$$V=\dfrac 1 3 L W H$$

Michelle's box is volume

$$V_{Michelle}\dfrac 1 3 (2.5)(1.5)(1.5)=1.875in^3$$

Cora's box is volume

$$V_{Cora}=\dfrac 1 3 (3.5)(2.5)(2.5)=7.292in^3$$

$$V_{Cora}-V_{Michelle}=7.292-1.875=5.417in^3$$

which doesn't seem to correspond with any of your choices.

Cornbread..........

You ask one brother what the other one would say, and then go the opposite, because if they are lying you go the opposite of what they tell you and if they are telling the truth about what the other would say then you would still go the other way. BOOM

Well, as far as I've heard, googolplex, or googleplex, is a 1 followed by ten thousand zeros, the square of googol, or google, which is 1 followed by one hundered zeros.

4 i am pretty sure

thankyou anonymous

IDK

Bertie is correct.......this would have to be a weighted average problem if "70" is correct.

i cant see the whole entire number

obviously 0.16, 0.010 is 0.01 and 17-1 is obviosly 16

a suit is on sale for $214.60, which is 71% less than the regular price. What is the regular price?

Well....if it's 71% less....it must only be worth 29% (.29) of what it used to be.

So....call "x" the regular price.

And 29% of x = what's it worth now (the sale price)    ......   "of" means "multiply," so we have

.29 * x = 214.60   now divide by .29 on each side

x = 214.60 / .29  = $740

And that's the regular price......

You should ask your teacher if each piece of work carried the same weighting.

It could be that one or two of the assignments, (if that's what they were), were considered to be minor compared with the other (s) and therefore contributed less to your final grade.

bioschip is correct...we can't simplify it further.

If, however, you mean "simplify" by expressing it as a decimal, we have 3/4 = .75

3/4 cant be simplified

Re: 2000+48x2+3-248.5/43

First....let's write this in a more understandable fashion !!!  We have

2000+(48x2)+3-(248.5/43)

2000+ 96 + 3 - 5.779

See how much easier things become by the proper use of parentheses??

Now...it's just addition and subtraction, and you should be able to handle that................... 

what happens to the surface area of an object when enlarged

Think about it this way....area is just a function of some "width" times some "length"

Now suppose that I have 1 "square foot" of area. That would be a square with one side = 1 foot

Now suppose that I doubled the length of each side ( a scaling factor of 2)....I would have 2ft X 2ft = 4 square feet of "area"......4 times as much.

Now suppose that, instead of doubling each side, I tripled it ( a scaling factor of 3)....I would have 3ft X 3ft = 9 square feet of "area"......9 times as much

Again, suppose that, instead of doubling each side, I quadrupled it (a scaling factor of 4)....I would have 4ft X 4ft = 16 square feet of "area"......16 times as much

This leads us to believe that each suare foot of the surface of an object would behave the very same way.

Thus, the surface area increases by (n²) times when we enlarge it by some scaling factor  "n" ...(Note that n needn't be an integer....it could be anything > 1.)

I hope that helps......

it's the ÷ button.

Example fraction addition: 1/3 + 2/5

$${\frac{{\mathtt{1}}}{{\mathtt{3}}}}{\mathtt{\,\small\textbf+\,}}{\frac{{\mathtt{2}}}{{\mathtt{5}}}}$$

what makes a number rational or irrational?

If it can be expressed as a fraction (a ratio) it is rational

Thus (2/3), (5/1), (6/239) are rational....."Repeating" decimals are rational, as well - ex., .3333333333= (1/3)

Also, any "mixed" number is also rational.....5+(1/3) = 16/5

As you might have guessed by now, anything that we can't express as a fraction is "irrational"

Non-repeating decimals are irrational. Thus, things like "pi" or "e"  are irrational. Anything that remains under a "root" is also irrational....√(2), √(pi), 4√(13), for example....

Hope that helps....

What is the diameter of a circle with an area of 254.34mm²?

The area of a circle is A = (pi) * r²

So we need to "solve" for r  and then double our answer, since the diameter is twice the radius

So we have

254.34 mm² = r²    Take the sqare root of both sides

15.948 mm = r

and twice 15,948 = 31.886 mm

And there you are !!.....

A. $${\mathtt{1\,000}}{\mathtt{\,\times\,}}{\mathtt{0.099}}{\mathtt{\,\times\,}}{\mathtt{1.5}} = {\mathtt{148.5}}$$

B. $${\mathtt{1\,000}}{\mathtt{\,\small\textbf+\,}}{\mathtt{148.5}} = {\mathtt{1\,148.5}}$$

C. $${\frac{{\mathtt{1\,148.5}}}{{\mathtt{18}}}} = {\mathtt{63.805\: \!555\: \!555\: \!555\: \!555\: \!6}}$$

That is 63.806 to 3 decimal places or 63.81 to 2 decimal places. 

$${\frac{{\mathtt{282\,201\,568\,539\,770\,880\,000}}}{{\mathtt{5}}}} = {\mathtt{56\,440\,313\,707\,954\,176\,000}}$$

Well....let's suppose you had a square with a side length of 2.

The area of a square is given by

A = (s)², where A is the area and s is the side length

So,

A = (2)² = 4

See if you can do it now.......

1.5=3x0.5

2x0.5=1

So, 1 is 2/3 of 1.5

how to delete calculation history

now a "clear history" link is available in the expanded history dropdown

19 halved is 9.5.

x+7=9.5.

x is 2.5.

$$\left({\mathtt{x}}{\mathtt{\,\small\textbf+\,}}{\mathtt{7}}\right){\mathtt{\,\times\,}}{\mathtt{2}} = {\mathtt{19}} = {\mathtt{x}} = {\frac{{\mathtt{5}}}{{\mathtt{2}}}}$$