9514 1404 393
Answer:
see below
Step-by-step explanation:
Starting from the point-slope equation ...
y -y1 = m(x -x1)
Solving for y gives ...
y = mx +(y1 -m·x1)
So, the slope-intercept form equation is fairly easily found:
y = mx +b . . . . where m = m, and b = y1-m·x1
This is the equation we have used for 'b' in the attached spreadsheet.
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Of course, the formula for slope is ...
m = (y2 -y1)/(x2 -x1)
This is the equation we have used for 'm' in the attached spreadsheet. For all problems, we have used the first point. (It doesn't matter which point you use if there are two of them.)
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The second attachment is the Google Sheets spreadsheet saved in ODS format. Most spreadsheet programs should be able to open that so you can see the formulas, if you're interested. (The gray values of m are computed using the two points. The unshaded values of m are entered by hand.)
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I'll write a couple of equations in each group so you can see how the spreadsheet numbers relate:
y = mx +b
1. y = 2x -7
3. y = 2/3x +4
8. y = 1/3x -5
9. y = -5/2x +4
The first thing you should know in this case is that a circumference has a total measure in 360 degrees.
We have then that the formula to find EG in this case is:
EG + GF + FE = 360
We cleared EG:
EG = 360-GF-FE
We substitute the values:
EG = 360-83-66
EG = 211
Answer
EG = 211 degrees.
The computation shows that the year that Helike disappeared is 2248 years in between.
<h3>How to calculate the value?</h3>
From the information, Helike disappearance was denoted as -1/5w. The year that civil year ended was represented as c + 1/4c.
This implies that year Helike disappeared will be:
= c + 1/4c - +-1/5w)
= 2248 years.
Here is the complete question:
The year the Greek city of Helike disappeared is -⅕ times the year the US Civil War ended. Let w represent the year the Civil War ended. Write an expression in terms of w to represent the year of Helike’s disappearance.
Part G
Use the results from Part E and Part F to determine the year Helike disappeared. Express your answer in terms of BC or AD.
Part H
Using the results from parts D through G, write an expression that represents the number of years elapsed between the disappearance of the Greek city of Helike and the end of the US Civil War. Write the expression in terms of c and w. Then solve the expression to find out how many years separate these two events.
Learn more about mathematical computation on:
brainly.com/question/4658834
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❖ The train's speed was 130 mph.
Divide:
390 ÷ 3 = 130
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Formula:
Y=Mx+b
(Basically its like this: Y=Slope(x)+Y intercept)
The M will always be slope, and the b is always going to be the y intercept.
So, all you have to do now is find them.
<span>y=-4x-9</span>
y=-4(slope)x-9(y intercept)
So, -4 is the <em>slope</em>, and the <em>y intercept</em> is -9
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~Hope this helped :)