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natulia [17]
3 years ago
11

Which set of ordered pairs and equation for a best fit line represents data from the table?. a. (x1, y1) = (64, 135), (x2, y2) =

(74, 166) y=3.875x-120.75. b. (x1, y1) = (62, 122), (x2, y2) = (70, 146) y=2.9x-59.1. c. (x1, y1) = (62, 131), (x2, y2) = (72, 158.5) y=2.75x-12. d. (x1, y1) = (64, 130), (x2, y2) = (72, 158.5) y=3.562x-98
Mathematics
1 answer:
Marrrta [24]3 years ago
8 0
Just comparing your (x, y) points to the values on the table, it looks like b) would be the quick answer. Since it states under the table to use average values within each range.
So for x=62 (the weight), we have y=122 (the iron count) which would be the average of the range between 115 and 129.

Similiarly, x=70 corresponds to y=146, which is the average of 139 and 153.
You could take the average values of your highest and lowest iron count ranges compare them to the max-min weight to get your slope. Looks like it would be (155-112)/(73-58)= 43/15= 2.8666 repeating. That would make sense with the slope in the equation listed in b) as well. <span>
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What are the roots of the equation? 2x2+x=6 Select each correct answer.
Georgia [21]

Answer:

x = 2

Step-by-step explanation:

2x2=4

4+2=6

6=6

There hope that is what you are looking for

3 0
3 years ago
Is this the correct graphing for the inequality 2c&lt;=100?<br> i’ll mark brainliest please help!!!
zepelin [54]

Answer:

Step-by-step explanation:

2c≤100 |:2

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5 0
3 years ago
Identify the percent increase in total sales and the percent increase in sales of trench coats. Then find which percent of
Ilya [14]

Answer:

Answer b: Sales of trench coats increased 8.3 percentage points faster than total coat sales.

Step-by-step explanation:

First add all the sales for 2006, and do the same for the 2007 sales, so we can compare both total sales numbers:

For 2006 we have:

103+297+210+213+137 = 960 total sales

For 2007 we have:

127+223+210+285+259 =  1104 total sales

The percent increase is calculated as the difference between the final value minus the original value, divided by the original value and multiplied by 100:

For the total number of coats we have that the percent increase is: \frac{1104-960}{960} * 100= 15%

For the trench coats (which went from 103 sales tp 127 sales) we have the following percent increase: \frac{127-103}{103} * 100= 23.3%

Therefore, the percent increase in trench coats was larger than the percent increase in total sales by:

23.3 % - 15% = 8.3%

7 0
3 years ago
Read 2 more answers
Half of a number plus 12 is 46
asambeis [7]
Let the number = x
x/2 + 12 = 46
x/2 = 46 - 12 
x/2 = 34
x = 34 * 2
x = 68

So, your final answer is 68

Hope this helps!
4 0
3 years ago
Read 2 more answers
The table shows a direct variation.
lakkis [162]
2.4 because 4.8/2 is 2.4. 14.4/4 is also 2.4. Constant of variation is the unit rate
4 0
3 years ago
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