Which statement is true about the graphs x = 2 and y=4?

Mathematics

1 answer:

AlladinOne [14]3 years ago

4 0

The statement A is true

This is because the coordinate intersection would be, naturally, when x = 2 and y = 4

You might be interested in

9. Jacob makes $10 for every lawn he mows, m. He owes his<br> brother $20.

Over [174]

Answer:

If jacob is broke then he needs to mow 2 lawns for $20 to pay his brother back.

Step-by-step explanation:

6 0

2 years ago

Read 2 more answers

Four balls of wool will make 8 knitted caps. How many balls of wool will malcolm need if he wants to make six caps?

Olenka [21]

I could be wrong but I think it is 2

7 0

3 years ago

Gravel is being dumped from a conveyor belt at a rate of 20 ft3/min, and its coarseness is such that it forms a pile in the shap

11Alexandr11 [23.1K]

Answer:

0.25 feet per minute

Step-by-step explanation:

Gravel is being dumped from a conveyor belt at a rate of 20 ft3/min. Since we are told that the shape formed is a cone, the rate of change of the volume of the cone.

$\dfrac{dV}{dt}=20$ ft^3/min$

$\text{Volume of a cone}=\dfrac{1}{3}\pi r^2 h$

Since base diameter = Height of the Cone

Radius of the Cone = h/2

Therefore,

$\text{Volume of the cone}=\dfrac{\pi h}{3} (\dfrac{h}{2}) ^2 \\V=\dfrac{\pi h^3}{12}$

$\text{Rate of Change of the Volume}, \dfrac{dV}{dt}=\dfrac{3\pi h^2}{12}\dfrac{dh}{dt}$

Therefore: $\dfrac{3\pi h^2}{12}\dfrac{dh}{dt}=20$

We want to determine how fast is the height of the pile is increasing when the pile is 10 feet high.

$h=10$ feet$\\\\\dfrac{3\pi *10^2}{12}\dfrac{dh}{dt}=20\\25\pi \dfrac{dh}{dt}=20\\ \dfrac{dh}{dt}= \dfrac{20}{25\pi}\\ \dfrac{dh}{dt}=0.25$ feet per minute (to two decimal places.)$