago