Volume and surface area

Volume And Surface Area

Answers

Answer 1

Answer:

The 1st one is 540π

The 2nd one is 1696.46

Step-by-step explanation:

To find the volume of a cylinder, you do the following:

[tex](r)^2\pi \times h[/tex]

Where r represents the radius of the circle and h represents the height. Because it's multiplication, we can change it to:

[tex]r^2\times h \times \pi[/tex]

So since the radius is 6, 6^2 is 36. Then we multiply by 15, to get 540. Then now since we don't need to multiply the pi, you just leave it as 540π.

For the second one, multiply 540 by pi to get the answer, then round it to the nearest hudredth to get 1696.46.


Related Questions

Which expressions are equivalent to √1,120y? Select three options.
√√2-2-2-2-5-7-y-y
√2² √2² √2² √5² √7²√√
√2² √2² √2. √5.17.√7.SY
02.2.y√2-5-7-y
4y√70y

Answers

The expression that is equivalent to √1,120y is: 4√70y.

What are Equivalent Expressions?

Expressions are said to be equivalent when the value of one is the same as the value of the other when evaluated or simplified.

Given the expression, √1,120y, we can simplify as shown below:

√(16 × 70 × y)

= 4√70y

Thus,  4√70y is equivalent to √1,120y .

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Which sentence from the source best supports the reason "recreational sports are valuable because youth need to exercise daily"? 1 2 3 4

Answers

The sentence that best supports the reason for youth recreational sports is (3) The US Department of Agriculture recommends that young people ages 6–17 should engage in 60 minutes of physical activity each day.

What are recreational sports?

Recreational sports are competitive physical games played for fun and physical exercise with friends or as part of extra-curricular activities.

They do not involve professional sports persons.

Question Completion:

Read this source of information. (1) American youth have school commitments and extracurricular activities. (2) Many also enjoy leisure activities, such as reading and playing video games. (3) The US Department of Agriculture recommends that young people ages 6–17 should engage in 60 minutes of physical activity each day. (4) The specific amount of activity needed for a healthy lifestyle depends on daily caloric intake.

Thus, the sentence that best supports the reason for youth recreational sports is Sentence 3.

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Answer:

ez 3

Step-by-step explanation:

What is the value of f(4) in the function below? f(x) = -1/1·2x A. 16 OB. 8 C. 2 OD. 4​

Answers

Answer: 4

Step-by-step explanation:

[tex]f(4)=\frac{1}{4} \cdot 2^{4}=\frac{1}{4} \cdot 16=4[/tex]

I need help with this question I got 1 as an answer but it’s saying it’s wrong
log 4 (x³ +255) = 4

Answers

Answer:

see image

Step-by-step explanation:

I did two different problems depending on whether the 4 beside the log is a base or not.

If the log IS the base, I got x = 1 as you did. But if the 4 is not the base then there is no base written and that means the base is 10.

For log problems that have log on one side of the equation only, then a good strategy is to change the equation from logarithmic form to exponential form. See image for work. Hope this helps.

0.2 was divided into a particular number. this quotient was the multiplied by 7, and 2.8 was taken from that product. if the previous operation resulted in -499.8 find the initial number

Answers

Oh snap idek
Sorry bro

Answer:

(x/0.2)(7)-2.8=-499.8

x=-14.2

Step-by-step explanation:

(x/0.2)(7)-2.8=-499.8

7x/0.2 -2.8 = -499.8

35x -2.8 = -499.8

35x = -499.8 +2.8

35x = -497

35x/35 = -497/35

x = -14.2

you probably already got it solved, but at least this can help anyone else!

Write
2660
1000
as a decimal.

Answers

2.660 I’m not sure if you mean the 1000 is dividing but that should be your answer I guess
Answer: 2.660

Step-by-Step Explanation:

=> 2660/1000 = 2.660

There are 3 Zeroes in 1000. Therefore shift the decimal point 3 places towards the left. Hence it becomes 2.660

Triangle RST was transformed using the rule (x, y) → (–x, –y). The vertices of the triangles are shown.

