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kolezko [41]
3 years ago
10

Find the unit rate : Running 2.3km in 7 minutes

Mathematics
1 answer:
sp2606 [1]3 years ago
4 0

Answer:

0.3

Step-by-step explanation:

pls give me brainliest plzzzzzz

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The three lines given below form a triangle. Find the coordinates of the vertices of the triangle.
LenKa [72]

Answer:

  • (3, 5), (1, 2) and (5, 1)

Step-by-step explanation:

Make three systems with pairs of lines and solve them to work out the vertices.

1) <u>Line 1 and line 2</u>

  • -3x + 2y = 1
  • 2x + y = 11

<u>Double the second equation and subtract equations:</u>

  • -3x + 2y - 2(2x + y) = 1 - 2(11)
  • -3x - 4x = 1 - 22
  • -7x = - 21
  • x = 3

<u>Find y:</u>

  • 2*3 + y = 11
  • 6 + y = 11
  • y = 11 - 6
  • y = 5

The point is (3, 5)

2) <u>Line 1 and line 3</u>

  • -3x + 2y = 1
  • x + 4y = 9

<u>Triple the second equation and add up equations:</u>

  • -3x + 2y + 3(x + 4y) = 1 + 3(9)
  • 2y + 12y = 1 + 27
  • 14y = 28
  • y = 2

<u>Find x:</u>

  • x + 4*2 = 9
  • x + 8 = 9
  • x = 1

The point is (1, 2)

3) <u>Line 2 and line 3</u>

  • 2x + y = 11
  • x + 4y = 9

<u>Double the second equation and subtract the equations:</u>

  • 2x + y - 2(x + 4y) = 11 - 2(9)
  • y - 8y = 11 - 18
  • - 7y = - 7
  • y = 1

<u>Find x:</u>

  • x + 4*1 = 9
  • x + 4 = 9
  • x = 5

The point is (5, 1)

8 0
2 years ago
-12 = 6+ 2/3 y<br><br><br> Pleaseeeee help me ❤️
jek_recluse [69]
The answer is Y=-27 hope it helps
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3 years ago
un aliaj de platina are titlu de 0,800 si contine 1968 g de platina pura. Aflati masa aliajului. E urgent!!!!!!!!!!!!!!!!!!!1
MrRissso [65]

așa că nu sunt sigur ce vrei să spui ce este întrebarea?
7 0
3 years ago
At Ralph's fruitstand three apples cost of $.90 you want to buy seven apples how much will they cost
Nata [24]
1 apple is $.30. $.30 times 7 = $2.10. 
3 0
3 years ago
Sec (of theta)=25/24<br> find cot(of theta)
Len [333]
If secant of theta = <span> <span> <span> 1.0416666667 </span> </span> </span> then
theta = 16.26 Degrees
cotangent of theta = 3.4286



4 0
3 years ago
Read 2 more answers
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