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yulyashka [42]
2 years ago
13

Use the number line to show and explain why 4/10 ÷ 2 and 4/10 × 1/2 both equal 2/10

Mathematics
1 answer:
Vesna [10]2 years ago
4 0

Step-by-step explanation:

When you divide by a number, you basically are multiplying by the reciprocal

The reciprocal of 2 is 1/2

4/10 ÷ 2 = 4/10 × 1/2 = 2/10

4/10 × 1/2 = 2/10

Using a number line,

Start at 4/10 and move down by 2 until you reach 0

Start at 4/10 and move up by 1/2 from 0 until you reach 4/10

(Count the number of humps)

Both will be the same

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Answer:

I got (1,2).

Step-by-step explanation:

Process of elimination:

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Plug 2 into second equation for Y to get x=1

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2 years ago
Select the correct answer. Sean and Colleen are raking leaves in their yard. Working together, they can clear the yard of leaves
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Answer:

40 minutes

Step-by-step explanation:

Let c represent the number of minutes it would take colleen to finish the job when he is working alone. Hence, it can be represented by the equation:

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Solving the quadratic equation to get c gives:

c = -12 and c = 40

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It would take colleen 40 minutes to clear the yard of leaves alone

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I'm not very good at algebra I need help with this lol
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I need a question ok this is the a question
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Step-by-step explanation:

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