3) What is the lateral surface area of the figure below? 12 mi 1 5 mi 5 mi 13 mi

Komok [63]

Answer: if im not wrong it would be 1583/1000

Step-by-step explanation:

4 0

2 years ago

"a u.S. 1-cent coin (a penny) has a diameter of 19 mm and a thickness of 1.5 mm". Assume the coin is made of pure copper, whose

choli [55]

the question is Calculate the value of the copper in the coin

Step 1

Find the volume of the coin

we know that

the volume of a cylinder is equal to

$V=\pi r^{2}h$

where

r is the radius of the coin

h is the thickness of the coin

in this problem we have

Diameter=19 mm=1.9 cm

r=D/2------> r=1.9/2=0.95 cm

h=1.5 mm=0.15 cm

substitute the values in the formula

$V=\pi*0.95^{2}*0.15=0.425\ cm^{3}$

Step 2

Find the mass of copper in the coin

we know that

the density is equal to

$Density=mass/volume$

Solve for the mass

$mass=Density*volume$

we have

$Density=8.9\ gr/cm^{3}\\Volume=0.425\ cm^{3}$

substitute in the formula

$mass=8.9*0.425=3.785\ gr$

Step 3

Find the cost

we know that

the market price of the copper is $2.15 per pound

1 pound=453.592 grams

convert gram to pounds

3.785 gr=3.785/453.592=0.0083 pounds

0.0083*$2.15=$0.018=$0.02

therefore

the answer is

$0.02

3 0

3 years ago

Me pueden ayudar a resolver por método de sustitución porfa. {5x+7y=-1 {-3x+4y=-24

disa [49]

Answer:

x = 4 and y = -3

Question;

Me pueden ayudar a resolver por método de sustitución porfa.

Translation: Can you help me to solve by please substitution method.

{5x+7y=-1

{-3x+4y=-24

Step-by-step explanation:

Given the simultaneous equation.

5x+7y=-1 .....1

-3x+4y=-24 .....2

From equation 2, making y the subject of formula.

4y = -24 + 3x

y = (-24+3x)/4 ...... 3

Substituting the equation 3 into equation 1

5x+7((-24+3x)/4) = -1

Multiply through by 4

20x + 7(-24+3x) = -4

20x - 168 + 21x = -4

41x -168 = -4

41x = -4 + 168

41x = 164

x = 164/41 = 4

x = 4

Substituting x = 4 into equation 3

y = (-24+3(4))/4

y = (-24+12)/4

y = -12/4

y = -3

3 0

3 years ago

Read 2 more answers

At the kansas city airport, a group of pilots for skyways and yellow jet airlines were asked whether their flights were flying e

DiKsa [7]

The joint frequency that has the most flights is the Yellow Jet, going east. Option C. This is further explained below.

<h3>What is Frequency?</h3>

Generally, the occurrence per period with which something happens throughout a certain time period or in a given sample.

In conclusion, a beast with entries 30, 65, 65. the third column is labeled west with entries 33, 34, 67. the fourth column is labeled total with entries 63, 69, 132. Hence the Yellow Jet, going east. has the most flight.