Answers
Answer:
a) 3 cm
b) 140 cm²
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightEquality Properties
Geometry
Circumference: C = 2πrSurface Area of a Cylinder: SA = 4πr²Step-by-step explanation:
Step 1: Define
C = 21 cm
Step 2: Find Radius r
Substitute [C]: 21 = 2πrIsolate r: 21/(2π) = rRewrite: r = 21/(2π)Evaluate: r = 3.34225 cmRound: r ≈ 3 cmStep 3: Find Surface Area
Substitute [SAS]: SA = 4π(3.34225 cm)²Exponents: SA = 4π(11.1707 cm²)Multiply: SA = 44.6826π cm²Multiply: SA = 140.375 cm²Round: SA ≈ 140 cm²Related Questions
Help me, please A movie theater decreased the size of its popcorn bags by 10%. If the new popcorn bags hold 18 ounces, how much did the old bags hold?
and Tyler's mom purchased a savings bond for Tyler. The value of the savings bond increases by 10% each year.
One year after it was purchased, the value of the savings bond was $220.
AND can you please please please please show me how you found the answer IM BEGGING YOU.
Answers
the numerical value of 10% is 0.1, just as 50% is 0.5. if you multiple 20 by 0.1 you get 2, and subtract 2 from 20 you get 18.
The answer is 20 ounces.
Savings Account question:
if you multiply 0.1 by 220 you will get 10% of 220, then just add that answer to 220. so 0.1 x 220 is 22, 22+220 is 242.
The answer is $242.00
I hope this helps :)
Please help memmmmmmm
Answers
Answer:
It’s actually choice 4) -0.04
Step-by-step explanation:
You can see that as the years increase (when getting older), the size of the pupil decreases. So with that information, you can already eliminate choice 1 and 2 because they both show the rate of change increasing (which is wrong) and choice 3 and 4 shows the rate of change decreasing (which is right). To solve and find the right number, you can take any two numbers, subtract them, and divide them by 10. They reason why you do this because to want to find the difference in 10 years, and you divide it by 10 because the question wants us to find it per year (1 year).
Steps:
You can take 4.3 and 4.7, subtract to get -0.4, and divide it by 10 to get -0.04
You can also take 3.1 and 3.5, subtract to get -0.4, and divide it by 10 to get -0.04
Answer: -0.04
Hope this helps! :)
True or false: The quotient of 180/9x10^5 = 2x10^6
Answers
Answer:
4. 481.6
5. False
Step-by-step explanation:
Hope this helps!
Can someone please help me?
Answers
Answer:
3y^4/5x^6
Step-by-step explanation:
What is the volume of a cone with a diameter 10cm at the base and a height of 20 cm? Use 3.14
Answers
Answer:
522.81 cm^3
Step-by-step explanation:
So the volume of cones is found through the equation V=(pi)r^2(h/3)
So, we take the height, 20 cm, and divide by 3, giving us 6.66~. Then we take the radius, 5cm, half of the diameter, and square it, for 25. Then, we multiply them all together. (3.14)x(25)x(6.66~) for about 522.81 cm^3.
[Also, note that I only went out to two decimal places in all of this. You may want to just use the fraction of 20/3 rather than 6.66~]
[This would be 523.3333~]
What is 497.5609756097561 rounded to the nearest tenth of a percent
Answers
Answer:
497.6
Step-by-step explanation:
Solve for . Enter the solutions from least to greatest. x^2 - 4x + 3 = 0
Answers
Answer:
x=1 or x=3
Step-by-step explanation:
x2−4x+3=0 (x−1)(x−3)=0 x−1=0 or x−3=0 x=1 or x=3
(a3 - 2a + 5) - (4a3 - 5a2 + a - 2)
Answers
Answer:
5 * a^3 - 5 * a^2.
Step-by-step explanation:
is it wrong??
Whoever answers the question first and right will get brainly
Answers
Answer:
the graph is 1/2, y intercept is -6, last one in -7
Step-by-step explanation:
Which of the following is a direct proportion?
A. y=7x
B. y=x+7
C. y=7x−7
D. y=7
Answers
PLEASE HELP ASAP!!!!!!
Answers
Answer:
asap
Step-by-step explanation:
Answer:
2x^2- quadratic - monomial
-2 - linear - constant
3x-9 - linear - binomial
-3x^2 -6x +9 - quadratic - trinomial
Step-by-step explanation:
POINTS Please HurryHassan helps his dad with newspaper deliveries. He gets $5 every morning and 10 cents for every paper delivered. Hassan earned $20.60 one morning. He wondered how many papers he delivered.
A) Define the unknown in the scenario and assign it a letter or symbol.
B) Write an equation to represent the amount of money Hassan earned.
Answers
Answer:
(20.60-5)/0.10=156 Papers
Step-by-step explanation:
Answer:
156
Step-by-step explanation:20.60- 5= 15.60
15.60 divide by .10 (cents) is 156 papers delivered
Hope this helped:)
1. All of the following were disadvantages to the Industrial Revolution EXCEPT:
A: Overcrowding in the cities
B: Agricultural Advances
C: Child Labor
D: Pollution
Answers
Answer:
B.) Agricultural advances
Step-by-step explanation:
What is the area of rectangle FGHI
Answers
Answer:
A=wl
Step-by-step explanation:
HELP PLS ILL GIVE BRAINLIEST ANSWER HELP ASAP!!
what are the lengths of PQ and QR? imput the lengths
Answers
Hope this helped:)
Can somebody plz help answer all the questions correctly thanks!!
