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rewona [7]
2 years ago
9

Kevin is 6 years older than Timothy. 4 years ago, Kevin was twice as old as Timothy. Find their present ages.

Mathematics
1 answer:
Damm [24]2 years ago
3 0

Answer:

Kevin is 16; Timothy is 10

Step-by-step explanation:

k= Kevin's age

t=Tim's age

k=t+6

k-4=2(t-4)

k-4=2t+8

(t+6)-4=2t-8   :substitution

t+2=2t-8

t=10

k=t+6

k=10+6

k=16

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3 years ago
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2 years ago
The lines y1 = 2x - 6, y2 = -3x + 4, y3 = -1/2x + 4 are the sides of a right triangle. Find the perimeter and area of the triang
sergiy2304 [10]

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<h3>Perimeter and area of the triangle giving the equation of a line</h3>

First we will plot the giving lines, determine the point of intersection and then use the Pythagoras theorem to determine the dimension of the right triangle.

From the given equation of the lines, the points of intersection of the line are (x₁, y₁) = (- 0.4, 5.2), (x₂, y₂) = (-0.8, 4.4) and (x₃, y₃) = (0, 4)

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8 0
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Can someone help me with this please
erastova [34]

Not positively sure but I believe it goes like this

Answer: 9x+26+5x=180

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14x=154

X=15

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