Mathematics High School

Given a sphere with radius r, the formula 4pi r^2 gives
A. the volume
B. the surface area
C. the radius
D. the cross-sectional area

Given A Sphere With Radius R, The Formula 4pi R^2 GivesA. The VolumeB. The Surface AreaC. The RadiusD.

Answers

Answer 1

Answer:

Step-by-step explanation:

That's B:  the surface area.

The volume of the sphere is V = (4/3)πr³; A = 4πr² happens to be the derivative of V with respect to r.

Related Questions

What is the volume of a sphere with a radius of 25.9 in, rounded to the nearest tenth
of a cubic inch?

Answers

Formula: (4/3)(pi)r^2
(4/3)(pi)r^2
(4/3)(pi)25.6^2
(4/3)(pi)*655.36
=2809.88235727
=2809.9 in^3

8. Sheila and her study partner flipped a coin 120 times. They flipped 70 heads and 50 tails. What is the
experimental probability that the next flip will be heads up?
F 58%
58%
G 50%
H 41%
J 70%

Answers

Answer:

.

Step-by-step explanation:

Answer:

F

Step-by-step explanation:

To find the amount of percent a value takes up, here's the formula:

Let X = heads

Let y = amount of coinflips

Let z = percent of coinflips are heads

z=x/y

can someone please help me with this i will give brainliest

Answers

Answer:

E

Step-by-step explanation:

15*10*20

Follow the volume of a rectangular prism formula which is l*b*h.

It will equal to 3000cm^3

1/2 (2n + 6)
simply the answer and show work

Answers

Answer:

The answer is n + 3.

Step-by-step explanation:

1) Simplify.

[tex] \frac{2n + 6}{2} [/tex]

2) Factor out the common term 2.

[tex] \frac{2( n+ 3)}{2} [/tex]

3) Cancle 2.

[tex]n + 3[/tex]

Therefor, the answer is n + 3.

Mr. Dotson wants to know if the neighbors on his street would be interested in a community watch. He surveys every fourth household and concluded that 70% would be interested

Answers

Answer:

The answer is "This is true since it is a random systematic  sample".

Step-by-step explanation:

In the given scenario, Systemic random sampling involves the random sampling method which often involves the collection of samples onto an interval system in such a numbered group of people based on the premise/base. It also is a selection of samples at a particular preset interval.

Calculate the sampling interval and fix it quickly. (The sample population divided with several selected components needed).Take a random value between 1 to a sample interval. Replicate the sample size to choosing all additional sections.

Identify the vertex, focus , axis of symmetry and directrix(??+1)2 =8(x-3)

Answers

Answer:

70

Step-by-step explanation:

60 POINTS! RIGHT ANSWERS ONLY PLEASE

Which of the following is a binomial experiment?

Rolling a six-sided number cube and recording the number until a 5 comes up

Rolling a six-sided number cube and recording the number until an odd number comes up

Rolling a six-sided number cube 24 times and recording the number that comes up

Rolling a six-sided number cube 24 times and recording if a 5 comes up

Answers

Answer: Rolling a six-sided number cube 24 times and recording if a 5 comes up

Thank you for being so generous with the points!! <3

What two numbers have a product of -30 and a sum of -1?

Answers

Answer:

5 and -6

Step-by-step explanation:

Answer:

5 and -6

Explanation:

[tex]xy = - 30 \\ x + y = - 1[/tex]

and you solve using the substition method

round off 4,449999 to one place​

Answers

Answer:what we should do?

Step-by-step explanation:

Answer:

There is nothing to be rounded off

Step-by-step explanation:

Mrs. Huffman is buying a dog for her daughter, Anna. The dog can be male or female. It can be a Goldendoodle, Collie, or Retriever. The dog can be small, medium, or large. ​ What is the probability that Anna randomly chooses a male Goldendoodle of any size?

Answers

Answer:

1/2

Step-by-step explanation:

there ARE ONLY TWO GENDERS

THE dog can be male or female =

sum genders = 2

probability of been a male = 1/2

Out of the 69 customers at Charlie's boutique, 33 wore a size medium.

What is the probability that a randomly selected customer wore a size medium?

Write your answer as a fraction or whole number.
Pls help

Answers

Answer:

you can download it here

Step-by-step explanation:

find the value of a amd b if: 7+4 root 3 divided by 7-4 root 3=a+b root 3

Answers

Answer:
The value of a=97 and b=-56.

Write the equation for the yellow line. (please help)

Answers

Answer:

5 2 thats them so 5 2 that them

Need help on this for brainliest

Answers

Answer:

Your answer is letter d

Step-by-step explanation:

A restaurant used 231 eggs last week. Of these, 46 were brown in color. The remainder of the eggs were white in color. Which equation can be used to solve for w, the number of white eggs used last week?

Answers

W + 46 = 231
so
W = 185

Answer:

46 + w = 231

hope this helped

A rectangle has an area of 100cm and a perimeter of 104cm. Find the length and width of the rectangle (NEED ASAP)

Answers

Report the person who put in a link. It’s most likely a bad website or a hacker

Find the length of x.

Answers

Answer: 3

Step-by-step explanation:

What is the −∣−14∣= [value1]

Answers

Answer:

-14

Step-by-step explanation:

The absolute value of -14 is + 14.  If prefaced with a " - " sign, |-14| comes out as -14:

-|-14) = -14


Appreciate the help thank you olzzz

Answers

Answer:

a = 87

Step-by-step explanation:

36+57=93

180-93=87

Answer:

87°

Step-by-step explanation:

Since this is a triangle, triangles add up to 180°

Since we know the 2 angles, we are able to find a

180 - 36 - 57 = 87

a = 87°

Help lol easy
You are having a bake sale and selling cupcakes. It cost you $.15 to make each cupcake. If you sold each cupcake for $1.00, what would your profit be on each cupcake?

