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Savatey [412]
3 years ago
12

Explain why 1/2 is not equivalent to 2/5

Mathematics
2 answers:
melomori [17]3 years ago
7 0
Onen way, is to know that
if a=b and c=d, then a/c=b/d, and thn (a/c)(d/b)=1

the real way would be to make denomenators the same

one way would be to firs assume they are equal then show it is false
1/2=2/5
times right sides by 5/5 and left by 2/2
5/10=4/10
times 10 both sides
5=4
flase

it is not equal
Karo-lina-s [1.5K]3 years ago
4 0
If you were to make the denominators equivalent, you'd see they aren't equivalent.

1/2=5/10

2/5=4/10

...Hope that helps
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tamaranim1 [39]

Step-by-step explanation:

Since it's a direct variation

y = kx

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To find the value of y when x = –0.5 we must first find the relationship between the variables

When

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y = 2

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Divide both sides by 3

k =  \frac{3}{2}

So the formula for the variation is

<h3>y =  \frac{3}{2} x</h3>

When x = - 0.5 or - 1/2

y =  \frac{3}{2} ( -  \frac{1}{2} )

We have the final answer as

<h2>y =  -  \frac{3}{4}</h2>

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3 0
3 years ago
2/10 reading, 7/10 experiments, what is the fraction of time left ?
BlackZzzverrR [31]

Total time = 10/10

So time left = 10/10 - 2/10 - 7/10

= 10/10 - 9/10

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7 0
3 years ago
Read 2 more answers
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ratelena [41]

The speed of the plane after it encounters the wind is C.285mph

<h3>How to calculate the speed of the plane when it encounters the wind?</h3>

Since the plane takes off from an airport on a bearing of 270° and travels at a speed of 320 mph it's velocity is v = (320cos270°)i + (320sin270°)j

= (320 × 0)i + (320 × -1)j

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Also, the plane encounters a 35 mph wind blowing directly north. The velocity of the wind is v' = 35j mph

So, the velocity of the plane after it encounters the wind is the resultant velocity, V = v + v'

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So, the speed of the plane after it encounters the wind is the magnitude of V = |-285j| mph

= 285 mph

So, the speed of the plane after it encounters the wind is C.285mph

Learn more about speed of plane here:

brainly.com/question/3387746

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8 0
2 years ago
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skad [1K]

Answer:

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Step-by-step explanation:

1 2/3 - 2 1/3

5/3 - 2 1/3

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3 0
3 years ago
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Step-by-step explanation:

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