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4 years ago

Need help someome help me plz

Mathematics

2 answers:

Snowcat [4.5K]4 years ago

4 0

Mapping diagram can help with relationship

elena55 [62]4 years ago

3 0

A mapping diagram shows relationships

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¡¡. PLEASE HELP !!!!

Artyom0805 [142]

The answer to question 3 is 4

6 0

3 years ago

The radius of the base of a cylinder is decreasing at a rate of 121212 kilometers per second. The height of the cylinder is fixe

WARRIOR [948]

Answer:

7536 $km^3/sec$

Step-by-step explanation:

Given that:

Rate of decreasing of radius = 12 km/sec

Height of cylinder is fixed at = 2.5 km

Radius of cylinder = 40 km

To find:

The rate of change of Volume of the cylinder?

Solution:

First of all, let us have a look at the formula for volume of a cylinder.

$Volume = \pi r^2h$

Where $r$ is the radius and

$h$ is the height of cylinder.

As per question statement:

$r$ = 40 km (variable)

$h$ = 2.5 (constant)

$\dfrac{dV}{dt} = \dfrac{d}{dt}\pi r^2h$

As $\pi, h$ are constant:

$\dfrac{dV}{dt} = \pi h\dfrac{d}{dt} r^2\\\Rightarrow \dfrac{dV}{dt} = \pi h\times 2 r\dfrac{dr}{dt} \\$Putting the values:$\\\Rigghtarrow\dfrac{dV}{dt} = 3.14 \times 2.5\times 2 \times 40\times 12 \\\Rigghtarrow\dfrac{dV}{dt} = 7536\ km^3/sec$

4 0

3 years ago

Is 2 a prime number?

Leokris [45]

Answer:

Yes.

Step-by-step explanation:

A prime number is a number that is ony divisible by itself and 1.

2 is only divisible by 2(=1) and 1 (=2)

3 0

3 years ago

Read 2 more answers

I have a question where I need to add the mixed numbers 5 3\8 and 3 2\5 using a model and number line I have absolutely no idea

VMariaS [17]

Answer:

$8\frac{31}{40}$

Step-by-step explanation:

In representing mixed numbers on a number line, we need first to pay attention to the denominators. Here, denominators are 8 and 5, their least common multiple is 40, so, we will need to cut up space between two numbers on the number line on 40 pieces. Also, we have 5 and 3 wholes at these mixed numbers, so, our answer is going to be greater than 8.

We will cut the space between 8 and 9 on a number line on 40 pieces, and we will add $\frac{3}{8}$ and $\frac{2}{5}$ and get :