Mathematics High School

Find the Surface Area:

A) 138 m^2
B) 304 m^2
C) 252 m^2
D) 75 m^2
E) 151 m^2

Answers

Answer 1

Answer:

151 m^2

Step-by-step explanation:

Given,

Height ( h ) = 10 m

Radius ( r ) = 2 m

To find : Surface Area

Here, the shape is cylinder.

Formula : -

Surface area of cylinder = 2πr ( r + h )

Note : -

The value of π is 3.14

Surface area of cylinder

= 2πr ( r + h )

= 2 x 3.14 x 2 ( 2 + 10 )

= 12.56 ( 12 )

= 12.56 x 12

= 150.72

= 151 m^2 ( approximately )

Related Questions

Solve the following equation x2+6x=27 x = and

Answers

Answer:

Step-by-step explanation:

Assuming the question is x^2 + 6x = 27x, subtract 6x from both sides. x^2 = 21x. Then, divide both sides by x and you get x= 0, 21

In order for a gear to work in a piece of machinery, the radius of the gear, r, must be greater than 4 cm, but not exceed 4. 1 cm. Which compound inequality represents the situation? r > 4 and r ≤ 4. 1 r > 4 or r ≤ 4. 1 r < 4 and r ≥ 4. 1 r < 4 or r ≥ 4. 1.

Answers

Answer:

see the attachment!

i hope this can help you!

IREADY
PRESS THE IMAGE BELOW WHICH ONE DO I SELECT?
50 POINTS!!!

Answers

Answer:

No, corresponding angles aren't congruent

Step-by-step explanation:

We have a transversal and lines intersecting with it.

The angle measures formed by the lines and the transversal are not all equal to each other.

Four of the angles measure 85° and one 79°.

These are corresponding angles (the angles which occupy the same relative position at each intersection where a straight line, transversal, crosses two or more others).

If corresponding angles are equal, the lines are parallel.

In our case all the lines intersecting the transversal are parallel apart from the one with different angle measure.

Therefore, correct answer choice is:

No, corresponding angles aren't congruent

4.

—-
——

help please

math geniuses pls help!!!

pls check other questions too!

Answers

Answer:

Always in the range zero to one

Step-by-step explanation:

Option c is the answer

Area of triangle = 24

Answers

Answer:

[tex]x=-2\pm2\sqrt13[/tex]

Step-by-step explanation:

The area of the triangle is;

[tex]A=\frac{1}{2} \times b\times h[/tex]

[tex]b=x+4[/tex]

[tex]h=x[/tex]

[tex]Area=A=24[/tex]

[tex]A=\frac{1}{2}\times[(x+4)\times x] \\24=\frac{x^{2} +4x}{2} \\24\times2=x^{2} +4x\\48=x^{2} +4x\\x^{2} +4x-48=0\\[/tex]

This can only be solved by the quadratic formula.

[tex]x=\frac{-b\pm\sqrt {b^{2}-4ac }}{2a}[/tex]

where;

[tex]a=1\\b=4\\c=-48[/tex]

and we get,

[tex]x=-2\pm2\sqrt13[/tex]

What is limit of startfraction x squared x minus 12 over x squared minus 3 x endfraction as x approaches 3? 0 startfraction 7 over 3 endfraction 4 dne

Answers

The limit of the expression [tex]f(x) = \frac{x^2 - 12}{x^2 - 3}[/tex]a s x approaches 3 is -1/2

How to determine the limit?

The expression is given as:

[tex]f(x) = \frac{x^2 - 12}{x^2 - 3}[/tex]

As the variable x approaches 3, the limit is represented as:

[tex]\lim_{x \to 3} f(x)[/tex]

So, we have:

[tex]\lim_{x \to 3} = \frac{3^2 - 12}{3^2 - 3}[/tex]

Evaluate the exponents

[tex]\lim_{x \to 3} = \frac{-3}{6}[/tex]

Evaluate the quotient

[tex]\lim_{x \to 3} = -\frac{1}{2}[/tex]

Hence, the limit of the expression as x approaches 3 is -1/2

Answers

Answer:

2340

Step-by-step explanation:

4590*.51=2340.9

Because you can not have .9 people, you round down to 2340

2341 students are in the freshman class.

