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Aleks04 [339]
3 years ago
7

Equation of a line of best fit for the scatterplot is Y = 7X -9 what is the slope of the equation

Mathematics
1 answer:
d1i1m1o1n [39]3 years ago
3 0

Answer:

7

Step-by-step explanation:

Or 7/1. the equation is y = mx + b. m is the slope. b is the y intercept. so m (the slope) would be 7. And b (the y intercept) would be -9.

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What number set does -18 belong to
igor_vitrenko [27]
-18 is an integer
also, a rational number and a real number.
3 0
4 years ago
URGENT!!! I NEED MATH HELP ASAP!!! I don't understand this assignment at all! It has 5 parts, the first four are charts or graph
Vika [28.1K]
First off, 23+12 isn't 45.

Anyways, Part A, graphing should be pretty simple, just match the corresponding values together as shown by the table on the left. For example, for the crop size that says "200," go up to where the value is seven, and mark it. 

The function is also not that hard. Make "x" equal the value of the crop size. (Square yards) Thus for "x" crop size, the function B(x) = 3.5/100.

Part B<span>
W(x) = 60*x

</span>For the completing the table, just plug in some values for "x" (remember "x" is "Bushels of corn in a shipment") like 1, 2, 3, 4 etc, and write the corresponding output next to it.

Part C
The given information literally tells you the answer. P(x) = 4x. That's ur function. So for the graph, say "x" ("Bushels of Corn") is 1, than the corresponding "y" value ("Selling Price") is 4, since P(x) = 4*x. 
<span>
As for completing the table, once again, just write in several values, geez. For example, "Bushels of Corn" = 5, than "Selling Price" = 20. 

The function basically is the key to all the answers. </span>

Part D
Alright, remember, once you get the function, you have all the answers. 5 Bushels of corn equals 14 gallons of ethanol, so the function is <span>
<span>E(x) = 14/5. (And remember, the "x" value is "bushels of corn")
</span></span>
The table and graph are easy to do, since you know the function, however the "y" axis values on the graph are kind of challenging to deal with, but I have faith that you can estimate and mark the values close enough.<span>

</span>

Here's my best explanation for Part E,<span>

Proportional relationships have graphs that always pass through the origin of a graph, while non-proportional graphs don't. And also, proportional relationships always have consistent ratios, while non-proportional relationships don't. And for their equations, proportional relationships equations are always one step, (Ex: y = 5x) while non proportional equations are two-step equations, which means they contain a constant value that is added or subtracted on the left side. (Ex: y = 3x - 12)</span>


4 0
3 years ago
Read 2 more answers
An opinion poll reported that 36% believe a certain governor broke campaign financing laws in his election campaign. How many pe
77julia77 [94]

Answer:

<em>The number of people would have participate in opinion poll</em>

<em>n =  15,267</em>

Step-by-step explanation:

<u><em>Step(i)</em></u>:-

Given data an opinion poll reported that 36% believe a certain governor broke campaign financing laws in his election campaign.

<em>Given proportion = 36% =0.36</em>

<em>Given the margin of error = 1% =0.01</em>

<em>Level of significance = 99% 0 r 0.01</em>

<em>Z₀.₀₁ = 2.576</em>

<u><em>step(ii):</em></u><em>-</em>

<em>The margin of error of Population proportion is determined by</em>

M.E = \frac{Z_{0.01} \sqrt{p(1-p)} }{\sqrt{n} }

0.01 = \frac{2.576 \sqrt{0.36(1-0.36)} }{\sqrt{n} }

\sqrt{n}  = \frac{2.576 \sqrt{0.36(1-0.36)} }{0.01 }

√n =  123.648

Squaring on both sides , we get

<em>n =  15,267</em>

<u><em>final answer:</em></u><em>-</em>

<em>The number of people would have participate in opinion poll</em>

<em>n =  15,267</em>

7 0
3 years ago
A line passes through the points (-3, 9) and (-1, 3). What is its equation in slope-intercept form?​
kobusy [5.1K]

Answer:

y= -3x

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
A group of friends is addressing wedding invitations. Casey can address 20 envelopes in one hour, Anne can address 44 envelopes
lukranit [14]

Answer:

Time taken = 6.2 hours

Step-by-step explanation:

Firstly, we will calculate the rate of each person per hour. Then we combine the rates and afterward divide the number of envelope they could address by the combined rate.

Casey can address 20 envelopes at the rate of 20 per hour.

Casey rate = 20 envelope per hr

Anne can address 44 envelope in 2 hours

Anne rate = 22 envelope per hr

Paula can address 68 envelope in 3 hours

Paula rate = 68/3 envelope per hr

Time it will take them to address 400 envelope can be solved below

Add their rate = 20 + 22 + 68/3 = 42 + 68/3 = (126 + 68)/3 = 194/3

Time = 400 ÷ 194/3 = 400 × 3/194 = 1200/194 = 6.1855670103

Time taken = 6.2 hours

6 0
3 years ago
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