VCE Maths questions help (1 Viewer)

[boredsatan]

What is the cost per 100 mL of soft drink if 2.25 L of the soft drink cost $1.90

 

[boredsatan]

anyone?

 

[boredofstudiesuser1]

What is the cost per 100 mL of soft drink if 2.25 L of the soft drink cost $1.90

approx. 8cents (to nearest cent)

 

[boredsatan]

approx. 8cents (to nearest cent)

How would you work it out. I'm a little rusty with these kind of word problems

 

[boredofstudiesuser1]

How would you work it out. I'm a little rusty with these kind of word problems

Do you ever go to school?

How many 100mL in 2.25L?

2250/100
= 22.5

Then just divide the total price by 22.5

1.90/22.5 = 0.084444

= 8 cents

 

[boredsatan]

Do you ever go to school?

How many 100mL in 2.25L?

2250/100
= 22.5

Then just divide the total price by 22.5

1.90/22.5 = 0.084444

= 8 cents

Why are you asking me if I go to school or not. I thought I had to do 190/22.5 because it was converting from mL to L

 

[boredofstudiesuser1]

Why are you asking me if I go to school or not. I thought I had to do 190/22.5 because it was converting from mL to L

Because you're always posting in school hours.

But yeah, that works too, just remember you converted dollars into cents and that the 22.5 is how many 100mL are in 2.25L -> I wouldn't do it that way because the units get confusing

Then you get 8.4444

Which you have to remember is now in cents

 

[1729]

At what rate (in km/h) would a train be travelling if it covered 32.5 km in 15 minutes

 

[boredsatan]

Because you're always posting in school hours.

But yeah, that works too, just remember you converted dollars into cents and that the 22.5 is how many 100mL are in 2.25L -> I wouldn't do it that way because the units get confusing

Then you get 8.4444

Which you have to remember is now in cents

I didn't have school today

 

[boredofstudiesuser1]

I didn't have school today

You apparently never have school...

 

[boredsatan]

You apparently never have school...

what sort of a joke was that? It definitely wasn't funny

 

[boredsatan]

state the transformations from 1/x to 3/(x-1) + 2
Is it a dilation by factor of 3 from x axis or y axis?

 

[boredsatan]

state the transformations from 1/x to 3/(x-1) + 2
Is it a dilation by factor of 3 from x axis or y axis?

anyone?

 

[boredsatan]

anyone?

Any help would be greatly appreciated

 

[boredsatan]

Any help would be greatly appreciated

bump

 

[boredsatan]

y = a/(x-b)^2 + c
Given that the y intercept is (0,-1) and that an asymptote exists at y = 2, find the values of a, b, and c

 

[pikachu975]

y = a/(x-b)^2 + c
Given that the y intercept is (0,-1) and that an asymptote exists at y = 2, find the values of a, b, and c

You can find c = 2 considering that a/(x-b)^2 doesn't equal 0 so y can't equal c, and since y can't equal 2, then c = 2.

Not enough info to find a and b.

 

[boredsatan]

It is known that the straight line y = 4x-4 touches the curve y = x^2 at the point (2,4). Find the instantaneous rate of change of y with respect to x at the point (2,4) on the curve y = x^2

 

[InteGrand]

It is known that the straight line y = 4x-4 touches the curve y = x^2 at the point (2,4). Find the instantaneous rate of change of y with respect to x at the point (2,4) on the curve y = x^2

4

 

[Squar3root]

4

I was about to ask how you knew that straight away then i realized they gave you the value in the tangent anyways lol