What is percentage?

Percentage is defined as ratio expressed as a fraction of 100.

Total no. of students in the freshman Economics majors = 4590

51% students of a university's freshman class,

Let x no. of students in the freshman class,

x = 51/100×(4590)

x = 0.51×(4590)

x = 2340.9

x = 2340.9 ≈ 2341

Hence, 2341 students are in the freshman class.

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Jayson uses a hose to fill a 45-gallon tank with water in 15 minutes. How many gallons of water does Jayson add to the tank per minute?

Answers

3 because 3 times 15 is 45. :) thank you for letting me answer. Good luck

Find the inverse of the function f(x) = 2x - 4.
O
8(x) = -1/x--1/4
O
8(x) = -x-1-1/
O g(x) = 4x + 2
O
1
g(x) = = x + 2

Answers

Answer:

y = 4 - x / 2

Step-by-step explanation:

y = 2x - 4

x = 2y - 4

y = 4 - x

----------

3. Which model shows the fraction
A.
B.
C.
D.
as a multiple of a unit fraction?

Answers

Answer:

A is the answer

Step-by-step explanation:

because 3 is shaded

and there is 5 rows with three shaded

The radius of a circle is 10 m. find its area to the nearest whole number.

Answers

[tex]\rule{200}{1}\\\dashrightarrow\large\textsf{\textbf{\underline{Given question:-}}}[/tex]

The radius of a circle is 10 m. Find its area to the nearest whole number.

[tex]\dashrightarrow\large\textsf{\textbf{\underline{Answer and how to solve:-}}}[/tex]

We're asked to find the area of the circle, which we can find using the following formula:-

[tex]\bold{Area_{(circle)}=\pi r^2}[/tex]

Where:-

π = pi [3.14...]r=radius (10 m)

What we need to do to find the area:-

[tex]\dagger[/tex] Substitute 10 for r and 3.14 for π:-

[tex]\hookrightarrow\sf{A=3.14\times(10^2)}[/tex]

[tex]\bigstar[/tex] On simplification,

[tex]\bold{A=3.14\times100}[/tex]

[tex]\bigstar[/tex] On further simplification,

[tex]\bold{A=314}[/tex]

[tex]\bigstar[/tex] The Area is:-

[tex]\bold{A=314\:m^2}[/tex]

[tex]\square\!\!\!\!\!\!\bigstar[/tex] Note:- Area is always measured in units² (units squared)

Good luck with your studies.

[tex]\rule{300}{3}[/tex]

In the shape below, find the value of d, rounded to one decimal place.

Answers

Answer: 128.7

Step-by-step explanation:

What is the value of the expression below when t = 6?

Answers

Answer:

C. -18

I hope that this helped you.

Answer:

C. -18

Step-by-step explanation:

The value of the expression is found by substituting the given value for the variable and following the Order of Operations to evaluate it.

[tex]\dfrac{2(4(6-t)^2+t-3(t+5))}{3}\qquad\text{given}\\\\=\dfrac{2(4(6-6)^2+6-3(6+5))}{3}=\dfrac{2(4(0^2)+6-3(11))}{3}=\dfrac{2(6-33)}{3}\\\\=\dfrac{2(-27)}{3}=\dfrac{-54}{3}=\boxed{-18}[/tex]

_____

Additional comment

In this instance, the Order of Operations can be shortcut a bit by factoring 3 from the numerator and denominator early in the evaluation.

= 2(2 -11) = 2(-9) = -18

PLS HELP WILL MARK BRAINLIEST
Spencer is draining his swimming pool. The expression - 720x + 4,000 represents the amount of water, in gallons, remaining in the pool
after x hours. What does 4,000 represent?
A the time left until the pool is empty

B the gallons of water initially in the pool
Cthe total hours required to drain the pool
D the amount of water being drained per hour

Answers

Using linear function concepts, it is found that the representation of the value of 4,000 is given by:

B the gallons of water initially in the pool.

