All Answers 358411 Answers

Nice one Chris :)

Here are some possible suggestions.  I hauled the addresses out of our reference material sticky topic :)

z score probabilities - this is great

$$300\sqrt3$$

this is an irrational number and it cannot be further simplified. 

However, if you want to estrimat it you can put it into the web2 calc like this

300*sqrt(3)

$$\\(8\sqrt{3})^2=64*3=192\\\\
OR\\\\
8*(\sqrt3)^2=8*3=24$$

- 5 (a+6)

=-5*a + -5*6

=  -5a  -  30

Hi siera,  it has been nice seeing you on the forum :)

You question is open to different interpretaions.

A)

I would let y = the number of early deliveries and x be the number of standard customers (orders)

$$y=320+\frac{3x}{20}$$

B)

More y means more ealy deliveries, this would happen if there were more standard cutomer (orders)

C)

y= kx               where k can be any number greater that     $${\frac{{\mathtt{3}}}{{\mathtt{20}}}}$$

the slope for this line would be steeper than the other one because the gradient is bigger.

9+10 equals 19.....

exactly the same as you wrote it here. :/

(3/4-2/3)+(1/2+1/3)=

$$\left({\frac{{\mathtt{3}}}{{\mathtt{4}}}}{\mathtt{\,-\,}}{\frac{{\mathtt{2}}}{{\mathtt{3}}}}\right){\mathtt{\,\small\textbf+\,}}\left({\frac{{\mathtt{1}}}{{\mathtt{2}}}}{\mathtt{\,\small\textbf+\,}}{\frac{{\mathtt{1}}}{{\mathtt{3}}}}\right) = {\frac{{\mathtt{11}}}{{\mathtt{12}}}} = {\mathtt{0.916\: \!666\: \!666\: \!666\: \!666\: \!7}}$$

Great work MG.

You final answer can be changed into a mixed numeral. :)

It was really good to see you try LaTex but if you are going to use the / sign you must use brackets.

You have written

2*5/4*5+3*4/4*5

simplified this means

$$\\=\frac{2*5}{4}*5+\frac{3*4}{4}*5\\\\
=\frac{2*5}{4}*\frac{5}{1}+\frac{3*4}{4}*\frac{5}{1}\\\\
=\frac{2*5*5}{4}+\frac{3*4*5}{4}\\\\
=\frac{50}{4}+\frac{60}{4}\\\\
=\frac{110}{4}\\\\
=\frac{55}{2}\\\\
=27\frac{1}{2}$$

THIS IS OBVIOUSLY NOT WHAT YOU INTENDED

So this is how you needed to write it

(2*5)/(4*5)+(3*4)/(4*5)

which really does mean

$$\frac{2*5}{4*5}+\frac{3*4}{4*5}$$

This was my LaTex coding for these fractions. :)

\frac{2*5}{4*5}+\frac{3*4}{4*5}

---------------------------------------------------------

Here is some more - only do them if you want to.  :)

Hint:  Don't make a big deal out of these - they are quite simple.

$$\\1)\;\; 6-\frac{2}{3}\\\\
2) \;\;12-3\frac{5}{9}\\\\$$

 y= -.04x^2+1.2x.....I assume you want to find the roots of this polynomial

First....set it to 0

  -.04x^2+1.2x  = 0      multiply through by 100 to clear the decimals

-4x^2 + 120x = 0   factor

-4x( x - 30) = 0       set each factor to  0

-4x = 0    divide by-4 on both sides and x = 0

x - 30 = 0    add 30 to both sides and  x = 30

Post your questions...we'll see what we can do..!!!

That is not quite right Siera,

Can you fix it ? then I will give your the points :)

3, 5, 15, 25 all divide 75

This looks like you want to know the ending amount for an investment of $3500 compounded semi-annually for 15 years at 8% per annum.....if so we have...

3,500(1+.08/2)^2^15 =

3500(1.04) ^30  =

about $ 11,351.89  

What is the question?

Use the distributive property:  19(10 - 18q)  =  (19)(10) - (19)(18q)  =  190 - 342q

Using the distributive property:  (2x + 4)(x - 4)  =  (2x)(x) + (2x)(-4) + (4)(x) + (4)(-4)  

      =  2x² - 8x + 4x - 16     =     2x² - 4x - 16

b⁰ = 1 for every value of b except when b = 0.

z-score = [data point - average] / standard deviation.

If the z-score for data point a is 0, a must be the average, which is 45.

The value of b can't be determined unless you know the standard deviation.

A) isn't true if x = 0 because 0⁰ ≠ 1.

B) isn't true if x = 0 because division by zero is undefined.

C) isn't true if x is a negative number, because of the difficulty of finding the square root of a negative number.

Therefore,  ...

3,520 yards

the angle is 90 degress 

Yes, i think that is the distribution property

Be careful here!!!!

We can "cancel" multiplication/division .....i.e.,    √[a^2 * b^2]  = a * b   or  √[a^2/b^2] =  a/b   {assuming a and b are positive}

But .... we can't "cancel" addition/subtraction....

In general ....  √[a^2 ± b^2]  ≠  a^2 ± b^2

This is a common mistake....!!!!

Just too kind!