R (1, 1)
S (3, 1)
T (1, 6) R' (–1, –1)
S' (–3, –1)
T' (–1, –6)

Answers

The transformation was a 180° rotation about the origin.

We can solve this question by plotting the points R (1, 1)

S (3, 1) T (1, 6) and R' (–1, –1) S' (–3, –1) T' (–1, –6) on the graph as shown below.

As we can see from the graph, the original triangle RST which was in quadrant 1, now becomes triangle R’S’T’ in quadrant 3. Thus, when triangle RST was transformed using the rule (x, y) → (–x, –y), from quadrant 1 to quadrant 3 it is a 180° rotation about the origin.

Hence, the transformation was a 180° rotation about the origin.

Your question was incomplete. Please check below for full content.

Triangle RST was transformed using the rule (x, y) → (–x, –y). The vertices of the triangles are shown. R (1, 1) S (3, 1) T (1, 6) R' (–1, –1) S' (–3, –1) T' (–1, –6)

Which best describes the transformation?

The transformation was a 90° rotation about the origin.

The transformation was a 180° rotation about the origin.

The transformation was a 270° rotation about the origin.

The transformation was a 360° rotation about the origin.

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Find a function f such that f '(x) = 5x3 and the line 40x + y = 0 is tangent to the graph of f.

Answers

The function that is a  tangent to the graph of f is [tex]f(x) = (5/4)x^4+60[/tex]

What is the concept of integral?

The definite integral can be interpreted as the resulting area of a region. In addition, it is a value in its result, that is, it does not depend on the variable x, which can be exchanged for any other variable without changing the value of the integral.

Knowing that :

40x + y = 0 is tangent of f(x)slope of the line = -40

therefore, f'(x)|x=a = -40, so only look for a we have:

[tex]5a^3 = -40\\a^3 = -8\\a = -2[/tex]

if, x = -2, then y = 80 (since, 40x + y = 0), therefore, f(x) passes through (-2,80), so in the equation:

[tex]f'(x) = 5x^3\\f(x) = (5/4)x^4 + c\\80 = (5/4)(-2)^4 + c\\c = 60[/tex]

Therefore,

[tex]f(x) = (5/4)x^4+60[/tex]

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Solve this system using the substitution method. -3x + 4y = 1 -4x + 5y = -2

Answers

Answer:

the x value is 13 and the y value is 10. x=13 and y=10

Find the mean of the list of data 43,69, 48,37,85,57,95,102

Answers

The mean is 66.37
———
Answer: 67
I hope this helps you!

(1 point) The matrix
6 4
-7 k
is invertible if and only if k is not equal to

Answers

Answer:

  k ≠ -14/3

Step-by-step explanation:

A square matrix is invertible if and only if its determinant is not zero.

Determinant

The determinant of a 2×2 matrix is the difference of the products of the diagonal terms and the off-diagonal terms:

  det = (6)(k) -(-7)(4) = 6k +28

Restriction on k

The requirement that the determinant is not zero places a restriction on k.

  6k +28 ≠ 0

  k +14/3 ≠ 0 . . . . . . divide by 6

  k ≠ -14/3 . . . . . . . . subtract 14/3

For the matrix to be invertible, the value of k must not be -14/3.

what is the range of f(x)=3^x

Answers

Answer: [tex]f(x) > 0[/tex]

Step-by-step explanation:

The range of all exponential functions without a vertical shift is the set of positive real numbers.

Cindy has decided to lease a car. the lease includes a money factor of 0.00354. what interest rate is cindy being charged in her lease? a. 0.85% b. 8.5% c. 1.475% d. 14.75% please select the best answer from the choices provided a b c d

Answers

The interest rate Cindy will be charged with money factor 0.00354 is approximately 8.5% which is option b.

Given The factor included in lease is 0.00354.

Interest is the amount that a bank or person who gives loan charges from loan taker.

Money factor is a method for finding the financing charges on a lease with monthly payments. The money factor can be translated into the annual percentage rate by multiplying the money factor by 2400.

