1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Free_Kalibri [48]
3 years ago
13

What is the volume of the cube? 2 1/2​

Mathematics
1 answer:
alekssr [168]3 years ago
3 0

Answer:

a^3

Hope this helps

You might be interested in
I need some help with this question
nadezda [96]
Given the dimensions of 72 yards by 1.5 yards, we can find that the total area of material the manufacturer has is 72 x 1.5 = 108 sq. yards. Dividing this by the 2.7 sq. yards required per shirt, they can make 108/2.7 = 40 shirts.
5 0
3 years ago
Please help with math problem if do 5 star
sasho [114]

Answer:

A

Step-by-step explanation:

yes

4 0
2 years ago
Use complete sentences to describe why √-1 ≠ -√1
tekilochka [14]

Well let's say that to compare these two numbers, we have to start with the definition first.

<u>D</u><u>e</u><u>f</u><u>i</u><u>n</u><u>i</u><u>t</u><u>i</u><u>o</u><u>n</u>

\displaystyle \large{ {y}^{2}  = x} \\  \displaystyle \large{ y =  \pm  \sqrt{x} }

Looks like we can use any x-values right? Nope.

The value of x only applies to any positive real numbers for one reason.

As we know, any numbers time itself will result in positive. No matter the negative or positive.

<u>D</u><u>e</u><u>f</u><u>i</u><u>n</u><u>i</u><u>t</u><u>i</u><u>o</u><u>n</u><u> </u><u>I</u><u>I</u>

\displaystyle \large{  {a}^{2}  = a \times a =  |b| }

Where b is the result from a×a. Let's see an example.

<u>E</u><u>x</u><u>a</u><u>m</u><u>p</u><u>l</u><u>e</u><u>s</u>

\displaystyle \large{  {2}^{2}  = 2 \times 2 = 4} \\  \displaystyle \large{  {( - 2)}^{2}  = ( - 2) \times ( - 2) =  | - 4|  = 4}

So basically, their counterpart or opposite still gives same value.

Then you may have a question, where does √-1 come from?

It comes from this equation:

\displaystyle \large{   {y}^{2}  =  - 1}

When we solve the quadratic equation in this like form, we square both sides to get rid of the square.

\displaystyle \large{   \sqrt{ {y}^{2} } =   \sqrt{ - 1}  }

Then where does plus-minus come from? It comes from one of Absolute Value propety.

<u>A</u><u>b</u><u>s</u><u>o</u><u>l</u><u>u</u><u>t</u><u>e</u><u> </u><u>V</u><u>a</u><u>l</u><u>u</u><u>e</u><u> </u><u>P</u><u>r</u><u>o</u><u>p</u><u>e</u><u>r</u><u>t</u><u>y</u><u> </u><u>I</u>

\displaystyle \large{  \sqrt{ {x}^{2}  } =  |x|  }

Solving absolute value always gives the plus-minus. Therefore...

\displaystyle \large{  y =   \pm \sqrt{ - 1}  }

Then we have the square root of -1 in negative and positive. But something is not right.

As I said, any numbers time itself of numbers squared will only result in positive. So how does the equation of y^2 = -1 make sense? Simple, it doesn't.

Because why would any numbers squared result in negative? Therefore, √-1 does not exist in a real number system.

Then we have another number which is -√1. This one is simple.

It is one of the solution from the equation y^2 = 1.

\displaystyle \large{   {y}^{2}  = 1} \\  \displaystyle \large{    \sqrt{ {y}^{2} }  =  \sqrt{1} } \\  \displaystyle \large{  y  =  \pm  \sqrt{1} }

We ignore the +√1 but focus on -√1 instead. Of course, we know that numbers squared itself will result in positive. Since 1 is positive then we can say that these solutions exist in real number.

<u>C</u><u>o</u><u>n</u><u>c</u><u>l</u><u>u</u><u>s</u><u>i</u><u>o</u><u>n</u>

So what is the different? The different between two numbers is that √-1 does not exist in a real number system since any squared numbers only result in positive while -√1 is one of the solution from y^2 = 1 and exists in a real number system.

5 0
3 years ago
Read 2 more answers
X(2x-8) = 0 how do you solve
sleet_krkn [62]

x * 2x = 3x   X*-8= -8x

minus 3x on both side

= -11x

-11x = 0

divide -11 on both side

= 0

4 0
3 years ago
Use the distributive property to simplify the expression: -5(4W - 3s + 1)
Eva8 [605]

Answer:

-20w+15s-5

Step-by-step explanation:

-5*4w= -20w

-5*-3s= 15s

-5*1= -5

7 0
3 years ago
Other questions:
  • Adrienne answered all 21 multiple choice questions correctly. If her teacher decided to let one of the questions count as bonus,
    5·1 answer
  • Jim’s football team started a play on the 50 yard line. On the first play, the team had a 7-yard gain. On the second play, they
    13·1 answer
  • Please answer correctly !!!!!!!!!!!! Will mark brainliest !!!!!!!!!!!!!
    7·1 answer
  • HELP AND QUICK
    12·2 answers
  • If m = 80° and m = 40°, then m 2 =<br><br> A)20<br> B)40<br> C)60
    11·1 answer
  • ‼️GIVING BRAINILEST AND PLEASE DONT SCAM‼️
    5·1 answer
  • 3/4 -2 4/5 I NEED HELP ASAP PLS HELP ME
    9·2 answers
  • Can somebody please help me?<br> 2+2
    6·2 answers
  • PLEASEEEEE help me on these 2 questions.
    14·1 answer
  • Denise has taken four math tests this semester and
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!