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3241004551 [841]
3 years ago
5

Eric has been donating books he no longer needs to his local library. After 3 months of donating, he had 157 books left in his r

oom. After 8 months of donating, he had 102 books left in his room. How many books per month did Eric donate on average between months 3 and 8? (2 points)
Mathematics
1 answer:
vladimir1956 [14]3 years ago
6 0
He donated 11 books on average every month
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35 points!! Only comment if you really know the answer please.
hodyreva [135]
Y = 3x - 1 ---- (1)
x - y = -9  ---- (2)

From Equation 2:
x - y = - 9
x + 9 = y 
y = x + 9 --- (2a)

(1) - (2a):
0 = 3x - x - 1 - 9
0 = 2x - 10
2x - 10 = 0
2x = 10
x = 5 ---- sub into (1)

y = 3(5) - 1 
y = 15 - 1
y = 14 

5 0
3 years ago
Is 12 c greater than less than or equal to 3 qt
zysi [14]
4 cups in a at
12 cups = 3qt
3qt =12 cups
So they are equal
8 0
2 years ago
Read 2 more answers
I really need help someone
Ann [662]

with what english, science anything i no it all

8 0
3 years ago
The diameter of a round rug is 42 inches. What is the approximate area of the rug?
Troyanec [42]

Answer:

Area of the 2 circles

= 2 pi r square root

= 2 x 3,14 x 21 x 21

=6,28 x 441

=2769.48inches square

Area of the rectangle

= L x h

= where is the other number bc then u cant solve it

Step-by-step explanation:

3 0
2 years ago
"During their first swim through a water maze, 15 laboratory rats made the following number of errors (went the wrong way): 2, 1
velikii [3]

Answer:

mean = 7.8, median =5, and mode(s) =5

the shape of the distribution is positive skewed

Step-by-step explanation:

Find the mean, median and mode(s) for

2, 17, 5, 3, 28, 7, 5, 8, 5, 6, 2, 12, 10, 4, 3

the mean = sum of (2, 17, 5, 3, 28, 7, 5, 8, 5, 6, 2, 12, 10, 4, 3)/15 =

              =  7.8          

the median = 2, 2, 3, 3, 4, 5, 5, 5,  6, 7,  8, 10, 12, 17, 28, = the middle value, the 8th value falls in the middle = 5

the mode is the most occurring value = 5

2. Without constructing a frequency distribution or graph, would you characterize the shape of this distribution as balanced, positively skewed, or negatively skewed?

positive skewed or Right skewed because the value of the mean is greater than the median

A right skewed histogram is a positive skewed histogram (which means the tail is longer the positive direction) that have its tail to the right.For a right skewed histogram the mean has a larger value that the median because the peak of the skewness fall in the median range then the mean follow to the right. and the data drive the mean value to the right which increase in value.

Read more on Brainly.com - brainly.com/question/14703862#readmore

5 0
3 years ago
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