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Anettt [7]
3 years ago
15

Richard is frustrated. He knows the line to the right should have a 3 and a 4 in the equation but he can't remember if it is y =

4x + 3 or y = 3x + 4. a. Which equation is correct? How do you know?
Mathematics
1 answer:
Alisiya [41]3 years ago
7 0

Answer:

The correct equation is "y=4x+3"

Step-by-step explanation:

Given equation:

y= 4x+3 \ \ or \ \ y=3x+4

As per the given line formula:

\to y=mx+c

The slope(m) of the line is \frac{4}{1} = 4  and y-intercept at 3, that is the point (c). So, the correct equation of the line:   y = 4x + 3

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A random sample of 10 shipments of stick-on labels showed the following order sizes.10,520 56,910 52,454 17,902 25,914 56,607 21
sammy [17]

Answer:

Confidence Interval: (21596,46428)

Step-by-step explanation:

We are given the following data set:

10520, 56910, 52454, 17902, 25914, 56607, 21861, 25039, 25983, 46929

Formula:

\text{Standard Deviation} = \sqrt{\displaystyle\frac{\sum (x_i -\bar{x})^2}{n-1}}  

where x_i are data points, \bar{x} is the mean and n is the number of observations.  

Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}

Mean =\displaystyle\frac{340119}{10} = 34011.9

Sum of squares of differences = 551869365.6 + 524322983.6 + 340111052.4 + 259528878 + 65575984.41 + 510538544 + 147644370.8 + 80512934.41 + 64463235.21 + 166851472.4 = 2711418821

S.D = \sqrt{\frac{2711418821}{9}} = 17357.09

Confidence interval:

\mu \pm t_{critical}\frac{\sigma}{\sqrt{n}}

Putting the values, we get,

t_{critical}\text{ at degree of freedom 9 and}~\alpha_{0.05} = \pm 2.2621

34011.9 \pm 2.2621(\frac{17357.09}{\sqrt{10}} ) = 34011.9 \pm 12416.20 = (21595.7,46428.1) \approx (21596,46428)

7 0
3 years ago
What property is -7 + 8 minus + 2
Fofino [41]

I believe its additive Inverse Property

8 0
3 years ago
Plz help i will mark brainlist
iragen [17]
Y=x+4
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3x+x+4=-8
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Y=-3+4
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(X,Y)= (-3,1)

So the answer is C
6 0
3 years ago
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Answer:

Step-by-step explanation:

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TEA [102]
It’s the second option
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