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4 years ago

Make x the subject 4x=y

Mathematics

1 answer:

Mandarinka [93]4 years ago

3 0

Answer:

x=y/4

Step-by-step explanation:

Simply divide by 4 to get x by itself

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Two classes have a total of 60 students. The students need to make teams of 8t

Step2247 [10]

Answer:

We have 7 complete teams

Step-by-step explanation:

Here, we have students preparing to make a team of 8 students per team. We now want to know how many complete teams they can make if they are a total of 60;

To get this, we need the multiples of 8;

we have;

8, 16 , 24 , 32, 40 , 48 , 56

So breaking it in 8s, we have;

8 8 8 8 8 8 8

We have 7 8s;

So there would be four left overs

3 0

3 years ago

The next train will arrive in 32 minutes and 30 seconds. In how many seconds will the next train arrive

sineoko [7]

You need to multiply the 30 with the 32

4 0

3 years ago

Read 2 more answers

The radius r(t)r(t)r, (, t, )of the base of a cylinder is increasing at a rate of 111 meter per hour and the height h(t)h(t)h, (

sp2606 [1]

Answer:

The volume is decreasing at a rate 20π cubic meter per hour.

Step-by-step explanation:

We are given the following in the question:

The radius is increasing at a rate 1 meter per hour.

$\dfrac{dr}{dt} = 1\text{ meter per hour}$

The height is decreasing at a rate 4 meter per hour

$\dfrac{dh}{dt} = -4\text{ meter per hour}$

At an instant time t,

r = 5 meter

h = 8 meters

Volume of cylinder =

$\pi r^2 h$

where r is the radius and h is the height of the cylinder.

Rate of change of volume is given by:

$\dfrac{dV}{dt} = \dfrac{d(\pi r^2 h)}{dt}\\\\\dfrac{dV}{dt} = 2\pi rh\dfrac{dr}{dt} + \pi r^2\dfrac{dh}{dt}$

Putting all the values we get,

$\dfrac{dV}{dt} = 2\pi (5)(8)(1) + \pi (5)^2(-4)\\\\\dfrac{dV}{dt} = 80\pi - 100\pi = -20\pi \approx -62.8$

Thus, the volume is decreasing at a rate 20π cubic meter per hour or 62.8 cubic meter per hour.

3 0

3 years ago

If f(x)=4x+7, what is the inverse of fx

irinina [24]

Answer:

f^-1(x) = 1/4 x - 7/4

Step-by-step explanation:

f(x)=4x+7

Inverse:

x = 4y + 7

4y = x - 7

y = 1/4 x - 7/4

Answer

f^-1(x) = 1/4 x - 7/4

5 0

4 years ago

2(4x+3)=2(3x+7)+4x what does x =

drek231 [11]

Answer:

x = -4

Step-by-step explanation:

8 0

3 years ago