Assume a cube has side lengths of 2 inches. What is the area of the base of that cube? Does it matter which face we call the base? What is the volume of that cube? Instead, assume the cube has side lengths of 3 inches. What is the area of the base now? The volume? Based on that, what do you think the relationship is between side length, area, and volume? Would that still be true even if it is not a cube? (Put another way, if the side length is x, what is the area and volume?)

Answers

Answer 1

Answer:

Step-by-step explanation:

Volume of a cube:

V = a3

Surface area of a cube:

the area of each face (a x a) times 6 faces

S = 6a2

Face diagonal of a cube:

By the pythagorean theorem we know that

f2 = a2 + a2

Then f2 = 2a2

solving for f we get

f = a√2

Diagonal of the solid cube:

Again, by the pythagorean theorem we know that

d2 = a2 + f2

substituting f into this equation we get

d2 = a2 + (a√2)2 = a2 + 2a2 = 3a2

solving for d we get

d = a√3


Related Questions

The sum of two numbers is 56, and their difference is 10. What are the numbers?

A. 33 and 23

B. 30 and 26

C. 20 and 26

D. 20 and 30​

Answers

The answer is A 33+23 is 56

Answer:

A

Step-by-step explanation: If you add 33 and 23 it'll give you 56.If you subtract them you will get 10.

Therefore, you're answer is A.

lindsay sounds a spinner once and then flips a fair coin twice, the spinner is shown below. what is the probability of the spinner landing on an odd number and the coin landing on tails both times

Answers

Answer: The probability is that it has a 50/50 chance of landing on either side

Step-by-step explanation:

There are 40 children and 12 adults going on a trip to New York City by car. Each car can hold a maximum of 5 people. What is the least number of cars needed for the trip?

Answers

Answer:

Number of cars needed for the trip = 11

Step-by-step explanation:

Given that:

Number of children = 40

Number of adults = 12

Total number = 40 + 12 = 52 people

Each car can hold 5 people.

Number of cars = [tex]\frac{52}{5}[/tex]

Number of cars = 10.4

Rounding off to next whole number as one car can hold a maximum of 5 people.

Number of cars = 11

Hence,

Number of cars needed for the trip = 11

11/(x+9)=5
I am struggling with this question. Is there a solution?

Answers

Answer:

x=-6.8

[tex] \\ step \: by \: step \: explanation \\ \frac{11}{(x + 9)} = 5 \\ 11 = 5(x + 9) \\ 11 = 5x + 45 \\ 5x = 11 - 45 \\ 5x = - 34 \\ x = \frac{ - 34}{5} = - 6.8[/tex]

A bag contains 8 blue marbles, 6 red marbles, and 5 green marbles. The marbles are drawn one at a time.

Find the probability, the third marble is red, given that the first two are green and blue and not replaced

Answers

Answer:

6.3% chance

Step-by-step explanation:

Fill in the blanks:
A perfect square is a ________ whose ________ value is an ________. If you ________ any integer you will always get a ________ number.

Answers

Answer:

A perfect square is a number whose product value is an integer. If you change any integer you will always get a even number.

Step-by-step explanation:

true or false determine key stage statement is true or false 1.a trapezoid has at least one pair of parallel sides
2.the legs of any trapezoid are congruent

Answers

1. True
2. False
This is the answer

Perry had $23 to spend on 4 raffle tickets. After buying them he had 15 dollars left. How much did each ticket cost

Answers

Answer: 5.75

Step-by-step explanation:

Answer:

5.75

Step-by-step explanation:

you divide 23 by 4 and it will give you your answer . the first answer is also correct

It snowed 134.46 inches on Monday and 8.3 inches on Tuesday. How much did it snow on Monday and Tuesday combined?

Answers

Answer:

142.76 inches

Step-by-step explanation:

This is a combination problem, so add the two quantities to find the sum.

134.46 inches + 8.3 inches = 142.76 inches

What is the solution to the equation? sqrtx + 3 = 12 HINT: It's not C.

A. 225
B. 81
C. 3
D. No solution

Answers

B.) 81
sq rt of x= 12-3
sq rt of x=9
take the ^2 of both sides to get rid of the sq root
x^2= (9)^2
=81

Given the equation: - 4 √x - 3 = 12

solve for x;

Divide both sides by -4 in [1];  we get;

√x - 3 = -3

Squaring both sides we get;

x -3 = (3)²

or

x - 3 = 9

Add 3 both sides we get;

x - 3 + 3 = 9 + 3

Simplify:

x= 12

Extraneous solution states that it is a root of a transformed equation that is not a root of the original equation because it was excluded from the domain of the original equation.

