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Actually I don't want to know the answer, I have it.

I just want to know if my questions are possible to solve.

7 tenths of 80

= \(\color{red}\frac{7}{10}\times80\)

=\(\color{cyan}\frac{560}{10}\)

=\(\color{blue}\bf56 ----- Final Answer\)

Rewrite it as :

2x² - 3x + 7 = 0  (by adding 2x² - 3x to both sides)

Now you can use the solution to the general quadratic equation: ax² + bx + c = 0 

x = (-b +/- sqrt(b² - 4ac))/(2a)

Here:  a = 2,  b = -3,  c = 7

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Press the 2nd key, then choose acosh (which is the same as cosh^-1)

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What is 145?

Your question does not make sense!

If your equation was for example 1/3 + 2. you could simply divide the top by the bottom (1 divided by 3) and it will give you a decimal. You can then punch that number in instead of the fraction. 

I do not know that much about calculus. But, if you modify it slightly by dropping Pi, it seems to give the right answer: Integral(-r)^r 2 sqrt(r^2 - x^2) dx = pi r^2 for r>0.

The problem wanted me to find the surface area of the solid and to round to the nearest tenth. There is a picture of a pyramid. There are three numnbers: 4ft (base/(middle of the pyramid), 4 ft (front of the pyramid), and 10 ft (back of the pyramid). 

That guest is joking.

This site is totally free.  

You do not have to but it is better if you sign up and get known.  :)

Surface area of what???

I came here wondering the same thing. How do I input "one third" into an equation? 

Always give an example, so that we can show you how to do it.

1. One number is 5 more than twice another number. The sum of the number is 35. Find the numbers

Let one number=N

The other number=35 - N

N-5 =2[35 - N]

N-5 =70 - 2N

3N = 75 divide both sides by 3

N=75/3

N=25 One of the numbers.

35 - 25 =10 The second number.

2. John was twice Bill's age in the year 2000. Their combined age in 2010 is 71. How old were John and Bill in 2000

Let Bill's age in 2000 =B

John's age in 2000 =2B

B+10+2B+10 =71

3B =71 - 20=51 divide both sides by 3

B= 51/3

B=17 Bill's age in 2000.

17x2=34 John's age in 2000.

12C5=792 ways to choose.

Simplify the following:
(2/3)^0+(1/2)/3

(2/3)^0 = 1:
1+1/(2×3)

2×3  =  6:
1+1/6

Put 1+1/6 over the common denominator 6. 1+1/6  =  6/6+1/6:
6/6+1/6

6/6+1/6  =  (6+1)/6:
(6+1)/6

6+1 = 7:
Answer: |  7/6

Hello Guest!

Is the expression x^3*x^3*x^3 equivalent to x^3*3*3?

No!

x³ * x³ * x³ = x⁹

Potencies equal basis will be multiplied,
by adding their exponents
and the base maintains.

Greeting asinus :- )

  !

Is the expression x^3*x^3*x^3 equivalent to x^3*3*3?

NO!!. In the first one, you add the exponents(x^3*x^3*x^3=x^(3+3+3)=x^9.

While in the second one, you multiply the exponents(x^3*3*3=x^(3x3x3)=x^27.

There is very big difference between the two. Make sure you understand it.

if I was to try and find a number in between 8,011.09 (number is lower than this) and 7,999.99 (number is higher than this) and the difference is 23.13 how would I calculate it?

Your question does not make sense!!!, since the difference between the two numbers that you have given is only 11.10. If you choose a number like 8,000 it will meet your conditions, in that it is lower than 8,011.09 and higher than 7,999.99!. But what have you accomplished? If you add 23.13 to it, you get 8,023.13, which is a contradiction???????. Make sure you understand what you want. 

Simplify the following:
-2/3+(2+2/5)

Put 2+2/5 over the common denominator 5. 2+2/5  =  (5×2)/5+2/5:
-2/3+(5×2)/5+2/5

5×2  =  10:
-2/3+(10/5+2/5)

10/5+2/5  =  (10+2)/5:
-2/3+(10+2)/5

10+2 = 12:
-2/3+12/5

Put -2/3+12/5 over the common denominator 15. -2/3+12/5  =  (5 (-2))/15+(3×12)/15:
(5 (-2))/15+(3×12)/15

5 (-2)  =  -10:
-10/15+(3×12)/15

3×12  =  36:
(-10)/15+36/15

-10/15+36/15  =  (-10+36)/15:
(-10+36)/15

-10+36 = 26:
Answer: |  26/15

It's a rectangular hyperbola.

=13407 8079299425 9709957402 4998205846 1274793658 2059239337 7723561443 7217640300 7354697680 1874298166 9034276900 3185818648 6050853753 8828119465 6994643364 9006084096.

No!. It will cost you 100 bucks!!.

You are a crazy kid!!.

=1.34078079299425970995740e+154