What is a linear function?

A linear function is modeled by:

y = mx + b

In which:

m is the slope, which is the rate of change, that is, by how much y changes when x changes by 1.b is the y-intercept, which is the value of y when x = 0, and can also be interpreted as the initial value of the function.

In this problem, the amount of water in the pool after x hours is modeled by:

y = -720 x + 4000.

4000 is the y-intercept, which is the initial amount of water in the pool, hence option B is correct.

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I need the answers asap thank you

Answers

Answer:

1) C (Not Sure as Much as I do for #2 & #3)
2) D
3) C

Please help...a counselor wishes to examine the benefits of a parenting class on parenting
skills. he decides to administer a questionnaire to the 10 parents who have
attended the most recent class. how could this study be improved?
select all that apply.
a. administer a questionnaire to parents who have not attended the
class.
b. use a random sample of all patients, who have attended the
class.
c. increase the sample size.
d. give parents some sample responses, prior to administering the
questionnaire.

Answers

the answer is B
explanation

Draw a line of best fit on the graph below. Explain how you knew where to draw the line of best fit.
Where does your line of best fit cross the y-axis?

Answers

Answer:

The line should be a negative sloping line that looks something like this:

Ralph needs 1/4 cup of butter to make a cake. He has 5 cups of butter. How many cakes can Ralph make using 5 cups of butter? A) 1 B) 5 C) 20 D) 4

Answers

Answer:

Step-by-step explanation:

4 4 cm 2 cm 4 cm 4 cm
What is the area of the polygon?

Answers

Answer:

512

Step-by-step explanation:

or is the 4 4 a fraction? if it was a fraction, it is 32 bc 4 4 = 1.

Three friends just out of culinary school have applied for a loan to open a new restaurant in the heart of New York City. The bank gives them a loan in the amount of 1.3 million dollars. The three friends estimate that their business will be able to make a profit of approximately $0.7 million per year. They keep track of their debts, profits, and overall financial status on a balance sheet. They enter the debt as a negative value and all profits as positive values. Define a unit for the amount of time since the company began. Enter a variable for the amount of time since the company began and use this variable to write an expression for the expected financial status. 1. What was the financial status of the company when it began? 2. If the estimates were correct, how many years was it before the financial status of the company was 14.8 million dollars?

Answers

Answer:

The answer is 0.3 million per year

Step-by-step explanation:

Solve for X. Round to the nearest tenth, if necessary.

Answers

Answer:

still don't get it

Step-by-step explanation:

but please write it in an understanding meaning

First one to answer, i will mark brainlist

Answers

Answer:

WX < YW < XY

Step-by-step explanation:

Angle sum property

Sum of all angles of triangle = 180

114 + 53 + ∠y = 180

167 + ∠Y = 180

∠Y = 180 - 167

∠Y = 13

The side opposite to smallest angle is shortest.

Angles in ascending order: ∠Y < ∠X < ∠W

Sides in ascending order: WX < YW < XY

The area of a rectangle is 49d + 91
The length is an integer higher than 1, but is a known number.
Find the width of the rectangle.

Answers

Assuming that L and d are known numbers, we can write.

[tex]W = \frac{49d + 91}{L}[/tex]

How to get the width of the rectangle?

Remember that for a rectangle of width W and length L, the area is given by:

A = L*W

In this case, the area is 49d + 91, and the length is a known number, so we know the value of L.

Then we can write:

A = L*W = 49d + 91

To get the value of W, we need to isolate it on one side of the equation.

We can do that by dividing both sides by L.

[tex]W = \frac{49d + 91}{L}[/tex]

We assume that d and L are known, so with the above rational expression, we have W totally determined.

If you want to learn more about rational expressions:

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Need help please answer ASAP!

