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konstantin123 [22]
3 years ago
9

Please help me on this now.​

Mathematics
1 answer:
alexandr1967 [171]3 years ago
3 0

Answer:

the frist one is 2 the second on is 3.5 and the third one is 3 and the last on is 2.9

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Calculate the volume of a cylinder of radius 5cm and height 14cm (take pie 22/7)
HACTEHA [7]

Answer:

<em>Volume of a cylinder = 1,100cm³</em>

Step-by-step explanation:

<em>Volume</em><em> of</em><em> a</em><em> cylinder</em><em> </em><em>=</em><em> </em><em>πr²</em><em>h</em>

<em>Given</em>

<em>π </em><em>=</em><em> </em><em>2</em><em>2</em><em>/</em><em>7</em>

<em>r </em><em>=</em><em> </em><em>5</em><em>c</em><em>m</em>

<em>h </em><em>=</em><em> </em><em>1</em><em>4</em><em>c</em><em>m</em>

<em>Substitute</em><em> the</em><em> </em><em>given</em><em> </em><em>information</em><em> </em><em>in</em><em> the</em><em> </em><em>problem</em><em>.</em>

<em>Volume</em><em> of</em><em> a</em><em> cylinder</em><em> </em><em>=</em><em> </em><em>2</em><em>2</em><em>/</em><em>7</em><em> </em><em>×</em><em> </em><em>(</em><em>5</em><em>c</em><em>m</em><em>)</em><em>²</em><em> </em><em>×</em><em> </em><em>1</em><em>4</em><em>c</em><em>m</em>

<em>Volume</em><em> of</em><em> a</em><em> cylinder</em><em> </em><em>=</em><em> </em><em>2</em><em>2</em><em>/</em><em>7</em><em> </em><em>×</em><em> </em><em>2</em><em>5</em><em>c</em><em>m</em><em>²</em><em> </em><em>×</em><em> </em><em>1</em><em>4</em><em>c</em><em>m</em>

<em>Volume</em><em> of</em><em> a</em><em> </em><em>cylinder </em><em>=</em><em> </em><em>1</em><em>,</em><em>100c</em><em>m</em><em>³</em>

4 0
2 years ago
Can somebody please help me I will mark u brilliant
givi [52]

Answer:

2/7 + (-3/4) + (-2/7) + 4/3

If we look at 2/7 and (-2/7), we can see that both of them combined will get you a result of 0, so let's do that first.

2/7 + (-2/7) = 0

Now we're left with;

(-3/4) + 4/3

Make sure to convert both fractions into having a common denominator,

[They both have a common denominator of 12], so:

(-3/4) = (-9/<u>12</u>)

4/3 = 16/<u>12</u>

Add them:

(-9/12) + 16/12

16/12 - 9/12

= <u>7/12</u>, which cannot further be simplified.

3 0
2 years ago
A right circular cylinder is changing shape. The radius is decreasing at the rate of 2 inches/sec while it's height is increasin
Savatey [412]

Answer:

<h3> 552.640in³/s</h3>

Step-by-step explanation:

Volume of a cylinder is expressed as;

V = \pi r^2 h

\frac{dV}{dt} = \frac{dV}{dr} \frac{dr}{dt} +\frac{dV}{dh} \frac{dh}{dt}

dV/dr = 2πrh

dV/dr = 2π(4)(6)

dV/dr = 48(3.14)

dV/dr = 150.72in³/m

dV/dh = πr²

dV/dh = 3.14(4)²

dV/dh = 50.24

Given

dh/dt = 5in/s

dr/dt = 2in/s

Substitute into the dV/dt

dV/dt = 150.72(2)+50.24(5)

dV/dt = 301.44 + 251.2

dV/dt= 552.640in³/s

The volume is changing at the rate of  552.640in³/s

7 0
2 years ago
For the figures shown, FHJL ~ NPRS. The scale factor applied to FHJL to create NPRS is 4 to 3.
GrogVix [38]

Remark

For every 3 units for NP will be 4 units. You can set up a proportion.

\dfrac{3}{4} = \dfrac{45}{NP}\text{Cross Multiply}

3*NP = 4*45

3*NP = 180 Divide by 3

NP = 180/3

NP = 60

Answer C

7 0
3 years ago
You toss a coin a randomly selecte a number from 0 to 9. What is the probability of getting tails and selecting a 9?
In-s [12.5K]
First lets find the probability of landing tails. Because there is 1 way to get tails and 2 possible outcomes, the probability is 1/2.

Now, lets find the probability of selecting a 9. Since this includes 0, there are 10 possible outcomes and 1 way to get a 9, so the probability is 1/10.

To find them combined, multiply:

1/2 * 1/10
1/20
0.05

Hope this helps!


4 0
3 years ago
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