Answers

Answer:

0.85 DOLLARS

Step-by-step explanation:

In 2018, the attendance at Jefferson School's Fall festival was 240. In 2019, the attendance was 210. What was the percent change in attendance from 2018 to 2019? Round to the nearest whole percent.

Answers

Answer:

                                                                                                                                                                                                                                     

Step-by-step explanation:

prove triangle AOC is congruent to triangle BOD​

Answers

Step-by-step explanation:

We are given two Triangles and we need to prove them congruent . In ∆AOC and ∆BOD , we have

[tex]\to AC = BD ( given ) \\\\\to OD = OA \\\\\to \angle CAO =\angle BDO (Since\ BD || AC ) [/tex]

Therefore by AAS congruent condition we can say that ,

[tex]\implies\red{ \triangle AOC \cong \triangle BOD }[/tex]

Hence Proved!

How much do I have to deposit today in order to have $5000 in 5 years if interest is 8.5% compounded annually?

Answers

Answer:

PV= $3,402.9

Step-by-step explanation:

Giving the following formula:

Future Vale (FV)= $5,000

Number of years (n) 5 years

Interest rate (i)= 8.5% compounded annually

To calculate the initial investment (PV), we need to use the following formula:

PV= FV / (1 + i)^n

PV= 5,000 / (1.085^5)

PV= $3,402.9

find the perimeter of a square whose area is 441 sq km?

Area of perimeter = 441 sq cm
(side)2 =
[tex] \sqrt{441} [/tex]
=21
the perimeter of sq= 4×side
= 4×21
84



​

Answers

Answer:

Area of perimeter = 441 sq cm

(side)2 =

[tex] \sqrt{441} [/tex]

=21

the perimeter of sq= 4×side

= 4×21

84

Penelope is going to the carnival to ride the rides. It costs $20 to get into the carnival and ride tickets are $0.50 each. How many rides did Penelope get to ride if she spends $35 in all.

Answers

$20 is the base cost (y intercept)
$0.50 is the cost per ride (slope)
Plug into an equation
Y = 20 + 0.50x
35 = 20 + 0.50x
15 = 0.5x, x = 30

Solution: 30 rides

Answer:

Penelope get to ride 30 rides if she spends $35 in all

Step-by-step explanation:

r= ride

20 +0.50r =35

sibtract 20 on each side

0.50r = 15

divide esach side by 0.50

r= 30

A spinner is divided equally into 4 colors: red, blue, green,
and yellow. If the spinner spins 60 times, how many times
can you expect it to land on blue?

Answers

Answer:

15 times because if the spinner is divided into 4 equal parts and you spin it a total of 60 times you would divide 60 by 4 to get your answer

Answer:

15 because 15 for each red, blue, green and yellow

Step-by-step explanation:

15 x 4 = 60

Please somebody help me

Answers

I got the answer to the equation and I’m not sure if it’s right but I got 0

which graph shows all the values that satisfy 2/gx +3>45/g

Answers

Answer:

In graphing inequalities, the first thing to do is graph the equation first irregardless of the inequality symbol. In the given problem, the equation to be graphed is f(x) = 2/9x + 3. Since it has a general form of y=mx + b, this is a linear function. Plot the graph by assigning arbitrary points of x, then you get the corresponding f(x) values. Graph the x values against the f(x) values. The blue line the attached picture will be formed.

Next, you solve the equation by finding x. Just don't mind the inequality symbol:

2/9 x + 3 > 4 5/9

2/9x > 4 5/9 - 3

2/9x > 14/9

x > 14/9 ÷ 2/9

x > 7

Hence, the value of x must be greater than 7. To show this in the graph, find the line where x=7. Create a partition using that line, then shade the rest of the portion where x is greater than 7 until infinity.

Step-by-step explanation:

just help if you cannnnnnnnnnnnnnnnnnnnnnnnnn

Answers

Answer:

A) you need more information to determine the domain.

Step-by-step explanation:

You can't find an answer just by looking at it. Think of it like you are just guessing.

A box in the shape of a rectangular prism is approximately 9 inches long,has an equilateral triangle shaped base with side lengths of 3 inches. The height of the triangular shaped base is 2.5 inches. How many cubic inches of styrofoam peanuts can can be place inside the container?

Answers

Answer:

33.75 cubic inches of styrofoam can be placed inside the container.

Step-by-step explanation:

Based on given information, the volume of the prism ([tex]V[/tex]), in cubic inches, is determined by using this formula:

[tex]V = \frac{1}{2}\cdot b\cdot h \cdot l[/tex] (1)

Where:

[tex]b[/tex] - Base of the triangular face, in inches.

[tex]h[/tex] - Height of the triangular face, in inches.

[tex]l[/tex] - Length of the prism, in inches.

If we know that [tex]b = 3\,in[/tex], [tex]h = 2.5\,in[/tex] and [tex]l = 9\,in[/tex], then the volume of the prism is:

[tex]V = \frac{1}{2}\cdot b\cdot h \cdot l[/tex]

[tex]V = 33.75\,in^{3}[/tex]

33.75 cubic inches of styrofoam can be placed inside the container.

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