3 years ago

What is the following sentence written as an expression and the product of 3 and 6to4

Mathematics

1 answer:

ValentinkaMS [17]3 years ago

4 0

one expression using a variable for the unknown is... x = (3)(6/4)

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What is the estimate of 119÷23.3

Crank

Your answer would be 5.10... Hope this helps :)

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2 years ago

A runner starts at the 2.0 meter line and runs to the 8.0 meter line in 2.4 seconds. What was their average velocity?

Ganezh [65]

Answer:

the averege is 2.34

duh

Step-by-step explanation:

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2 years ago

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,

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

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

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

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

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3 years ago

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HURRY what is the simplified form of the following expression? 25xy sqrt 81/625 x^2 y^2

DedPeter [7]

Answer:

Step-by-step explanation:

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3 years ago

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Lin is baking cakes. Each cake needs 34 cup of brown sugar, and Lin uses 412 cups of brown sugar for the entire batch of cakes.

Zanzabum

Answer:

Step-by-step explanation:

412 ÷ 34 = 12.1176...

Round down to 12 cakes

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2 years ago