Answers
Answer:
3 cm
Step-by-step explanation:
[tex]V_{cylinder} = 189\pi \: cm^3[/tex] (Given)[tex]h_{cylinder} = 21\: cm[/tex] (Given)Formula for [tex]V_{cylinder}[/tex] is given as:[tex]V_{cylinder} = \pi r^2h[/tex][tex]\implies 189\pi = \pi r^2(21)[/tex][tex]\implies \frac{ 189\pi}{21\pi} = r^2[/tex][tex]\implies 9 = r^2[/tex][tex]\implies \pm\sqrt 9 = r[/tex][tex]\implies \pm 3 = r[/tex]Length of radius can not negative[tex]\implies r = 3 \: cm[/tex]Hope it helps you in your learning process.
Related Questions
1. The prism-shaped roof has equilateral triangular bases. Create an equation that models the height of one of the roof's triangular bases in terms of its sides. In your final answer, include all necessary calculations.
2. The prism-shaped roof has equilateral triangular bases. Use the model you created in question #1 to calculate the height of the roof, to the nearest tenth of a foot, if the side lengths each measure 25 feet. In your final answer, include all necessary calculations.
3. To determine the amount of roofing materials needed, the area of the roof's entire surface is calculated, including the ceiling of the garage. Considering the sketch of the roofing design, create a formula to model the area of the roof's entire surface. In your final answer, include all of your calculations.
4. The contractor in charge of the roofing project is trying to make the job the most cost effective for the homeowners. In order to cut back on the cost of supplies, he decides that a ceiling in the garage is not necessary. In other words, there will not be a barrier built between the garage and the roof. In two or more complete sentences, explain how these changes affect the model for the area of the roof's entire surface.
5. The contractor in charge of the roofing project is trying to make the job the most cost effective for the homeowners. In order to cut back on the cost of supplies, he decides that a ceiling in the garage is not necessary. In other words, there will not be a barrier built between the garage and the roof. Create a formula modeling the area of the roof’s surfaces that the contractor will be purchasing supplies for.
6. Use the formula you created in the previous question to calculate the area of the roof that the contractor will be purchasing supplies for, assuming that the side length of the triangular bases is 25 feet and the length of each rectangular face is twice its width.
Answers
Answer:The answer is given below.
Step-by-step explanation:
As shown in the attached figure, the prism-shaped roof has equilateral triangular bases, one of which is ΔABC. We need to create an equation that models the height of one of the roof's triangular bases in terms of its sides. Let ii be AD.SEe the figure attached herewith, ΔABC forms an equilateral triangle, in which AD is the height. So, D will be the mid-point of BC and ∠ADB = ∠ADC = 90°.Now, in ΔADB, we haveThus, with the help of this model, we can find the height of any one of the roof's triangular bases.. As shown in the attached figure, the prism-shaped roof has equilateral triangular bases, one of which is ΔABC. We need to create an equation that models the height of one of the roof's triangular bases in terms of its sides. Let ii be AD.SEe the figure attached herewith, ΔABC forms an equilateral triangle, in which AD is the height. So, D will be the mid-point of BC and ∠ADB = ∠ADC = 90°.Now, in ΔADB, we haveThus, with the help of this model, we can find the height of any one of the roof's triangular bases.
factor 1/7 out of 1/7x-2/7
1/7x-2/7=1/7(BLANK)
Answers
Answer:
Step-by-step explanation:
!; I just need to find the decimal,, can anyone help me?
Answers
Answer:
1.00 pr
Step-by-step explanatio
Answer:
1.00
Step-by-step explanation:
Using the spinner below – if spun twice in a row – theoretically how many outcomes would involve at least one purple (2)?
a circle with three sections, labelled 1, 2, 3
Answers
Answer:
3
Step-by-step explanation:
Draw a 3 part Venn diagram as shown in the picture and then add up all the ones in the purple circle as that symbolises how many times a spinner can land there:
1+1+1
= 3
The answer is 5
can someone help me and please show your work :)
Answers
Step-by-step explanation:
hope u understood Mark me brainliest
Evaluate. Write your answer as a fraction or mixed number in simplest form.
