A cube has an edge length of 21 cm. What is the volume?
o 212 cm3
o 6 x 21 cm
o 213 cm
o 3x21 cm3

Answers

Answer 1

Answer:

Step-by-step explanation:

Volume = 21^3 cm^3.


Related Questions

(x+6)(−x+1)=0
least to greatest

Answers

Answer:

0=(-x+1)(x+6)

Step-by-step explanation:

Can somebody help me with this?

Answers

Answer:

wrong

Step-by-step explanation:

(2(x + 13)) /3

the expression says x = 5, so let's check:

(2(5 + 13)) /3

36/3 = 5...FAKE

Helppppp please answer 30 pointssss

Answers

Answer:

[tex] \frac{x}{3} = \frac{7x}{12x - 15} \\ 12 {x}^{2} - 15x = 21x \\ 12 {x}^{2} -36x = 0 \\ 12x(x - 3) = 0 \\ \boxed{x = 0} \: or \: \boxed{x = 3} \\ \\ \frac{25 - 3x}{x + 5} = 1 \\ 25 - 3x = x + 5 \\ 3x + x = 25 - 5 \\ 4x = 20 \\ \boxed{ x = 5} \\ \\ \frac{3x - 2}{x} = - \frac{8}{x} \\ 3 {x}^{2} - 2x = - 8x \\ 3 {x}^{2} -6x = 0 \\ 3x(x - 2) = 0 \\ \boxed{x = 0} \: or \: \boxed{x = 2} \\ \\ \frac{3 - x}{x} = \frac{x + 1}{2x} \\ 6x - 2 {x}^{2} = {x}^{2} + x \\ 3 {x}^{2} - 5x = 0 \\ x(3x - 5) = 0 \\ \boxed{x = 0} \: or \: \boxed{x = \frac{5}{3} }[/tex]

Finding the nth term of this sequence: (by the way I'm learning quadratic sequences=
-2 -8 -18 -32 -50

Answers

Answer:

n^2+2n+1

Step-by-step explanation:

-2-8-18-32-50

difference=-6-10-14-18

common differences=-4-4-4-4-4

 -2-8-18-32-50

n^2=1,4,9,16,25

minus it

=-1,-4,-9,-16,-25

differences 2,5,7,9

common differences=2

2,4,6,8

so 2n+1

so the answer is n^2+2n+1

Sue earns a $97.50 bonus. Her financial advisor has her save 3/10 of it. Sue buys concert tickets that $22.75 each using the rest of her bonus. How many can she buy?

Answers

Answer:

She can buy 3

Step-by-step explanation:

She can buy 3 concert tickets.

what is the slope of (-3,3) and (-3,13)

Answers

Answer:

10

Step-by-step explanation:

y2-y1/x2-x1. subtract the two and reduce the fraction

Please help fast
What system of linear inequalities is shown in the graph?
Enter your answers in the boxes.

Answers

Answer:

Y > 2x - 3

Y > -1/2x + 2

Step-by-step explanation:

The dotted line is a function of y=2x - 3,

And the solid line has a function of y= -1/2x + 2

Because the line is dotted for the first line I picked, it is > and because the other is solid it is >.

Answer ASAP

angle A and angle B are complementary angles. The measure of angle A is (3x)"
and the measure of angle B is 45°. What is the value of x?

Answers

Answer:

x = 15°

Step-by-step explanation:

Complementary angles are two angles whose sum = 90°

∠A + ∠B = 90°

3x + 45 = 90

3x = 45

x = 45/3

x = 15°

Question is in image.
a. x = 4, RS = TS = 23, RT = 7
b. x = 2, RS = TS = 20, RT = 5
c. x = 3, RS = TS = 29, RT = 8
d. x = 5, RS = TS = 18 RT = 4

Answers

Answer:

C.

Step-by-step explanation:

HOPE ITS HELP

whith jrverano2010

Solve the inequality- 5/2(3x+4)<6-3x. Show your work.

Answers

Answer:

x < -8/21

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

[tex](\frac{5}{2} * 3x) + (\frac{5}{2} * 4) < -3x + 6[/tex] [tex]\frac{15}{2}x + 10 < -3x + 6[/tex]

Step 2: Add 3x to both sides.

[tex]\frac{15}{2}x + 10 + 3x < -3x + 6 + 3x[/tex] [tex]\frac{21}{2}x + 10 < 6[/tex]

Step 3: Subtract 10 from both sides.

[tex]\frac{21}{2}x + 10 - 10 < 6 - 10[/tex] [tex]\frac{21}{2}x < -4[/tex]

Step 4: Multiply both sides by 2/21.