Money factor=0.00354.

So the interest rate that Cindy will charge is equal to 2400*0.00354

The interest rate Cindy will be charged =8.496%

=8.5%

Hence the interest rate charged is approximately 8.5%.

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A ride-sharing company charges $6 per mile plus a $10 surcharge during peak hours. Suppose Manish’s ride during peak hours costs $22. To determine how many miles he traveled during this ride, solve for x in the following equation: 6x + 10 = 22

Answers

Answer:

2 miles

Step-by-step explanation:

6X + 10 = 22

X = (22-10)/6 = 12/6 = 2 miles


Mila plants 820 hectares of potatoes and corn. To maximise his profit he plants 140 hectares more of potatoes than of corn. How many hectares of each does he plant?

Answers

Answer:

480 Hectares potatoes, 340 Hectares corn

Step-by-step explanation:

Let x be the land used to plant potatoes in hectares.

Let y be the land used to plant corn in hectares.

Given the information from the question, we know that:

x + y = 820 - Equation 1

and

x - y = 140 - Equation 2

as you can see here we have 2 equations, means we can solve them simulteanously to solve for both. We will use elimination method.

We will use Equation 1 - Equation 2.

x-x+y-(-y)=820-140

2y = 680

y = 680 ÷ 2 = 340 hectares

We substiture y into equation 1 to find x

x + 340 = 820

x = 820 - 340

= 480 hectares

Therefore, 480 hectares of potatoes and 340 hectares of corn were planted.

Answer:

p=x+140whilec=x x+140+x=820ans=340 Answer=corn 340. while potatoes 480

Here's my work, is it right?
SA=2πr^2+2πrh
r=3.6cm
h=21.9cm
2π(3.6)^2+2π(3.6)(21.9)
=576.7964cm^2

Answers

Answer:

no

Step-by-step explanation:

there are somethings you need to know. The given height is the combined height of the cylinder and hemisphere. but we need to use the height of cylinder in the formula so we subtract the original height by radius.

Next thing is that the formula 2πrh is for C.S.A of the cylinder but we need the base area as well for surface area of this combined solid. So we add base area (i.e πr²) to 2πrh.

What is the next whole number after 3355 in the base six system

Answers

Answer:

Ordinal, 3,355th. This number as US currency, three thousand three hundred fifty-five dollars ... 3355 is NOT a triangle number ... Base 6

A cyclist rides her bike at a rate of 9 kilometers per hour. What is this rate in kilometers per minute? How many kilometers will the cyclist travel in 15 minutes? Do not round your answers.

Answers

The rate of 9 kilometers per hour in kilometers per minute is 0.15 km/min. The cyclist would travel 2.25 km in 15 minutes.

What is an equation?

An equation is an expression that shows the relationship between two or more numbers and variables.

60 km/h = 1 km/min

Hence:

9 km/h = 9 km/h * (1 km/min) / ( 60 km/h) = 0.15 km/min

In 15 minutes, distance = 0.15 km/min * 15 min = 2.25 km

The rate of 9 kilometers per hour in kilometers per minute is 0.15 km/min. The cyclist would travel 2.25 km in 15 minutes.

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Dwight Donovan, the president of Finch Enterprises, is considering two investment opportunities. Because of limited resources, he will be able to invest in only one of them. Project A is to purchase a machine that will enable factory automation; the machine is expected to have a useful life of five years and no salvage value. Project B supports a training program that will improve the skills of employees operating the current equipment. Initial cash expenditures for Project A are $103,000 and for Project B are $41,000. The annual expected cash inflows are $34,441 for Project A and $12,522 for Project B. Both investments are expected to provide cash flow benefits for the next five years. Finch Enterprises’ desired rate of return is 8 percent. (PV of $1 and PVA of $1) (Use appropriate factor(s) from the tables provided.)

Answers

1. The computation of the net present value of each project is as follows:

                                     Project A           Project B

NPV                               $36,523            $9,000

2. Based on the net present value approach, Project A should be adopted, instead of Project B.

What is the net present value?

