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Andrej [43]
2 years ago
10

Math help 100 points ALSO CHECK OUT MY PROFILE (MANY UNANSWERED QUESTIONS)!!!!!

Mathematics
2 answers:
amm18122 years ago
5 0
Midpoint formula:
1. Point 1 (-2,2) Point 2 (4,-1)
Midpoint: (-2+4/2, 2-1/2)(2/2, 1/2)(1, 1/2)
2. Point 1 (-3,-5)Point 2 (2, 5)
Midpoint: (-3+2/2, -5+5/2)(-1/2, 0)
Distance between two points formula:

1. Point 1 (-2, 2)Point 2 (4, -1)





2. Point 1 (1, 2)Point 2 (4, 7)





Studentka2010 [4]2 years ago
3 0
Midpoint formula:
( \frac{x1 + x2}{2}   \:  \frac{y1 + y2}{2} )
1. Point 1 (-2,2)
Point 2 (4,-1)

Midpoint: (-2+4/2, 2-1/2)
(2/2, 1/2)
(1, 1/2)

2. Point 1 (-3,-5)
Point 2 (2, 5)

Midpoint: (-3+2/2, -5+5/2)
(-1/2, 0)

Distance between two points formula:

\sqrt{(x2 - x1) {}^{2} + (y2 - y1) {}^{2}  }
1. Point 1 (-2, 2)
Point 2 (4, -1)

\sqrt{(4 + 2) {}^{2}  + ( - 1 - 2) {}^{2} }
\sqrt{6 {}^{2} + ( - 3) {}^{2}  }
\sqrt{36 + 9}
\sqrt{45}
6.7
2. Point 1 (1, 2)
Point 2 (4, 7)

\sqrt{(4 - 1) {}^{2} + (7 - 2) {}^{2}  }
\sqrt{3 {}^{2} + 5 {}^{2}  }
\sqrt{9 + 25}
\sqrt{34}
5.8
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Guys plz help me answer this!!!
ddd [48]

Answer:           number 2

cuz its the only one that makes sense

5 0
2 years ago
HURRY!!!!<br> What is the equation of the line shown in this graph?
zalisa [80]

Answer:

x = - 2

Step-by-step explanation:

The equation of a vertical line parallel to the y- axis is

x = c

Where c is the value of the x- coordinates the line passes through.

The line passes through (- 2, - 3) and (- 2, 2)

Both of these points have an x- coordinate of - 2, thus

x = - 2 ← equation of line

3 0
3 years ago
Daniella is solving 8/9 divided by 4 find her mistake and correct it
AysviL [449]
8/9 * 1/4 = 8/36 division of fractions is equal to the multiplication of the reciprocal
4 0
3 years ago
For online courses, like those in eCore, there is a positive correlation between the amount of time spent in the course and the
Troyanec [42]

Answer:

Regression Line is given by,

y = 22.909 + 0.209 x

The course grade of a student in the course who spent an average of 103 minutes in the course each week is: 22.909 + 0.209 × 103 = 44.436

Step-by-step explanation:

The equation of Regression equation is of the form of:

y = a + bx

where, a is intercept and b is slope

The formula for a and b is given by,

a=\frac{\sum Y \sum X^2-\sum X \sum XY}{n\sum X^2-(\sum X)^2}\\ and, b = \frac{n\sum XY -\sum X \sum Y}{n\sum X^2-(\sum X)^2}

Here, ∑X = 1149.8, ∑Y = 377.2, ∑XY = 93115.95, ∑X² = 320246.72

Thus, a = 22.909

and b = 0.209

Thus, Regression Line is given by,

y = 22.909 + 0.209 x

Thus, The course grade of a student in the course who spent an average of 103 minutes in the course each week is: 22.909 + 0.209 × 103 = 44.436

Now plotting these line:

6 0
2 years ago
A line goes through the point (6,-2) and has a slope of -3. What is the value of a if the point (a,7) lies on the line?​
Vikki [24]

Answer:

<h2>a = 3</h2>

Step-by-step explanation:

The slope of a line given two points can be found by using the formula

m =  \frac{ y_2 - y _ 1}{x_ 2 - x_ 1}  \\

From the question the slope is - 3

To find the value of a we have

- 3 =  \frac{7 -  - 2}{a - 6}  \\  - 3 =  \frac{7 + 2}{a - 6}  \\  - 3(a - 6) = 9 \\  - 3a + 18 = 9 \\  - 3a = 9 - 18 \\  - 3a =  - 9

Divide both sides by - 3

\frac{ - 3a}{ - 3}  =  \frac{ - 9}{ - 3}  \\

We have the final answer as

<h3>a = 3</h3>

Hope this helps you

3 0
3 years ago
Read 2 more answers
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