[tex]\frac{21}{2}x * \frac{2}{21} < -4 * \frac{2}{21}[/tex] [tex]x < -\frac{8}{21}[/tex]

Therefore, the answer is x < -8/21.

 Simplify: 2k– 3k+ 3k ​

Answers

Step-by-step explanation:

2k - (3k - 3k) = 2k

please give me a brainliest answer

Answer:

2k

Step-by-step explanation:

Because all the values in our equation have the same variable, k, we can simply combine them.

We can begin with the first part of the equation:

2k - 3k

As you can see, we have to subtract, so 2 - 3 = -1, therefore, our answer right now is :

-1k, or -k

Now, we add on our other part of the equation:

-1k + 3k

We have to add now, so -1 + 3, which is the same as 3 - 1, equal 2. So, our most simplified form of this number sentence is:

2k

Hope this helps :)

.Write 1.2 - 10-5 in standard form​

Answers

1.2 .10/2=120.0( standard form)

because the exponent of the 10s term is positive we must move the decimal point 2 places to the right.



Can you mark this Brainliest? Thanks love!!

write the equation of the line parallel to the given line y = 2x - 4

Answers

Answer:

y=2x-8

Step-by-step explanation:

Plot the line and use the parallel slope to create the line and then find the y-intercept

Identify the graph of the compound inequality (-2 <2x-6) (3x-12 510)

Answers

Answer:

Step-by-step explanation

just plug in 0 for z so it would change to -2<6

Write a recursive formula for the sequence 2,-4,8,- 16,
PLEASE HELP ASAP!!!!!!!!

Answers

Answer:

[tex]2 \times { (- 2)}^{n - 1} [/tex]

Please I actually need this done

Answers

Answer:

AC = 19

Step-by-step explanation:

A__C__S

AS = AC + CS

6x -4 = (4x-1) + 7

6x - 4 = 4x + 6

6x - 4x = 6+ 4

2x = 10

x = 10/2

x = 5

AC = 4x -1 = 4(5) - 1 = 20 - 1 = 19

I hope I helped you^_^

Answer:

19

Step-by-step explanation:

AS = AC + CS

6x - 4 = 4x -1  +7

6x - 4 = 4x + 6

Add 4 to both sides,

6x = 4x + 6 + 4

6x = 4x + 10

Subtract 4x from both sides

6x- 4x = 10

2x = 10

Divide both sides by 2

x = 10/2

x = 5

AC= 4x - 1

    = 4*5 - 1

     = 20 - 1

     = 19

I need help on this question plz and thank you
(Question 5 and if you can number 3 as well)

Answers

H = -2r + s/πr

C = 3A-a-b

If you need step by step comment

Please help this needs to be done by the end of the day​

Answers

I’ll ask one of my friends if they know! I get back with you

Ms. Howard buys a car for $500 and adds a music system that costs $200. Then she adds a set of seat covers for the price shown.

A photo of two seat covers is shown. A price tag reads, Sale, fifty dollars.

Answers

Answer:

$750 that is the answer if you add them all up

PLEASE HELP DUE IN 10 MINUTES HURRY!!!!!
Find two points from this graph below. Then determine what the slope is.

Answers

Answer:

5/3

Step-by-step explanation:

(-2,-5) and (1,0)

using the slope formula you get your answer

i need help please thank you

Answers

Answer:

b = 12

Step-by-step explanation:

hi! so this looks like a right triangle because it has a right angle which is 90 degrees! that means we can use the Pythagorean theorem to solve for the missing leg.

The Pythagorean theorem: [tex]a^{2} + b^{2} = c^{2}[/tex]

a and b will be the two shorter legs, so it does not matter which of the two legs are which! in this problem, 5 and b (the missing leg) are the two shorter legs! c is always the hypotenuse, which is the sloped-looking line. in this problem, 13 is the hypotenuse! this line is the longest side on every right triangle!

Let's solve for the missing leg now!

1) first, we need to plug in the missing numbers into the equation

[tex]5^{2} + b^{2} = 13^{2}[/tex]

2) next, let's simplify the problem

[tex]25 + b^{2} = 169[/tex]

3) now, let's isolate the variable, b

[tex]b^{2} = 144[/tex]

4) finally, we have to take the square root of b so it will be b not [tex]b^{2}[/tex]

b = 12

Let's plug in our answer to the equation to check if it is correct!

[tex]5^{2} + 12^{2} = 13^{2}[/tex]

25 + 144 = 169

169 = 169 hooray!

you do not have to do all of this work if you memorize the Pythagorean triples!