Answers
Answer:
2[tex]\frac{17}{20}[/tex]
Step-by-step explanation:
Please help!!! I’ll give extra points!!!
Answers
Answer:
probably 2.65
Step-by-step explanation:
can't explain cause out of time, sorry!
Please help me with this question.
Answers
Answer:
n-6
Step-by-step explanation:
Don’t Answer is you don’t know!
Answers
Answer:
Rectangular Prism - 2lw + 2lh + 2wh
Triangular prism - 2B + Ph
Pyramid - 2ll +l^2
Cylinder - 2π πrh + 2π πr^2
Cone - πrl + πr^2
Step-by-step explanation:
a base ball team has 3 outfielders, 4 infielders, and a battery. write each ratio.
A) outfielders to infielders
B) infielders to the battery
C) the battery to the entire team
Answers
Answer :
a - 3:4
b - 4:2, or 2:1
c - 2:9
Another question that i need help with !
It would be appreciated if someone were to answer this question for me !
Thanks
Answers
Answer:72
Step-by-step explanation:
I counted one side and I got 12 so then I just took the answer choices and I divided All of them by 12 (brainly patrol please don’t delete)
Represent the following sentence as an algebraic expression, where "a number" is the letter x.
7 plus a number.
Answers
As Wikipedia says, "In mathematics, an algebraic expression is an expression built up from integer constants, variables, and the algebraic operations (addition, subtraction, multiplication, division and exponentiation by an exponent that is a rational number). For example, 3x^2 − 2xy + c is an algebraic expression."
7 + x is the algebraic expression you'd want.
ILL GIVE THE BRAINLYIST I NEED HELP ASAP
Match the following. Match the items in the left column to the items in the right column.
1. a value generated by a function when an input value is substituted into the function and evaluated
discrete data
2. a set of data in which the values are distinct and separate
output
3. the variable representing the second element of the ordered pairs in a function; the outputs
input
4. a relation in which for any given input value, there is only one output value
independent variable
5. a value that is substituted in for the variable in a function in order to generate an output value
function
6. a set of data in which values can take on any value within a given interval
dependent variable
7. the number before a variable in an algebraic expression
continuous data
8. the variable representing the first element of the ordered pairs in a function; the inputs
coefficient
Answers
Answer:
where is the second column
Step-by-step explanation:
PLS HELP ME
Which measurement of center best represents the set of data? calculate the measurement of center. goals scored during hockey season: 7, 6, 9, 3, 12, 7, 2, 10, 7, 8
in order: 2, 3, 6,7, 7, 7, 8, 9, 10, 12
Answers
Choose the correct formula for combination.
A . n!/r!(n-r)!
B. n!/(n-r)!
Answers
Answer:
A. [tex]\frac{n!}{(n-r!)r!}[/tex]
Step-by-step explanation:
The formula for combinations is: [tex]\frac{n!}{(n-r!)r!}[/tex].
The formula for permutations is: [tex]\frac{n!}{(n-r!)}[/tex]
So, the correct answer is A.
a triangle has two side lengths of 8.5 centimeters and 9.5 centimeters. What is a possible length for the third side? Explain why this is a possible length
Answers
Answer:
12.7 centimeters
Step-by-step explanation:
Using Pythagorean Theorem,
[tex]a^{2} +b^{2} =c^{2}[/tex]
8.5² + 9.5² = √162.5
√162.5 ≈ 12.7²
The possible side lengths for the third side of the given triangle is x ≤ 18.
What is Triangle?A triangle is a two dimensional figure which consist of three vertices, three edges and three angles.
Sum of the interior angles of a triangle is 180 degrees.
Given that,
a triangle has two side lengths of 8.5 centimeters and 9.5 centimeters.
We have to find the possible side lengths for the third side.
We know that,
"Triangle Inequality theorem" states that for a triangle, the sum of any two sides will be always greater than or equal to the third side.
Here, sum of first two sides ≥ length of third side
Let x be the third side.
8.5 + 9.5 ≥ x
18 ≥ x
Hence the possible side lengths are x ≤ 18.
Learn more about Triangles here :
https://brainly.com/question/1163433
#SPJ2
PLEAS HELP ME OUT !!!!!!
