All Answers 356096 Answers

thanks so much! for all of your help!

I think your teacher or your book expected two simple whole integers, which are:

-81 x 4 = - 324

-81 + 4=-77

But it doesn't work for 324 because it gives a negative answer. Unless you made a mistake?.

what two numbers multiply to give 324 but add to make -77?

a * b =324, a+b=-77, solve for a,b

a=-4.46693

b=-72.53317

It is this key  "√x" .

Let the number of student tickets=S

Number of adult tickets sold =295 - S

2S + 5[295 - S] =950

2S + 1,475 - 5S=950

-3S = -525 divide both sides by -3

S =-525/-3

S=175-student tickets were sold.

295 - 175 =120-adult tickets were sold.

n=Log(1/9) / Log(3) = -2

What is $2.25+$0.20+$0.20=$2.65 (you couldn't add them up? Why not?)

Verify the following identity:
cos(x+pi/2)  =  -sin(x)

cos(pi/2+x) = cos(pi/2) cos(x)-sin(pi/2) sin(x):
cos(pi/2) cos(x)-sin(pi/2) sin(x)  =  ^?-sin(x)

cos(pi/2) = 0:
0 cos(x)-sin(pi/2) sin(x)  =  ^?-sin(x)

sin(pi/2) = 1:
-sin(x)  =  ^?-sin(x)

The left hand side and right hand side are identical:
Answer: |  (identity has been verified)

19)

Evaluate 2 x^2-3 x^3 where x = -1:
2 x^2-3 x^3  =  -3×(-1)^3+2×(-1)^2

(-1)^3 = -1:
2×(-1)^2-3-1

(-1)^2 = 1:
-(-3)+2

-3 (-1)  =  3:
3+2

3+2 = 5:
Answer: 5

20)

-3x^3 + 2x^2=?, where x=1/2

-3.(1/2)^3 + 2.(1/2)^2 =

[-3 x 1/8] + [2 x 1/4] =

[-3/8] + [ 1/2] =1/8

6/(tan(40)) i think that is how i would put into my calculator. this way you would get 7.150521556. there are probablly more numbers but that is where my calculator stops at. you would type 6 divided by (tan button 40)) and hit enter. i hope this helps! :)

it would be -3.192+r i think i hope this helps all i done was combine like terms and added the r because it did not combine with anything.

if you put it in brackets like this:                                     (1-3) + (4-6) + (7-9) .....

you can see that it is one -2 every 3 numbers:           (-2) + (-2) + (-2) ...

if we now go up to -300 we have:                                 -2 * 100 = -200

now u only need to add the 301 to the -200:              -200 + 301 = 101

so the solution is 101. 

Find the least common multiple:
lcm(20, 40, 30)
Find the prime factorization of each integer:
The prime factorization of 20 is:
20 = 2^2×5
The prime factorization of 40 is:
40 = 2^3×5
The prime factorization of 30 is:
30 = 2×3×5
Find the largest power of each prime factor.
The largest power of 2 that appears in the prime factorizations is 2^3.
The largest power of 3 that appears in the prime factorizations is 3^1.
The largest power of 5 that appears in the prime factorizations is 5^1.
Therefore lcm(20, 40, 30) = 2^3×3^1×5^1:
Answer: |  lcm(20, 40, 30) = 120

What is the sum of digits of 123,789,456 in base 5? How would you do that? Thanks for help.

Start as follows:

1) 123,789,456/5=24,757,891.2. Multiply the decimal 0.2 x 5=1

2) 24,757,891/5=4,951,578.2.     ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,=1

3) 4,951,578/5 =990,315.6          ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,0.6 x 5=3

Continue the process to the end and you will get:

223142230311(base 5), then you add them all up and you get=24, which is your answer.

I agree. That is weird.

But CPhill and guest are both correct

Some nimber plus 30% is ambiguous.  30 % of what?

If you want 15.99 + 30% of 15.99

Then ypu should have tje skill to enter this as. 15.99 + 0.30×15.99

 first set, as y 2 = x 2 , which assigns to every x the two values y = + x and y = − x.

For each d in D there exists some c in C such that (d,c) is an element of f. I.e. the function is defined for every element of D.

dese nuts

Some calculators thinks 30% = 0.30. 

When you do "15.99 + 30%" the calculator thinks "15.99 + 0.30"

is the settings on my calcutator wrong? how do i reset it?

If you just want to increase 15.99 by 30%.......try this.....

15.99 * 1.3          ..... it should give you  20.787

\(7\frac{1}{5}-3\frac{3}{4}\)

\(\frac{36}{5}-\frac{15}{4}\)

\(\frac{144}{20}-\frac{75}{20}\)

\(\frac{69}{20}\)

\(3\frac{9}{20}\)

\(3.45\)

30% of 20 is what number=30/100 x 20 =0.30 x 20 =6

30%  = .3

So

.3 * 20   =  6

12.79% is yearly rate compounded every year for 10 years. Example:

$300 x 1.1279 =$338.37.........Year 1

$338.37 x 1.1279 =$381.65....Year 2

$381.65 x 1.1279 =$430.46....Year 3......and so on. If you continue like this, you should get $1 trillion in 10 years.

or over the 10 year period?