(3, 4, 5), (5, 12, 13), (7, 24, 25), (8, 15, 17) , (9, 40, 41)these are automatic matches! for example: [tex]3^{2} + 4^{2} = 5^{2} --> 9 + 16 = 25 --> 25 = 25[/tex]

comment or message if you have any questions :)

Write a statement and reason proof.

Answers

Answer:

l want to do all your math

Answer:

<XPE = <ENY

Step-by-step explanation:

<1=<2 (GIVEN)

SO <3+<4= <5+<6

<3=<4 (PE Bisects <APN)

<5=<6 (EN bisects <ANP)

so <3=<5

than <XPE=< ENY

What is the formula for distance?

Answers

Answer:

Hope my answer helps you mark me brianliest plz

Step-by-step explanation:

d =√(x2-x1)+(y2-y1)

PLEASE HELP 20 points!

Answers

The answer is y = 0.02 (0.05)^x

Exponential functions follow the form y = ab^x.

a is the y intercept when x is at 0. Because the last part, b^x will just be 1 since any number raised to 0 is 1.

b is the multiplier, and it’s raised to how many times it’s being multiplied.

So like you said, it’s being multiplied by 0.5. b = 0.05. And a=0.02.

which ordered pair is a solution to the equation

Answers

B) Only (1, 3)

2x + 3y = 10

Substitute (2,2) into the equation:
2(2) + 3(2) = 10
4 + 6 = 10 which is true

Substitute (1,3) into the equation:
2(1) + 3(3) = 10
2 + 9 is not equal to 10

The five numbers 4, 9, 15, 20, and 27 are placed in the boxes below to make a true statement. What is the sum of the numbers placed in the boxes in the numerators on the left-hand side:

Answers

Hope this helps, happy Halloween

1/1 or 9/9 sorry gfujshejai

HELP ASAP SHOW YOUR WORK AND EXPLAIN HOW YOU GOT YOUR ANSWER-NO LINKS OR JOKING AROUND

4. The steps for solving 7x + 3 = 52 are shown. Explain how each step helps solve the equation. Include the phrases, "Isolate the variable by _____," "Simplify," and "Isolate the variable term by _____" in your answers.

Answers

Answer:

x = 7

Step-by-step explanation:

Rearrange the equation to make x the subject.

Original:

7x + 3 = 52

subtract 3 from both sides

7x = 52 -3

7x = 49

Divide both sides by 7

x = 49/7

x = 7

what is


-9 x 1/2


in fraction form

Answers

Answer:

-9/2

Step-by-step explanation:

-9  is the same as -9/1

if we multiply -9/1 and 1/2 we multiply the numerators to get -9 and multiply denominators to get 2 or -9/2

Find the binomial expression of

(x-5) (×-5)​

Answers

Answer:

x^2-10x+25

Step-by-step explanation:

(a+b)^2=a^2+2ab+b^2 so a=x and b=-5 so the expression is x^2-10x+25

Answer:

x^2-10x+25

Step-by-step explanation:

Distribute

(x-5)(x-5)

x(x-5)-5(x-5)

Distribute again

x(x-5)-5(x-5)

x^2-5x-5(x-5)

Distribute one last time

x^2-5x-5(x-5)

x^2-5x-5x+25

combine like terms

x^2-5x-5x+25

x^2-10x+25

Bella is planning a proof for the Isosceles Triangle Theorem using the following information and diagram. Given: APQR is an isosceles triangle with base PR Prove: ZP ZR First, she draws the angle bisector of ZQ and labels it QB. She plans to show that ZP and ZR are corresponding parts of congruent triangles. Which congruence criterion can be used in her proof to show that APQB ARQB? A. ASA B. SAS C. SSS

Answers

Similar triangles may or may not be congruent.

The congruent criterion to use in her proof is (b) SAS theorem

From the question, we understand that she draws an angle bisector from [tex]\mathbf{\angle Q}[/tex] to side PR

This means that, either sides of angle Q are congruent. (this is represented by A i.e. angle)

When [tex]\mathbf{\angle Q}[/tex] is bisected, sides PB and RB become congruent

i.e. [tex]\mathbf{PB \cong RB}[/tex] ... (this is represented by S i.e. side)

Lastly, both triangles share a common side at QB .. (this is also represented by S i.e. side)

So, we have: SAS

Hence, the congruent criterion to use in her proof is (b) SAS theorem

Read more about similar and congruent triangles at:

https://brainly.com/question/19589236

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