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german
2 years ago
6

Find the equation of the line passing through the points (-4,-5) and (4,1)

Mathematics
1 answer:
RoseWind [281]2 years ago
6 0

Answer:

Y = 3/4x - 2

Step-by-step explanation:

Slope = (1 - - 5)/(4 - - 4 =6/8 = 3/4

b = -5 - (3/4)(-4)

b = -5 + 3 = -2

y = 3/4x - 2

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In trapezoid ABCD, points M and N are arbitrary points on bases AB and CD respectively. Find the area of the trapezoid, if area
mel-nik [20]

Remark

This is quite a nice little problem. It takes a minute or three to figure out the answer, and when you do, you will be certain that you have been tricked. It is a little like the egg of Columbus.

Solution

The Base of Triangle ABN is AB

The Base of Triangle CDM is CD

The height of both given triangles is h. That is the distance between the two parallel lines.

Area ABN = 1/2*AB * h = 23 cm^2

Area CDM = 1/2*CD * h = 18 cm^2

Now the Area of the trapezoid is

Area_Trapezoid = 1/2 * h (AB + CD)     Using the distributive property Remove the brackets.

Area_Trapezoid = 1/2*AB*h + 1/2*CD*h Did you notice something? Those terms are just the area of the triangles (written above.)

Area Trapezoid = 23 + 18 = 41 cm^2 <<<< Answer

6 0
3 years ago
Frank must choose a number between 67 and 113 that is a multiple of 3,4 and 9 . Write all the numbers that he could choose.
svet-max [94.6K]

Answer: 72  108

Step-by-step explanation:

I think that is it but I am not sure

6 0
2 years ago
G
kvv77 [185]

Answer:

Girls in Mr. Chang's class: 28 - 21 ; # girl students = # total students - # boy students ; 7 girl students.

Boys in Mr. Chang's class: 28 - 7 ; # boy students = # total students - girl students ; 21 boy students.

8 0
2 years ago
What 2/9rounded to the nearest whole number
Arte-miy333 [17]
The answer is 3 because if you were to round 2.9 the next whole up from that is 3
4 0
3 years ago
Please Help I will do Brainliest for first and correct answer
Soloha48 [4]

Answer:

5

Step-by-step explanation:

41 - 32 = 9

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8 0
3 years ago
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