Work out the surface area of this cylinder radius 2cm and height 4cm pls help​

Answers

Answer 1

Step-by-step explanation:

surface area of cylinder is

2×pi×r (h+r)

2×22/7×2 (4+2)

88/7 (4+2)

75.4 cm square


Related Questions

solve for x in simplest rational form!! thx!

Answers

Answer:

X = 17

Step-by-step explanation:

Answer:

x = 17

Step-by-step explanation:

x^2 = 15^2 + 8^2 = 225+64=289

x = 17

Ms. Kumar has a checking account at the bank. If the account balance ever falls below zero, the bank charges her a fee of $5.95 per day. Today, the balance in Ms. Kumar's account is -$2.67. If she does not make any deposits or withdrawals, what will be the balance in her account after 2 days?

Answers

Answer:

-14.57

Step-by-step explanation:

5.95×2=11.90 (for the fee in 2 days) 11.90+2.67=14.57 and sense she owes money it would be -14.57

Ice cream sandwiches are wrapped in white paper before they are put in a box to be sold. How many ice cream sandwiches can be wrapped with 500 square inches of paper?

Answers

Answer:

9.6

Step-by-step explanation:

HELP QUICK!! solve by substitution and show work please

Answers


Solve for the first variable in one of the equations, then substitute the result into the other equation.
Point Form:



x= 1, y= -4

Simplify the following radicals. 1. √16 2. √17 3. √18 4. √19 5. √20

Answers

Answer:

Step-by-step explanation:

[tex]1) \sqrt{16}= \sqrt{4*4}=4\\\\\\2) \sqrt{17}[/tex]

This is the simplest form as 17 is a prime number.

[tex]3) \sqrt{18}= \sqrt{2*3*3} = 3 \sqrt{2}\\\\\\4) \sqrt{19}[/tex]

19 is a prime number. so it is the simplest form.

[tex]5) \sqrt{20}= \sqrt{2*2*5}=2 \sqrt{5}[/tex]

can you put this into one sentence The Soviet team dominated the second period. The Americans scored twice in the last period. The Americans finally took the lead.

Also put two of these words in it Although or so unless.

40 points

Answers

the americans scored twice in the last period although the soviet team dominated second period, after that the americans finally took the lead

(this is english not math change your question when you have to do this again)

what do mathematicians do after a snowstorm

Answers

mathematicians make snow angels

of the 19 total sloths that were spotted how many were not seen in the 30 - 39 interval

Answers

Answer:

9

Step-by-step explanation:

Answer:

9

Step-by-step explanation:

39 - 30 = 9

What is the solution to this inequality 10 X +18 < -2? A--x>-2. B--x <-2. C--x>2 D--x < 2

Answers

To solve this problem we start with the following 10x+18<-2. Then we will minus 18 off both sides leaving us with 10x<-20. We can now divide by 10 giving us x<-2. So the answer is B

3xdegree+20degree=2xdegree-5degree sorry there is no degree sign so wrote the spelling of degree and x(it is x)

Answers

Answer:

-25

Step-by-step explanation:

3xdegree+20degree=2xdegree-5degree sorry there is no degree sign so wrote the spelling of degree and x(it is x)

We are to find x

3x + 20 = 2x - 5

Collect like terms

3x - 2x = -5 - 20

x = -25

(functions) The debate club started with 3 students. The number
of students participating in the club doubles every
year. How many students will participate in debate
club after four years?
Please type your equation as well as your final answer and any steps in between.

Answers

Answer:

24

step by step:

3×2=6

6×4=24

Jamal throws a bean bag into the air. This graph shows the height of the bean bag, h, in feet after t seconds.

The graph shows a parabola which opens downwards. The horizontal axis is labeled t and ranges from zero to two. The vertical axis is labeled h and ranges from zero to fourteen. The curve begins at zero, midway between four and six, then moves upwards until a point midway between zero point five and one, fourteen, then moves downwards until stopping at the t-axis at a point between one point five and two, zero.