Substitute  x= 12 in [1]

- 4√12 - 3 = 12

- 4√9 = 12

-4. 3 = 12

-12 = 12 False.

Therefore, the value of x is 12 and it is an extraneous solution.

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The value of A is? The value of B is?​

Answers

Answer:

C+B

Step-by-step explanation:

you add A + B = C

Answer:

A=10

B=35

Step-by-step explanation:

A farmer notes that in a field full of horses and geese there are 36 heads and 106 feet. How many of each animal are there?

Answers

Answer:

17 horses and 19 geese

Step-by-step explanation:

Let x be the number of horses and y be the number of geese

We know that, horses have four feet and geese have 2 feet

It is given that

x+y=36 (i)

and

4x+2y=106 (ii)

Solve the two equations simultaneously by substitution,

From equation (i)

y=36-x (iii)

Substitute y with 36-x in equation (ii)

4x+2(36-x)=106

4x+72-2x=106

4x-2x=106-72

2x=34

x=17

Then

Substitute x=17 to equation (iii)

y=36-17=19

x=17, y=19

We therefore have 17 horses and 19 geese

question 4/3 y=1 what is y?​

Answers

Answer:

y=  3/4

Step-by-step explanation:

Answer:

y=3/4

Step-by-step explanation:

4/3y=1

divide both sides by 4/3

1 divided by 4/3 is 3/4 so:

y=3/4

Suppose you have $245. If you decide to spend it all on ice cream, you can buy 70 pints. If the price of a glass of lemonade is 2.7 times less than the price of ice cream, how much lemonade can you buy if you decide to spend all your money on it

Answers

Answer:

198

Step-by-step explanation:

From the equation, the number of lemonade will be 306.

How to solve the equation.

Since when the person has $245 and decide to spend it all on ice cream, the person can buy 70 pints, the cost of one will be:

= $245/70

= $3.5

The price of a glass of lemonade is 2.7 times less, the price will be:

= $3.5 - $2.7

= $0.8

Therefore, the number of lemonade that can be bought will be:

= 245/0.8

= 306

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Convert to an improper fraction.

2 1/5

Answers

Answer:

11/5

Step-by-step explanation:

2 x 5 = 10

10 + 1 = 11

11/5

if f(x) = x^2 and g(x) = 2x + 1, WHICH EXPRESSION IS EQUIVALENT TO (F O G)(X),

Answers

Answer:

(2x+1)^2 or 4x^2+4x+1

Step-by-step explanation:

I'm going to assume you need to find f(g(x)) when f(x)=x^2 and g(x)=2x+1

You first need to find g(x) which is 2x+1

You then take the f(x) function and replace x with 2x+1

This means our new equation is

(2x+1)^2

Your teacher may or may not want you stop here, really only you know the answer to that

But if we expand this we'll find that (2x+1)^2=4x^2+4x+1

The equivalent expression of (f o g) is 4x² + 4x + 1.

What is a function?

function is a relationship between inputs where each input is related to exactly one output.

Example:

f(x) = 2x + 1

f(1) = 2 + 1 = 3

f(2) = 2 x 2 + 1 = 4 + 1 = 5

The outputs of the functions are 3 and 5

The inputs of the function are 1 and 2.

We have,

Two functions are given.

f(x) = x²

g(x) - 2x + 1

Now,

(f o g)(x) = f(g(x))

g(x) - 2x + 1

So,

f(g(x)) = f(2x + 1)

Now,

f(2x + 1)

= (2x + 1)²

= 4x² + 4x + 1

Thus,

The expression of (f o g) is 4x² + 4x + 1.

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The longest sea bridge, the Jiaozhou Bay Bridge in China, spans 26.4 miles. The longest sea bridge in the United States is the Lake Pontchartrain Causeway in Louisiana, which spans 41,940 yards. How much longer is the Jiaozhou Bay Bridge, in units of feet, than the Lake Pontchartrain Causeway

Answers

Answer:

2.57 yards longer

Step-by-step explanation:

Step one:

given data

We are told that the Jiaozhou Bay Bridge in China, spans 26.4 miles

Also, The longest sea bridge in the United States is the Lake Pontchartrain Causeway in Louisiana, which spans 41,940 yards

Required

Unit conversion from yards to miles

Step two:

let us convert 41,940 yards to miles

We know that 1 yard is 0.000568182 miles

hence 41,940 yards is x miles

cross multiply we have

x= 41,940*0.000568182

x=23.83 yards

Hence the difference in their lengths is

=26.4-23.83

=2.57 yards

On planet Umpt, there are 8 mimstoons to every 11 hoots. If farmer grapple has 60 hoots on his Kent farm, how many mimstoons are on the farm?

