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andrew11 [14]
2 years ago
9

What is the constant of proportionality for the question (-4x + 8y = 0)?​

Mathematics
1 answer:
zubka84 [21]2 years ago
8 0

Answer: 1/2

Step-by-step explanation:

1) Put the equation into y=kx form

- add 4x to both sides

- divide by 8 on both sides to get y=1/2x

2) k is the constant of proportionality

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If x varies as y and if x=20 when y=9 , find x when y=18​
andrezito [222]

Answer:1/2 y

Step-by-step explanation:

We can solve this using ration reasoning:  

x

2

x

1

=

y

2

y

1

Explanation:

If  

x

varies directly with  

y

(written  

x

∝

y

), then doubling  

y

means doubling  

x

, so the rations of final values and initial values will be the same:

x

2

x

1

=

y

2

y

1

In this case,

x

2

9

=

24

18

x

2

=

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⋅

24

18

=

12

Or, intuitively, if  

x

∝

y

and  

x

=

9

when  

y

=

18

, we can conclude that

x

=

1

2

y

and  

1

2

of 24 is 12.

3 0
3 years ago
I need help pleaseeee
algol13

Answer:

Option A

Step-by-step explanation:

Thisbis because when two of them are hanged on the same side it means that it's addition. (Addition of weight)

8 0
2 years ago
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vichka [17]

Answer:

12.43ft

Step-by-step explanation:

 From the given diagram, we simply apply the sin rule

According to the sine rule

=

   y is the side y

    y° = (90 - 43) = 47

    z = 17

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Input the parameters and solve;

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       ysin 90 = 17 sin 47

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6 0
3 years ago
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Aliun [14]

Answer: i think the answer is (A)

Step-by-step explanation:

I recalculated and the other person was correct, sorry for the mix up

7 0
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Sphinxa [80]
 first most important effect is the erosion and the second most important effect is weathering.
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