What is the meaning of the t-intercept?


The bean bag is released when t equals zero.


The bean bag is thrown from a height of 5 feet.


The bean bag hits the ground after 1.7 seconds.


The bean bag has a speed of 1.7 feet per second when it lands.

Answers

Answer:

Step-by-step explanation:

Evaluate the function h(t)= t2 - 8t+12 at t=0. Then plot the point on the graph.

Answers

Answer:

Step-by-step explanation:

h(t) = t2 - 8t + 12

Putting value of t = 0

h(0) = (0)2 - 8(0) + 12

= 0 - 0 + 12

= 12

Answer:

i'm sorry i don't know it

Step-by-step explanation:

hope u have a good day

a 9 foot ladder is placed 4 feet from the base of a building.about how high does the ladder reach

Answers

Answer:

8.06 feet

Step-by-step explanation:

use the Pythagorean theorem

9^2 = 4^2 + x^2

81 =16 +x^2

x^2 = 65

x = 8.06 feet

Can anyone help me with this question please
I’ll mark as brainliest.

Answers

Answer:I *THINK* its C, BUT IM NOT 100% SURE

Step-by-step explanation:

Answer:

Try using math

way to help you, I know this is a point less response but try it.

explanation:

Sorry but thats all i know or look it up type it in the search bar

What is the value of x in the figure?

Answers

The value of x is 27

please help I’m so confused and my parents are gonna kill me if I don’t get my homework done...

Answers

Answer:

X=-6

Step-by-step explanation:

the sum of interior angels in a triangle is 180.

52+78=130

180-130=50

to get 56 to 50 x has to be negative

hope this helps :)

Answer:

Ok I'll save ur life, thank me later-

52 + 56+x + 78 = 180(Since all angles in a triangle sum upto 180°)

=130 + 56+x =180

=186+x=180

=x=180-186

x=-6

56 + (-6)

=50

Hope it helps

60 POINTS!!!!

Your mother is 25 years older than you. Your father is 3 years older than your mother. The product of all three ages are 32,130. How old is your father?

Explanation would be appreciated!

Answers

Let r represents our age, m mother's age, f father's age. If mother is 25 years older than us, I+ 25 = m

If father is 3 years older than mother,

m +3 = f

The product of all three ages is 32130:

I-m.f = 32130

Substitute m with r+ 25:

m+3 =f r+ 25 + 3 = f r+ 28 = f

Substitute now f and m:

I- m.f = 32130 x(x+ 25)(x + 28) = 32130 (a2 + 25x)(x + 28) = 32130 3 + 28r2 + 25r + 700r = 32130 3 + 53r2 + 700r = 32130

Subtract 32130 from each side 3 + 53? + 700r – 32130 = 0

On the graph we can see that the only real solution is 17. > x = 17 m = 25 + 17 m = 42 f = m + 3 f = 42 + 3 f =|45

Our age is 17, Mother's age is 42 and father's age is 45.

Father’s age is 45

( sorry I know it’s too long but hope it helps )

My father is 42 years old as obtained from the cubic polynomial's real root.

What is a factor of a polynomial?

We know that if x = a is one of the roots of a given polynomial x - a = 0 is a factor of the given polynomial.

To confirm if x - a = 0 is a factor of a polynomial we replace f(x) with f(a) and if the remainder is zero then it is confirmed that x - a = 0 is a factor.

let my age be x years.

So, My mother is (x + 25) and my father is (x + 28) years.

{x(x + 25)(x + 28) = 32130.

(x² + 25x)(x + 28) = 32130.

x³ + 53x² + 700x = 32130.

x³ + 53x² + 700x - 32130 = 0.

Now solving this has only one real solution x = 17.

So, My father is (17 + 25) = 42 years old.

learn more about cubic polynomials here :

https://brainly.com/question/28081769

#SPJ2

finished the first one don´t understand these.

Answers

Answer:

Let "x" be the number of people who can go to the amusement park.