Answers

Answer:

480/11

Step-by-step explanation:

8:11 as x:60

480 = 11x

x= 480/11

Pls mark Brainiest :)

Please help! 15 points!!

Answers

Answer:

none of the answers are correct because 2 and 5 are across      

( don't know how to explain it) and they have to be the same

Which system of equations has only one solution? 0 4x+2y=8 -4x-2y=3 -5x+y = 6 5x-ya-6 0 -3x+4y= 2 3x-4y 0 0 2x+4y= 6 3x - 4y - 9​

Answers

Answer:

D) 2X + 4Y = 6

      3X - 4Y =9

Step-by-step explanation:

Hope this helps

Answer:

first one buddy

Step-by-step explanation:

Question 3
The circumference of a circle is
112.8 millimeters. Calculate the diameter
of the circle.

Answers

35.90536 is the diameter and I don’t know if you need to simplify but there’s that
I agree with the person as well have a great day:)

The area of the rectangle is 80 sq yd . The length of the rectangle measures 16 yd .

Determine the width of the rectangle.

Answers

Answer:

5 yd

Step-by-step explanation:

a = l x w

w = a ÷ l

w = 80 ÷ 16

width = 5 yd

What is the formula for finding slope​

Answers

Answer:

M = rise/run is the formula

Step-by-step explanation:

That's it

This is the formula for slope

Solve 3|x – 6| = 12. Question 13 options: No solutions x = 4 or x = –4 x = 10 or x = 2 x = 2

Answers

Answer:

x=10

Step-by-step explanation:

divide by 3 on both sides then add 6 on both sides

Answer:

the answer is x=10, x=2

Step-by-step explanation:

hope that helps

Solve for x.
3 (4-2x) = -2x
A)-1
B)1
C)2
D)3

Answers

ExplanationGiven the equation.

[tex]3(4 - 2x) = - 2x[/tex]

Distribute 3 in the expression.

[tex]12 - 6x = - 2x[/tex]

Solve the equation for x-term by making x as the subject.

[tex]12 = - 2x + 6x \\ 12 = 4x \\ \frac{12}{4} = x \\ 3 = x[/tex]

Answer Check by substituting the value of x in the equation.

[tex]3(4 - 2x) = - 2x \\ 3(4 - 2(3)) = - 2(3) \\ 3(4 - 6) = - 6 \\ 3( - 2) = - 6 \\ - 6 = - 6 \: \: \green{ \checkmark}[/tex]

The equation is true when x = 3. Therefore the answer is D. 3

Answer

[tex] \large \boxed{x = 3} \: \: \sf{or} \: \: \large \boxed{ \sf{D \: \: choice}}[/tex]

Answer:

solution

Step-by-step explanation:

3 (4-2x)= -2x

12-6x= -2x

12= -2x+6x

12= 4x

12÷4= x

3= x

D

4x - 2 - 8x = 22

help​

Answers

Answer:

x = -6

Step-by-step explanation:

4x - 2 - 8x = 22

-4x - 2 = 22

-4x = 24

4x = -24

x = -6

X=-6

Steps:

4x-2-8x=22
4x-8x-2=22. (Combine like terms)
-4x-2(+2)=22 (+2). (Subtract 4x and 8 then add 2 on both sides which will cancel the negative 2)
-4x/-4=24/-4(divide -4 on both sides which leaves x)
X=-6 (answer)

1. Simplify: (-9x3 + 4x2 – 5) - (14x2 - 10x - 3)
Show work please

Answers

Answer:

I got -9x^3-10x^2+10x-2

Step-by-step explanation:

answer ???????????????????????

Answers

Answer:

6a + 6 is answer

Step-by-step explanation:

may be this is helpful!

I GIVEEE BRAINLISTTTTT

Answers

Answer:

the ones with 16 dollar jeans


Tyson is 6 feet 2 inches tail. There are 2.5 centimeters in 1 inch What is Tyson's height in centimeters

Answers

Answer:

187.96cm

Step-by-step explanation:

Answer:

187.96 centimeters tall

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