The net present value is the difference between the costs and the annual cash inflows discounted to their present values.

Data and Calculations:

                                      Project A           Project B

Initial costs                     $103,000          $41,000

Annual cash inflows         $34,441          $12,522

Project live                       5 years            5 years

Rate of return                    8%                    8%

Annuity factor                   3.993             3.993

PV of cash inflows       $139,523          $50,000

NPV                               $36,523            $9,000

Question Completion:

1. Compute the net present value of each project.

2. Which project should be adopted based on the net present value approach?

Thus, based on the net present value approach, Project A should be adopted.

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Find the first three terms of the sequence, Classify the sequence as arithmetic ( give d value ), geometric ( give r value ), both, or neither..... Sn = 10n

Answers

The first three terms of the sequence are 10, 20, and 30.

How to depict the sequence?

The function given is 10n. In this case, the terms will be:

First term = 10n = 10 × 1 = 10

Second term = 10 × 2 = 40

Third term = 10 × 3 = 30

In this case, the first three terms of the sequence are 10, 20, and 30.

It an arithmetic sequence as there is a common difference of 10.

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The common _____ of two rays that make an angle is called the vertex.
your answer goes here

Answers

Answer: end point



Explanation: vertex is made from the endpoint of two rays

What is the number of Power set of A show step by step? A = {a,b, {a}, 3, {3}}.​

Answers

By "number of Power set of A" I wonder if you mean the cardinality of the power set.

For any finite set with [tex]n[/tex] elements, its power set contains [tex]2^n[/tex] elements.

Here [tex]|A| = 5[/tex], so the power set will contain [tex]|\mathcal P(A)| = 2^5 = \boxed{32}[/tex] elements.

Recall that the power set is the set of all subsets of a given set

• subsets of [tex]A[/tex] of size 0 (1):

[tex]\emptyset[/tex]

• subsets of size 1 (5):

[tex]\{a\}\\ \{b\}\\ \{\{a\}\}\\ \{3\}\\ \{\{3\}\}[/tex]

• subsets of size 2 (10):

[tex]\{a,b\}\\ \{a,\{a\}\}\\ \{a, 3\}\\ \{a, \{3\}\}\\ \{b,\{a\}\}\\ \{b,3\}\\ \{b,\{3\}\}\\ \{\{a\},3\}\\ \{\{a\}, \{3\}\}\\ \{3,\{3\}\}[/tex]

• subsets of size 3 (10):

[tex]\{a,b,\{a\}\}\\ \{a,b,3\}\\ \{a,b,\{3\}\}\\ \{a,\{a\},3\}\\ \{a,\{a\},\{3\}\} \\ \{a,3,\{3\}\}\\ \{b,\{a\},3\}\\ \{b,\{a\},\{3\}\}\\ \{\{a\},3,\{3\}\}[/tex]

• subsets of size 4 (5):

[tex]\{a,b,\{a\},3\}\\ \{a,b\{a\},\{3\}\}\\ \{a,b,3,\{3\}\}\\ \{a,\{a\},3,\{3\}\}\\ \{b,\{a\},3,\{3\}\}[/tex]

• subsets of size 5 (1):

[tex]\{a,b,\{a\},3,\{3\}\}[/tex]

How to get T. I have gotten this question wrong multiple times already. It is not simplified it wants it in the complete decimal form.

Answers

Answer:

t = 4.0

Step-by-step explanation:

1.) P(t) = 1578

2.) Divide both sides by 1400

3.) Take the natural log of both sides (to remove the "e")

4.) Divide both sides by 0.03

5.) Properly round to the 1st decimal place

The blue truck from old time is part to the right truck from hit road a green truck from super suppliers is part to the right of all time the white truck from Joe's hardware is part to the left of hit road how many trucks are between the Joe's hardware truck in a super supplier's truck

Answers

There are 2 trucks are between Joe's hardware truck in a super supplier's truck.

What is the reasoning?

The reasoning is the capacity to make logical judgments based on newly available or previously known information.

The question is incomplete.