So we have: 19 + 14x ≤ 180. This inequality basically means that the parking cost plus the cost of the tickets for every person cannot cost more than 180 dollars.

Solving this inequality, we get:

19 + 14x ≤ 180

14x ≤ 161

x ≤ 11.5

Obviously, we know that we can't have "half" a person, so the most people who can come to the amusement park would be 11 people, and the answer would be: x ≤ 11

Hope this helps!

(ONLY TWO CAPITAL LETTERS) Please answer correctly !!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!! URGENT

Answers

Answer:

NI and HN

Step-by-step explanation:

The segments are both marked with a congruency mark.

what solid is represented by the net

Answers

Answer:

what net. there is no net

Step-by-step explanation:

Answer: triangular prism

Step-by-step explanation:

If a = 2 and b = 3, then the value of (a^b + b^a)-1 is :​

Answers

Answer:

[tex]16[/tex]

Step-by-step explanation:

Substituting [tex]a=2[/tex] and [tex]b=3[/tex] into [tex](a^{b}+b^{a})-1[/tex] gives us:

[tex](a^{b}+b^{a})-1[/tex]

[tex]=(2^{3} +3^{2})-1[/tex] (Substitute given values into expression)

[tex]=(8+9)-1[/tex] (Evaluate exponents)

[tex]=17-1[/tex] (Evaluate expression in parentheses)

[tex]=16[/tex] (Simplify)

Hope this helps!

Answer:

16

Step-by-step explanation:

Given

([tex]a^{b}[/tex] + [tex]b^{a}[/tex] ) - 1 ← substitute a = 2, b = 3

= (2³ + 3²) - 1

= (8 + 9) - 1

= 17 - 1

= 16

(a) 50% of 164 (b)75%of 12 (c) 25/2 of 64

help me in these ques

of comparing quantities

Answers

Here goes the answer. Please mark brainliest.

PLEASEEEEEEEE HELPPPPPPPPP I WILL GIVE BRAINLIEST

Answers

These triangles are not similar.  The triangles are not similar because the proportion 8/9 = 2/3 is false.

At the beginning of the month, there were 80 ounces of peanut butter in the pantry. Now, there is 1/3 less than that. How many ounces of peanut butter are in the pantry now?

A.2/3⋅80

B.1/3⋅80

C.80−1/3

D.(1+1/3)⋅80

Answers

Answer:

2/3*80

Step-by-step explanation:

2/3*80, is the same as finding 1/3 of 80, and subtracting the new number from 80.

As an estimation we are told 5 miles is 8 km.
Convert 33.7 miles to km.

Answers

Answer: 53.92km

Explanation: First, do 8/5 to find out how many kilometers is equal to 1 mile. (The answer is 1.6.) Next, do 33.7(1.6) and you will get 53.92. Hope this helped

Answer: 20.9420 is your answer

Which of the expressions below have exactly 2 terms? Select all that apply.
A) 3x+6
B) 7y2–8
C) 14−3y
D) 14x2+8x+16

Answers

..........The answer is D

Mr. Lincoln buys juice and water for the school picnic. A pack of 8 juice boxes ca

$5. A pack of 6 water bottles costs $3. Mr. Lincoln spends $95 for 170 juice boxes

and bottles of water.

a. Choose variables for the two unknown quantities in the problem and tell wha

each variable represents.

b. Use the variables you chose in problem 3a to write an equation for the amour

of money Mr. Lincoln spends.

c. Use the variables you chose in problem 3a to write an equation for the numbe

of drinks Mr. Lincoln buys.

d. Solve the system of equations. How many packs of juice boxes and how many

packs of water does Mr. Lincoln buy? Show your work.

