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Likurg_2 [28]
3 years ago
15

1. Find the mean, median, and mode of this data set. 76, 74, 78, 72, 73, 80, 49, 72, 83

Mathematics
1 answer:
aliina [53]3 years ago
3 0

Mean 74
Median 73
Mode 72
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Xanthia can read 100 pages per hour and Molly can read 50 pages per hour. If they each read the same book, and the book has 225
Talja [164]

Answer:

135 minutes

Step-by-step explanation:

Let

y -----> the number of pages to finish reading the book

x ----> the number of hours

we know that

The linear equation in slope intercept form is equal to

y=mx+b

where

m is the unit rate or slope of the linear equation

b is the y-intercept or initial value

In this problem we have

<em>Xanthia</em>

m=100\ pages/hour

b=225\ pages

y=-100x+225 ----> the slope is negative because is a decreasing function

For y=0

substitute and solve for x

0=-100x+225

100x=225

x=2.25\ hours ---> Xanthia's time to finish reading the book

<em>Molly</em>

m=50\ pages/hour

b=225\ pages

y=-50x+225 ----> the slope is negative because is a decreasing function

For y=0

0=-50x+225

50x=225

x=4.5\ hours --- Molly's time to finish reading the book

To find out how many more minutes than Xanthia would it take for Molly to finish reading the book, subtract Xanthia's time from Molly's time

4.5\ h-2.25\ h=2.25\ h

Convert to minutes

Multiply by 60

2.25\ h=2.25(60)=135\ minutes

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2 years ago
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3х2 – 10x+7<br> Factor each trinomial
Archy [21]

Answer:

324

Step-by-step explanation:

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3 years ago
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2*10^3 in scientific notation
Natali5045456 [20]
2000, you just need to put three zeros at the end of the number.
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What is the 9th term in the sequence 2, -6, 18, -54, ...?
gregori [183]

Your answer would be 13,122

You would multiply by -3 each time for this particular sequence.

Hope I helped!

6 0
2 years ago
I don't understand what's the answer
gayaneshka [121]
The correct answer is D. 36 x 1/9
When there is a negative exponent on a whole number:
4 ^-2
1/ 4 ^2 = 1b16
6 0
3 years ago
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