Does doubling the radius of a sphere double the surface area? Explain your reasoning using an example.

Answers

Answer 1

Answer:

yes

Step-by-step explanation:

because area of sphere equals =

[tex]4\pi \: r{2} [/tex]

so if we doubled the radius the surface area will be doubled


Related Questions

first 10 didgts of pi

Answers

I guess I did not know how to answer sorry

Answer: thefirst ten didgets of pi are .1415926535

Step-by-step explanation:

Solve for j.
3 + 4
2
-3

Answers

Answer:

Hello!

Step-by-step explanation:

How do we solve for j when there is no equation with j in it to solve for j. Hope we can help you with this when we get a equation!

pls answer fast (50 points)

Answers

Answer: c

Step-by-step explanation:

A. 52.50

B. 54.40

C. 51.00

D. 52.00

Identify the domain and range of y = 3x - 7.

Answers

The domain is (-∞ , ∞ )

The range is (-∞ , ∞ )

Is there a triangle whose angles have these measures in degrees?
A) Yes
B) No

Answers

Answer:

No

Step-by-step explanation:

The sum of all internal angles on a triangle must equal 180°

[tex]28 + 64 + 100 = 192[/tex]

One possible solution to a diminishing Social Security payroll is to decrease the Social Security benefit by 13%. How
would such a decrease effect the benefits on a salary of $54,000?
a. Benefit would decrease by $1,404 annually.
b. Benefit would decrease by $7,020 annually.
Ć. Benefit would decrease by $8,640 annually.
d. Benefit would decrease by $15,660 annually.

Answers

Answer:

the answer is B

Answer:

The correct answer is B) Benefit would decrease by $7,020 annually.

Angle a and b are vertical angles. If m angle a = (5x- 4) degree and m angle b = (2x - 1) degree. Find value of x. WILL MARK BRAINLIEST !!!!!!!!!!!!!!!

Answers

Answer:

Since the 2 angles are vertical angles:

5x-4=2x-1

3x=3

x=1

Can somebody help me with these 2? Will mark brainliest!

Answers

Answer:

Number 1 is 0.3

Number 2 is is choice 2

I really need help on this question

Answers

Answer:

B

Step-by-step explanation:

y = [tex]\frac{1}{4}[/tex] is the equation of a horizontal line, parallel to the x- axis.

A line perpendicular to it will be a vertical line parallel to the y- axis with equation

x = c

where c is the value of the x- coordinates the line passes through.

The line passes through (- 6, - 9) with x- coordinate - 6, thus

x = - 6 ← is the equation of the perpendicular line

Andrew is descending 57 feet underwater while scuba diving. If he descends at a rate of 3 feet per second, how many seconds will it take Andrew to descend the full distance?

Answers

Answer: 19 seconds

Step-by-step explanation:

From the question, we are informed that Andrew is descending 57 feet underwater while scuba diving and that he descends at a rate of 3 feet per second.

The number of seconds that it will take Andrew to descend the full distance will be 57 divided by 3. This will be:

= 57/3

= 19 seconds

It'll take Andrew 19 seconds to descend the full distance

Complete the equation of the line through (3,-8)(3,−8)left parenthesis, 3, comma, minus, 8, right parenthesis and (6,-4)(6,−4)left parenthesis, 6, comma, minus, 4, right parenthesis.

Answers

Answer:

[tex]y = \frac{4}{3}x - 12[/tex]

Step-by-step explanation:

Given

[tex](x_1,y_1) = (3,-8)[/tex]

[tex](x_2,y_2) = (6,-4)[/tex]

Required

Determine the equation

First, we need to determine the slope (m):

[tex]m = \frac{y_2 - y_1}{x_2 - x_1}[/tex]

[tex]m = \frac{-4 - (-8)}{6 -3}[/tex]

[tex]m = \frac{-4 +8}{3}[/tex]

[tex]m = \frac{4}{3}[/tex]

Next, we determine the line equation using:

[tex]y - y_1 = m(x - x_1)[/tex]

Where

[tex]m = \frac{4}{3}[/tex]

[tex](x_1,y_1) = (3,-8)[/tex]

[tex]y - (-8) = \frac{4}{3}(x - 3)[/tex]

[tex]y +8 = \frac{4}{3}(x - 3)[/tex]

[tex]y +8 = \frac{4}{3}x - 4[/tex]

[tex]y = \frac{4}{3}x - 4 - 8[/tex]

[tex]y = \frac{4}{3}x - 12[/tex]

The equation of the line that passes through  (3, -8)(6, -4) is y = - 1 / 2 x - 1

The slope intercept equation is as follows:

y = mx + b

where

m = slope

b = y-intercept

Therefore,

The line passes through (3, -8)(6, -4)

m = -4 - 3 / 6 + 8 = -7 / 14 = - 1 / 2

y = - 1 /2 x + b

let's find b using (6, -4)

-4 = - 1 /2 (6) + b

-4 + 3 = b

b = -1

Therefore,

y = - 1 / 2 x - 1

learn more:

Write an equation of the line in slope-intercept form that passes through ( -2, 5) and is parallel to y=4x.