The complete question is in the picture, please refer to the attached picture.

We have:

The blue truck from the old time is part to the right truck from hit road the green truck from super suppliers is part to the right of all time.

According to the information provided, there are only two trucks between the Super Suppliers truck and the Joe's Hardware truck.

Joe's Hardware is essentially on the left and Super Suppliers is on the right, with 2 trucks in between.

Thus, there are 2 trucks are between Joe's hardware truck in a super supplier's truck.

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In a biology class, the final grade is based on several things; a lab score, scores on two major tests, ad score on the final exam. There are 100 points availablefor each score. However, the lab score is worth 25% of the total grade, each major test is worth 22.5%, and the final exam is worth 30%. Compute the weighted average for the following scores: 92 on the lab, 81 on the first major test, 93 on the second major test, and 85 on the final exam.

Answers

Answer:
Lab = 23%
Test 1 = 18.225%
Teas 2= 20.925%
Exam = 25.5%
Total = 87.65%
Step-by-step explanation:
Considering you have the percentages laid out all you have to do is multiply each score with the percentage.

Given a normally distributed data set with the mean = 88 and the standard deviation = 6, according to the empirical rule, what percent of the data points are above 76?

Answers

According to the empirical rule, the percent of the data points that are above 76 is; 2.28%

How to use Empirical Rule in Statistics?

We are given;

Mean; μ = 88

Standard deviation; σ = 6

Sample mean; x' = 76

Formula for z-score is;

z = (x' -  μ)/σ

z = (76 - 88)/6

z = -2

Now, from the empirical rule of normal distribution graph attached, we see that at z = -2, the percentage is 95.44%. However, we want to find the percentage that lie above 27. Thus, this is (100% - 95.44%)/2 = 2.28%

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The graph of the exponential function with base, e, has a_______ at _______ Its domain is _______ Its range is _____

Answers

The graph of the exponential function in discuss whose base is; e would have a y-intercept t at point (0, 1), with a domain as the set of all real numbers and its range as the set of all positive numbers.

What is the description of the graph of an exponential functions whose base is e?

It follows from the task content that the function in discuss can be written as;

y = e^x.

Consequently, the y-intercept of the graph which corresponds to x= 0 is; (0, 1).

The domain and range of the graph as with other exponential functions are therefore given as the set of all real numbers and all real positive numbers respectively.

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if there are 24 sushi pieces in 6 packages of sushi how many pieces of sushi are in 2 packages of sushi HURRY!!!!

Answers

Answer: 8 pieces

Step-by-step explanation:

- if there are 24 pieces of sushi in 6 packages then 24/6 = 4 so there’s 4 pieces of sushi in each package

- since there’s 4 pieces of sushi in each pack just do 4 x 2 = 8

- so there’s 8 pieces of sushi in 2 packages

hope this helps :)

Answer:8

Explanation:24 divided by 3 since 3 times 2 makes 6

1 pts
The Dingles have some friends drop in. They wish to serve sherry but do nor have enough to serve
all the same kind. So they mix some which is 20% alcohol with some which is 14% alcohol and have
5 quarts which is 16% alcohol. How much of each kind of sherry did they have to mix?

Answers

Can you answer my question now now now now

enter your answer in scientific notation

Answers

It takes 1.7 x 10 ^4 for light from the sun to reach the comet.

How do scientific notations work?

The number is written in the form  [tex]a \times 10^b[/tex] where we have [tex]1 \leq a < 10[/tex]

Scientific notations have some of the profits as:

Better readability due to compact representation

Its value in terms of the power of 10 is known, which helps in the easy comparison of quantities differing by a large value.

A comet is about  [tex]5.1 \times 10 ^9[/tex] km from the sun.

Light travels at about [tex]3.0 \times 10 ^5[/tex] km per second.

[tex]\dfrac{5.1 \times 10 ^9}{3.0 \times 10 ^5}[/tex]

= [tex]1.7 \times 10 ^4[/tex]

Hence, It takes 1.7 x 10 ^4 for light from the sun to reach the comet.

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