All categories

3 years ago

Which of the following statements is false?

Mathematics

1 answer:

gulaghasi [49]3 years ago

5 0

B is false. We know it can't be D, because that is a true statement. C is also true. Leaves A or B.

You might be interested in

Admission to the Hersheypark Theme Park in Hershey, Pennsylvania is $52.95 for an

shepuryov [24]

Answer:

42.95x + 21.95y

Step-by-step explanation:

5 0

3 years ago

16. The number of miles a car can be driven depends on the number of gallons in its tank. The

valentina_108 [34]

Answer:

Step-by-step explanation:

a cheap 22 * 22 is 44 so the answer should be 44 please don't trust me if I'm wrong I'm using the voice thing so yeah

5 0

2 years ago

8 star fruit cost $16. How many star fruit can you buy for $8?

kompoz [17]

Answer:

4 star fruit.

Step-by-step explanation:

16/8 = 2

each star fruit is 2 dollars

so 8/2 = 4

you can buy 4 star fruit for 8 dollars.

5 0

2 years ago

Read 2 more answers

The slope of y= 1/2x-7

Arisa [49]

The slope of y= 1/2x-7 is always positive because since the slope of this equation is “1/2”, 1/2 is always positive.

3 0

2 years ago

Read 2 more answers

Water is drained out of tank, shaped as an inverted right circular cone that has a radius of 4cm and a height of 16cm, at the ra

bearhunter [10]

Answer:

$\frac{dh}{dt}=-\frac{1}{2\pi}cm/min$

Step-by-step explanation:

From similar triangles, see diagram in attachment

$\frac{r}{4}=\frac{h}{16}$

We solve for $r$ to obtain,

$r=\frac{h}{4}$

The formula for calculating the volume of a cone is

$V=\frac{1}{3}\pi r^2h$

We substitute the value of $r=\frac{h}{4}$ to obtain,

$V=\frac{1}{3}\pi (\frac{h}{4})^2h$

This implies that,

$V=\frac{1}{48}\pi h^3$

We now differentiate both sides with respect to $t$ to get,

$\frac{dV}{dt}=\frac{\pi}{16}h^2 \frac{dh}{dt}$

We were given that water is drained out of the tank at a rate of $2cm^3/min$

This implies that $\frac{dV}{dt}=-2cm^3/min$ .

Since we want to determine the rate at which the depth of the water is changing at the instance when the water in the tank is 8cm deep, it means $h=8cm$ .

We substitute this values to obtain,

$-2=\frac{\pi}{16}(8)^2 \frac{dh}{dt}$

$\Rightarrow -2=4\pi \frac{dh}{dt}$

$\Rightarrow -1=2\pi \frac{dh}{dt}$

$\frac{dh}{dt}=-\frac{1}{2\pi}$

3 0

3 years ago

Read 2 more answers