A. Y=-2x+13
B. Y=4x-3
C. Y=-2x-3
D.y=4x+13

Answers

Parallel= same slope
Y = 4x + b
Plug in the point
5 = 4(-2) + b
5 = -8 + b
b = 13
It would be D. Y= 4x+13

Jae is constructing an open box from a piece of cardboard that is 9 in. Wide and 12 in. Long. Jae cuts squares of equal size from each corner of the cardboard, and then folds up the sides of the box. Write and simplify a polynomial function V for the volume of the box in terms of x.

Answers

Answer:

The volume of the open box is [tex]V = 108\cdot x -42\cdot x^{2}+4\cdot x^{3}\,\,\,[in^{3}][/tex].

Step-by-step explanation:

Geometrically speaking, the volume of the open box ([tex]V[/tex]), measured in cubic inches, is described by the volume of a right parellelepiped. That is:

[tex]V = w\cdot l \cdot h[/tex] (1)

Where [tex]w[/tex], [tex]l[/tex] and [tex]h[/tex] are the width, length and height of the open box, respectively, measured in inches. Please notice that width of the open box is the width of the piece of cardboard ([tex]w'[/tex]), measured in inches, minus two times the side of the cut squares ([tex]x[/tex]), measured in inches, length of the open box is the length of the piece of cardboard ([tex]l'[/tex]), measured in inches, minus two times the side of the cut squares and the height of the open box is the side of the cut squares. That is:

[tex]w = w' -2\cdot x[/tex] (2)

[tex]l = l' - 2\cdot x[/tex] (3)

[tex]h = x[/tex] (4)

By applying (2), (3), (4) in (1), we expand and simplify the volume function:

[tex]V = (w'-2\cdot x)\cdot (l'-2\cdot x)\cdot x[/tex] (5)

If we know that [tex]w' = 9\,in[/tex] and [tex]l' = 12\,in[/tex], then the equation above is:

[tex]V = (9-2\cdot x)\cdot (12-2\cdot x)\cdot x\,\,\,[in^{3}][/tex]

[tex]V = (108-24\cdot x-18\cdot x+4\cdot x^{2})\cdot x\,\,\,[in^{3}][/tex]

[tex]V = (108-42\cdot x +4\cdot x^{2})\cdot x \,\,\,[in^{3}][/tex]

[tex]V = 108\cdot x -42\cdot x^{2}+4\cdot x^{3}\,\,\,[in^{3}][/tex]

The volume of the open box is [tex]V = 108\cdot x -42\cdot x^{2}+4\cdot x^{3}\,\,\,[in^{3}][/tex].

What’s the surface area of 200 square inches ?

Answers

Answer:

5.77in

Step-by-step explanation:

A cube has 6 square faces, so each face would have area 200 sq in/6=33.33 sq in

Since the area of each face equals the square of the sides, the edge of the cube would be sqrt%2833.33sq+in%29= approx. 5.77 in

MR. WINTER WAS STANDING ON THE MIDDLE RUNG OF HIS LADDER. HE THEN STEPPED UP 4 RUNGS, THEN DOWN 6 RUNGS. LATER HE CLIMBED BACK UP 7 RUNGS. FINALLY, HE CLIMBED UP 5 MORE RUNGS AND REACHED THE TOP OF THE LADDER. HOW MANY RUNGS WERE THERE ON HIS LADDER?

Answers

why all caps ? ;) ....

24 = -3(2а — 15) — а

Answers

Answer:

a=3

Step-by-step explanation:

24= -3(2a-15)-a -->given

24=-6a+45-a -->distribute the -3

24=-7a+45 -->combine like terms

-21=-7a -->subtract 45 from both sides

3=a -->divide both sides by -7

WILL MARK BRAINLIEST!! if the measure of angle CBD is 9(8x+11)°, then what is the value of x?

Answers

Answer: 72x+99'



Step-by-step explanation:

ALSO LOVE YOUR PROFILE PICTURE!!!!

what is 3 1/2 miles -3,520 yards (answer in miles)

Answers

Answer:

Step-by-step explanation:

-2mi 0.000000yd

I believe the correct answer is 1.5 miles. Because the correct answer In yearns would be 2640z

PLEASE HELP :(
Mario is spending the day at the county fair. The admission ticket costs $10.00. Each ride ticket costs $2.50.

