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Schach [20]
3 years ago
12

Marta and Kim are sisters. Five years ago Kim's age was twice as great as martas age. If Marta is no m years old, what expressio

n represents Kim's age now?
Mathematics
1 answer:
Hitman42 [59]3 years ago
5 0

Answer:

y = 2m-5

Kim's age now is y = 2m-5

Step-by-step explanation:

Let m represent martas age now and y represent Kim's age now

Given;

Five years ago Kim's age was twice as great as martas age.

(y-5) = 2(m-5)

Solving for y;

y-5 = 2m-10

y = 2m-10+5

y = 2m-5

Kim's age now is y = 2m-5

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she has 10 pounds of potting soil.
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The point (x,y) is rotated 180 degrees counterclockwise about the origin. Write a rule to determine the coordinate of the image
bazaltina [42]

Answer:

  (x, y) ⇒ (-x, -y)

Step-by-step explanation:

There are a couple of ways you can go at this.

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  (x, y) ⇒ (-x, -y)

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2) The rule for a general rotation by angle α is ...

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For α = 180°, sin(α) = 0 and cos(α) = -1. This makes the rule for rotation by 180° be ...

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3 0
3 years ago
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Juli2301 [7.4K]
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Function A and Function B are linear functions. Compare the two functions and choose all that are correct.
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<em>More detailed working</em>

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