SOLUTION

my

Answers

Answer:

5x + 3y = 95

8x + 6y = 170

x = 10 ; y = 15

Step-by-step explanation:

Let :

x = pack of juice boxes

y = pack of water bottles

Pack of juice box = $5

Pack of water bottles = $3

Amount of money spent :

5x + 3y = $95

Number of drinks purchased :

8x + 6y = 170

Using both equations ;

5x + 3y = 95 - - - (1)

8x + 6y = 170 - - - (2)

Multiply (1) by 6 and (2) by 3

30x + 18y = 570

24x + 18y = 510

Subtract :

6x = 60

x = 60 / 6

x = 10

Put x = 10 in (1)

5(10) + 3y = 95

50 + 3y = 95

3y = 95 - 50

3y = 45

y = 45 / 3

y = 15

x = 10 ; y = 15

The total interest on a 5 year 5.2% loan with a principal of $10,000 is 10,000 × 0.052 × 5 = $2,600.
a. True
b. False

Answers

Answer:

truee

Step-by-step explanation:

i had this answer on my test and if i dont get it right sorry

The total interest on a 5-year 5.2% loan with a principal of $10,000 is $2600. The calculation is true.

What is simple interest?

Simple interest is a quick and easy way to calculate a loan's interest charge. Simply multiplying the daily interest rate by the principal by the number of days between payments yields simple interest.

Given that the amount of $10000 is deposited at the interest rate of 5.2% for the 5 years.

The simple interest is calculated by the formula written below,

SI = ( P x R x T ) / 100

SI = ( 10000 x 5.2 x 5 ) /100

SI = $2600

To know more about simple interests follow

https://brainly.com/question/25793394

#SPJ2

4 / u^2 (when u = 2)

Answers

Answer:

1

Step-by-step explanation:

We have the equation [tex]\frac{4}{u^{2} }[/tex] for u = 2.

Which would be [tex]\frac{4}{2^{2} }=\frac{4}{4}=1[/tex]

Other Questions
Write 70% as a fraction in decimal. Who ever answers right will get the brainlest answer is this correct? 3^10 over 3^7 = 3^3 Which segment(s) correspond(s) to the boiling point of the substance?ABCDE Sodium bicarbonate is the chemical name for baking soda. Its chemical formula is NaHCO3. What does the subscript 3 mean? Need help ASAP please and thank you The number y of calories burned after x minutes of kayaking is represented by the linear function y=4.5x . The graph shows the number of calories burned by hiking.a. Which activity burns more calories per minute?A) kayakingB) hikingQuestion 2b. You perform each activity for 45 minutes. How many total calories do you burn?You burn 472.5 calories.Question 3Justify your answer. Which of the following are factors of: 6x211x+4 Question 11 options: (2x-1) (2x-4) (x+4) (6x+1) (3x-4) (3x-1) This perspective is concerned with understanding the function a behavior such as depression serves in our overall well-being. convert to mixed number help its not hard its just ur opinion (actual assignment) ill give brainless to the best answer what is the first step to solving 9z-21=60 If Lisa had three Apples and Bobgave her to more. How many wouldLisa have all together. All camels are basically similar in structure. They have developed adaptations forcoping with both heat and dehydration.Which of the following does not benefit the camel as a means of preventing dehydration?A. Camels can extract water from their solid wastes. B. Camels ears are lined with fur to keep out sand and other blowing matter. C. Their kidneys are capable of concentrating urine to reduce water loss. D. Camels are able to locate water in any environment. 3(k-2)+7=29-k denklemin kkn bul What do you think the girl speaking to Thomas in his head means at the end of chapter 28 when she says, "It was you and me, Tom. We did this to them. To us"? how might that affect the rest of the book? Explain. I need it please somebody Please help out with this geometry homework I was assigned. And what formula do I use? A disc whose moment of inertia is 1kgm is rotating at 100 rad/sec. This disc is pressed against a similar disc that is able to rotate freely but is initially at rest. The two disc together and rotate as a unit. Determine the final angular velocity of the system. PLEASE HELP ME ASAP Explain how to write:a. The sum of a number and the product of the sameb. The ratio of twice a number and 5 Answers for questions