Which equation can be used to find y, the total cost of Mario’s day at the fair, given x represents the number of ride tickets he purchases?

y = 2.50x + 10

y=2.50(x+10)

y = 10x + 2.50

y=2.50x−10

Answers

Answer:

y = 2.50x + 10

Step-by-step explanation:

y=mx+b

x=number of rides

y=cost

Answer:

a is the answer

Step-by-step explanation:

Identify the polynomial by degree and number of terms: 2x3 + 5x

Answers

Answer: x(2x^2+5)

Step-by-step explanation:

this prob didnt help so i atleast tryed

Help me pleaseeeeee!!!!

Answers

Answer:

B

Step-by-step explanation:

It's a guess


[tex] {x}^{ 2} + 4x - 21[/tex]
I'm trying to solve for x but I dont understand and need help ​

Answers

x= 3, -7 ( happy thanksgiving lovely! )

(50 points) Use the spinner below. Show your work, making sure to simplify your answers. (Note: The smallest section of the circle is 1/16 of the circle.)

16. What is P(red, yellow, blue)?

17. What is P(orange, yellow)?

18. P(green, blue, purple)?

19. P(pink)?

20. P(red, orange, yellow, green, blue, purple)?

Thank you!!

Answers

Answer:

I have the same questions and I got them right

Step-by-step explanation:

16. What is P(red, yellow, blue)?

P(red, yellow, blue)=  6/16= 3/8.

4/16+ 1/16+ 1/16= 6/16= 3/8

17. What is P(orange, yellow)?

P(orange, yellow)= 1/8

1/16+1/16= 2/16= 1/8

18. P(green, blue, purple)?

P(green, blue, purple)= 5/8

7/16+1/16+2/16= 10/16= 5/8.

19. P(pink)?

P(pink)=0

There is no pink color.

20. P(red, orange, yellow, green, blue, purple)?

P(red, orange, yellow, green, blue, purple)= 16/16= 1.

4/16+ 1/16+ 1/16+ 7/16+1/16+2/16 =16/16= 1.

Hope it helps!!!

Please help me im new to the site. A soda company had sales of $35,119 million in 2010 and $45,962 million in 2014. Use the Midpoint Formula to estimate the sales in 2012. Assume that the sales followed a linear pattern.

Answers

Answer:40533.5

Step-by-step explanation:

Midpoint formula

(35113, 2010) > (X1, Y1)

(45954, 2014) > (X2, Y2)

Plug it into the midpoint formula

3
Mark placed a ladder against a wall. The bottom of the ladder was 5 feet away from the wall. Find the height of the wall.
Ladder
10 feet
Wall
5 feet

Answers

Answer:8.66?

Step-by-step explanation:

pythagoras theorum finding the shorter side

A=C²-B²

10²-5²

=√10² - 5²

=8.66

I need help ;-; pls

Answers

Answer:

B) 17

Step-by-step explanation:

3 (12 - 8) + 5

(3 x 12) - (3 x 8) + 5

(36 - 24) + 5

12 + 5

17

There are 60 seconds in a minute and 60 minutes in an hour. How many seconds are in one hour? You may use the area model to solve. Show your work (algorithm)

Answers

Answer:

3600 seconds

Step-by-step explanation:

There are 60 seconds in a minute and 60 minutes in an hour. How many seconds are in one hour?

Using area model

60 seconds = 1 minute

60 minutes = 1 hour

The number of second in an hours

= 1 minute = 60 seconds

60 minutes(1 hour) = x

Cross Multiply

= 60 minutes × 60 seconds/1 minute

= 3600 seconds

Hence, 1 hour = 3600 seconds

What is the value of -4° +(6-2)(-6)?
434
-2
34

Answers

Answer: Um, –28?

Step-by-step explanation:

Function g is represented by the graph. For what input value or values is g (x) = 4?

Answers

Answer:

-2 and 2

Step-by-step explanation:

When you look at the graph, you see that the line is in a U shape. We are trying to see what the value of g(x)=4. Since g is represented by the graph, the equation equals 4. The 4 in the equation is positive so you would look at the graph for a positive 4. There are 2 positive 4's on the graph; one on the x axis and one on the y axis. If you look at the U-shaped line, you see that it passes the 4 on the y axis. (the point -2,4 has the 4 as y and the point 2,4 has 4 as y). This makes the answer -2 and 2 because both the numbers have 4 as the y when you put them as points.

Add
to each side x2 - 8x = 9 to complete
the square.

Answers

25.....!!!!!!!&$(;7$;;)

Answer:

the correct answer is 16

Step-by-step explanation:

Add  ⇒ 16 to each side x2 – 8x = 9 to complete the square.

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