Answers
Answer:
20
Step-by-step explanation:
the number line is patterned in twos, so the dot will be at 20, since its 4 spaces away from 12
Answer:
20
Step-by-step explanation:
If you look between the 8 and the twelve you see they went up by 4. Then you see they go up 2 each line. 8, 10, 12,14,16,18, therefore having the answer being 20.
Explain how a social justice movement during the 1960s sought to change society and promote the common good
Answers
pls help me with this question!!!
there are 4 ques.
thank you!!!
Answers
2. Transportation
3. 700
4. Yes
Hope this helped brainliest is appreciated
13 transportation
14 200+500=700
15 yes, highest to lowest
Identify the terms and like terms in the expression 14-8^2-6-10x
Answers
Answer:
Step-by-step explanation:
Question is in image, please help!
(Brainliest if correct)
Answers
Emma worked for 7 hours and earned $38.50. How much did she earn per hour?
Please answer quickly
Answers
Answer:
$5.5
Step-by-step explanation:
38.50 divided by 7 = x
x = 5.5
Answer:
$5.50
Step-by-step explanation:
38.50 ÷ 7 = $ 5.50
so just divide them
A stack of 14 cookies is 23.1 centimeters high. How think is each cookie?
I already got that answer which was 1.65 but the question I don’t understand is
Use your answer in Part A to find how thick a stack of 10 cookies would be?
A. 371
B. 16.5
C. 10.5
D. 20.5
Answers
Answer:
16.5
Step-by-step explanation:
find the height of one cookie. 23.1/14=1.65
then to find the height of any n cookies multiply by n. For example if you want to find the height of 10 cookies do 1.65 x 10.
this is equal to 16.5
The height of one cookie
23.1/14=1.65
Kylie bought a $1,600 tablet using a credit card. If Kylie has to pay an additional $8 each month for interest, and it takes 4 months to pay off, how much will Kylie spend total for the $1,600?
coins
You can earn 3 coins
Answers
Explanation: The tablet originally cost 1600 dollars. Then she has to pay $8 for 4 months because of interest. That would be $8 times 4 months which equals $32. Then just add the two and you have your answer.
How many 5 number zip codes can be created if the first number cannot be one, three, or five, and each of the numbers must be different? (Hint: It may be helpful to list out the digits first.)
Answers
Answer:
There are 7340032 zipcodes that can be created without one, three, or five, as the first number.
Step-by-step explanation:
First you need to find the numbers in the first slot. The numbers could be 2,4,6,7,8,9, or 0. That is 7 numbers that could possibly be the first number. that probabilty is 1/7, so 7 options.
Now there are 4 slots left. and 10 numbers to choose from (including the number 0)
You could multiplty 4 times 4 10 times which equals 1048576.
now you multiply that by 7. 1048576 times 7 equals
There are 7340032 zipcodes that are possible.
If i get it wrong I am sorry. I'm tired.
Answer: seven
Step-by-step explanation: pretty sure
CORRECT ANSWERS ONLY
Answers
Answer:
c
Step-by-step explanation:
-4(3d - 2) - 7
-12d + 8 - 7
-12d + 1
leaving none of the above equivalent
-4(3d-2)-7
-12d+8-7
-12d+1
please answer asap thanks
Answers
Answer:
27 in^2
Step-by-step explanation:
3 x 3 = 9
2 x 9 = 18
18 + 9 = 27
3*3= 9
18+9=27
I need help! (20 POINTS)
Answers
(3,3) (3,6) (8,6) (8,3)
Pls help no links giving brainliest
Answers
Answer:
It is C, x-axis
Step-by-step explanation: if the point is at 0 on the y-axis but on a number greater than or less than 0 on the x-axis then the point is on the x-axis line.
Answer:
Since the y-coordinate is zero, that means that our point lies on the x-axis because any point on the x-axis has a v-coordinate of 0. Therefore our best option would be option E (x-axis).
HELP ITS FOR MY EXTRA CREDIT!
Answers
Answer:
10.5 Km^2
Step-by-step explanation:
3.5 x 3 = 10.5
Answer:
10.5
Step-by-step explanation:
Times 3 by 3
Then times 0.5 x 3
Add 9 and 1.5
That is 10.5