WILL MARK BRAINLIEST WHOEVERR ANSWERS FIRST :DD
Answers
Answer:
16.32.5
17.1.32
18.3.25
19.540
20.5.49
21.4.75
Step-by-step explanation:
Answer:
16=$32.5
17=$1.32
18=$3.25
19=$540
20=$5.49
21=$4.75
Step-by-step explanation:trust me bro
I NEED HELP ASAP!!!!!! Pls show the work!!!!!
Answers
PLs need help A doctor’s office records data and concludes that, on average 15 patients out of 100 call to reschedule their appointments per week. Make a prediction of how many appointments out of the next 240 will have to be rescheduled.
Answers
Answer:
36 people
Step-by-step explanation:
During a basketball game, you made 13 shots of either 2 or 3 points. You scored a
total of 30 points. How many shots of each point value did you make?
Answers
Answer:
10 points, sorry if wrong
Step-by-step explanation:
geometry help
In triangle ABC, what is the angle opposite AB
Answers
Answer:
<C
Step-by-step explanation:
We can draw a diagram and we see that <C or vertice C is opposite to side AB. Therefore, <C is the angle that is opposite to side AB.
A circle inscribed in a square is shown below .
A) what is the side length of the square? Show or explain how you got your answer
B) what is the diameter of the circle?
C) what is the circumstance of the circle, in centimeters, of the circle inscribed in the square?
D) what is the radius of the circle ?
E) what is the area of the circle , in square centimeters, of the circle inscribed in the square?
Answers
-6÷1 1/3 as a word problem
Answers
Evaluate -x - y when x = -12 and y = 2
Answers
Answer:
-14
Step-by-step explanation:
subtract
Answer:
-14
Step-by-step explanation:
I used a calculator and it said -14.
Which expression has the same value as -9x-(-4y)
Answers
Step-by-step explanation:
Where are the options
Well... - 9x+4y
Which is heavier: a ton of bricks or a ton of feathers (My points I still have 1600 points to gooo)
Answers
Answer:
they are the same
Step-by-step explanation:
as you said, they both weigh a ton, there would just be more feathers and less bricks
Please solve!! solve for y 3x-y=16
Will name the Brainliest!!
Answers
Answer:
y= 5.333
Step-by-step explanation:
Answer:
y = 3x - 16
Step-by-step explanation:
3x - y = 16
=> 3x - 16 = y
=> y = 3x - 16
What expression in terms of n can be used to represent AD in rhombus ABCD?
A. (2n+5)² + (4n-3)²
B. 2(2n+5) + 2(4n-3)
C. √(2n+5)+(4n-3)
D. √(2n+5)²+(4n-3)²
Answers
Answer:
Step-by-step explanation:
B
The diagonals of the rhombus bisect each other at right angle. The expression in terms of [tex]n[/tex] can be used to represent AD in rhombus ABCD is,
[tex]AD=\dfrac{1}{2} \sqrt{(2n+5) ^2+(4n-3) ]^2\\}[/tex]
What is property of diagonals of rhombus?The diagonals of the rhombus bisect each other at right angle.
Given information-
The length of the one diagonal of the rhombus is,
[tex]AC=(2n+5)[/tex]
The length of the another diagonal of the rhombus is,
[tex]BD=(4n-3)[/tex]
Let the center point of the rhombus is O as shown in the figure.
In [tex]\Delta AOD[/tex] the [tex]\angle AOD[/tex] is the right angle triangle. Thus by the Pythagoras theorem,
[tex]AD^2=AO^2+DO^2[/tex]
Suppose the above equation as equation number 1.
As the diagonals of the rhombus bisect each other thus,
[tex]AO=\dfrac{1}{2} AC\\DO=\dfrac{1}{2} BD[/tex]
Put the values in equation 1,
[tex]AD^2=(\dfrac{1}{2}AC) ^2+(\dfrac{1}{2}BD) ^2[/tex]
Put the values,
[tex]AD^2=[\dfrac{1}{2}(2n+5)] ^2+[\dfrac{1}{2}(4n-3) ]^2\\AD^2=\dfrac{1}{4}[(2n+5) ^2+(4n-3) ]^2\\AD=\sqrt{\dfrac{1}{4}[(2n+5) ^2+(4n-3) ]^2}\\AD=\dfrac{1}{2} \sqrt{(2n+5) ^2+(4n-3) ]^2\\}[/tex]
Hence the expression in terms of [tex]n[/tex] can be used to represent AD in rhombus ABCD is,
[tex]AD=\dfrac{1}{2} \sqrt{(2n+5) ^2+(4n-3) ]^2\\}[/tex]
Learn more about the properties of the rhombus here;
https://brainly.com/question/903499
PLEASE HEWP EASY SCIENCE BRIANLIST U CAN BE IF CORRECT
an athlete running at 8 m\s has a momentum of 520kgm\s. what is her mass?
Answers
Answer:
65kg
Step-by-step explanation:
Solve the following quadratic equation:
y=5x2+10x
Solutions: x= and x=
Answers
Answer:
0 and -2
Step-by-step explanation:
[tex]5x^2+10x=0\\5x(x+2)=0\\\\Then\\5x=0\\\\x=\frac{0}{5}==>x_{1}=0 \\x+2=0==> x_{2}=-2[/tex]
Hello' this is my last question can someone please help me
(please don't just put a random answer just to take my points)
Answers
Answer:
x²-3x=-10
Step-by-step explanation:
x²-3x+0=10
x²-3x=-10
