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suter [353]
3 years ago
5

5 x (8-4) ÷ 4 - 2= Show work

Mathematics
1 answer:
qaws [65]3 years ago
4 0

Answer: 3

Step-by-step explanation:

5 x (8-4) / 4 - 2

5 x 4 / 4 - 2

20 / 4 - 2

5 - 2

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Total checkers = 2 + 6 = 8
P(black, then red) = (6/8)(2/7) = 3/14

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Step-by-step explanation:

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3 years ago
What is the product of (t +6) and (t+ 3)?
larisa86 [58]
(t+6) + (t+3) = 2x + 9
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3 years ago
7.find the equation of a circle with one of the diameters x+2y+8=0and passing through the intersection of a circle x²+y²+2=0 and
ozzi

Answer:

  • See below

Step-by-step explanation:

<u>Find the intersection of circles</u>

  • x² + y² + 2x = 0 and
  • x² + y² - 3y = 0

<u>Subtract the equations to find:</u>

  • 2x = -3y ⇒ y = -2/3x

<u>By substitution find the points:</u>

  • (0, 0) and (-1.385, 0.923)

<u>Find midpoint between these two points:</u>

  • x = (0- 1.385)/2 = -0.6925 , y = (0 + 0.923)/2 = 0.4615

<u>Find perpendicular bisector passing through this point:</u>

  • y - 0.4615 = 3/2(x + 0.6925)
  • y = 1.5x +  0.4615 + 1.5(0.6925)
  • y = 1.5x + 1.50025

<u>Find intersection of the lines, it is the center:</u>

  • y = 1.5x + 1.50025
  • x + 2y + 8 = 0

<u>Solving we get:</u>

  • x = -2,75, y = -2.625

<u>Find radius, the distance from center to point (0, 0) and get equation of circle:</u>

  • (x + 2.75)² + (y + 2.625)² = (0 + 2.75)² + (0 + 2.625)²
  • x² + 5.5x + y² + 5.25y = 0
  • 4x² + 22x + y² + 21y = 0
  • 4x² + 4y² + 22x + 21y = 0

4 0
3 years ago
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Ро
hammer [34]

Answer:

60

Step-by-step explanation:

ingressos: 55 x 2 = 110

25 x 2= 50  Tax

110+50=160 total

160-100= 60  

7 0
3 years ago
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