Answers

Answer:

27. (4) 4 in

28. (2) 13

Step-by-step explanation:

Question 27

Volume = (side length)³64 = (side length)³side length = ∛64side length = 4 in(4) 4 in

Question 28

Let the number be n7n - 6 = 857n = 91n = 13(2) 13

On a coordinate plane, kite w x y z has points (1, 1), (3, 4), (5, 1), (3, negative 3). kite wxyz is graphed on a coordinate plane. what is the area of the kite? 7 square units 8 square units 14 square units 16 square units

Answers

The area of the kite will be C. 14 square units.

How to calculate the area?

From the information given, on coordinate plane, kite w x y z has points (1, 1), (3, 4), (5, 1),

The area of the kite will be;

= 2(1/2 × 7 × 2)

= 2 ×7

= 14 units²

Therefore, the area of the kite will be 14 square units.

In conclusion, the correct option is C.

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Answer:

14 square units

Step-by-step explanation:

Explain how you can determine which angle of a scalene triangle is the largest and which is the smallest.

Answers

Answer:

use The Law of Cosines first to calculate the largest angle. then use The Law of Sines to find another angle. and finally, use the angles of a triangle add to 180° to find the last angle.

Step-by-step explanation:

The scalene triangle is a type of triangle with sides of three different lengths and angles of three different measurements. In every scalene triangle, the shortest side is opposite the smallest angle and the longest side is opposite the largest angle.

mike has some candies and gave 15 of them to his friend, Late his mom bought him twice the amount of candies he had at the beginning how many candies did he have in the beginning if he has 60

Answers

Answer:

Step-by-step explanation:

gave 15 to his friend 30-15=15 his mom bought mom 60 candies so 30

Y=|x+2|-1

Y<0

Please help ASAP!

Answers

Answer:

x=-1

Step-by-step explanation:

x+2-1=0

-1+2=1

1-1=0

y=0

Answer:

X = -2

Step-by-step explanation:

Y = | (-2) + 2 | - 1

Y = |0| - 1

y = -1

Dog in a Ditch
Oscar and Rasheed are identical twins. They are both 6 feet tall. They are on opposite sides of
a ditch that is 30 feet wide. Their dog, Earl, is at the bottom of the ditch and is walking away
from Oscar towards Rasheed. Earl can get out if he wants to. When Oscar looks at Earl, his line
of sight makes a 75° angle below the horizontal. When Rasheed looks at Earl, his line of sight
makes a 40° angle below horizontal. Earl has walked % of the way across the ditch. How deep
is the ditch?

Answers

The ditch is 14.54 feet deep.

What is application of Trigonometry?

Trigonometry can be used to roof a house, to make the roof inclined ( in the case of single individual bungalows) and the height of the roof in buildings etc. It is used naval and aviation industries. It is used in cartography (creation of maps). Also trigonometry has its applications in satellite systems.

As, both brother have height of 6 feet.

We will use the concept of application of trigonometry to find the depth of ditch.

The explanation is attached below

Now, by solving both equations we get

0.8391y= (2+√3)(30-y)

4.5711y=111.96

y= 24.49 feet.

Now,

x= 14.54 feet.

Hence, the depth of ditch is 14.54 feet.

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If an airplane descends 15 feet every 1.45 seconds, how far would the airplane travel in three and a half minutes? The equation is y=-40x+58

Answers

[tex]\qquad\qquad\huge\underline{{\sf Answer}}[/tex]

Here we go ~

The air plane descends 15 feels every 1.45 seconds, so it's unit rate is :

[tex]\qquad \sf \dashrightarrow \: \dfrac{15}{1.45} \: \: ft / sec[/tex]

Now we have to calculate the descent in 3.5 minutes ~

[tex]\qquad \sf \dashrightarrow \: \dfrac{15}{1.45} \: \: \times 3.5 \times 60[/tex]

[tex]\qquad \sf \dashrightarrow \: 2172.41 \: \: ft[/tex]

So, the airplane descends 2172.41 feels in three and a half minutes ~

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Find the Surface Area: A) 138 m^2 B) 304 m^2 C) 252 m^2 D) 75 m^2 E) 151 m^2

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Find the Surface Area:

A) 138 m^2
B) 304 m^2
C) 252 m^2
D) 75 m^2
E) 151 m^2