All Answers 358460 Answers

14 ÷ 416 = 0.03365384615

WOW - now that is a full and very accurate answer  

Not quite Saseflower.

2x-3 (4x+7)

the minus belongs to the 3 so tis expands to

2x-12x-3*7 = -10x-21

You have to be very careful with those minus signs :)

It was a really good presentation and almost right - Ill give you your points now but you should duck in and fix it up.  

f(n)=4n+3

n          1      2      3      4

f(n)     7      11   15    19       etc

Thanks Tenacious.  I shall have to give that hyperlink a go :)

your factorising was done beautifully.  Yes the trinomial must be in order.  $$x^2$$    first then $$x$$  then the constant.  

Here is a slightly different type of factorising.  they are not hard - see if you can work it out - maybe you already know.

HINT:    factorise  5xy-2y     Can you see the similarity?    

1)  5x(x+3)-2(x+3)  

2)   -7x(2x-1)-(2x-1)

simple interest or compound interest?

The answer is 72

Is it simple interest or compound interest. ?

Just plud in the numbers and put it into a calculator.

you do not haave to rearrange anything

You are both right.  

If you see it on the calculator answer then saseflower would be correct. (Although usually it is a capital E)

If you see it on a calc button then it is the irrational number 2.718....  Just like CPhill said  

Almost Saseflower,  When you multiply or divide by a negative number you have to turn the sign around.

Lok at this

12>8    true....yes

divide by -4

12/-4>8/-4

-3>-2     is that true ?   NO it is not - you have to turn the sign around.

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

You also have to swap the sign around if you swap side     

eg    6>8

but   8<6

And lastly,  You also have to swap the sign if you take the reciprocal of both sides

ex      $$\frac{6}{5} <2$$

but    $$\frac{5}{6} > \frac{1}{2}$$

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

Other than the sign swap your answer was fabulous.  Fix it up (by editing) and I will give you 3 more points :)

45 Miles.

2 Inches : 9 Miles = 1 inch : 4.5 Miles

Then you multiply both sides by 10.

10 Inches : 45 Miles.

In this case, saseflower, the "e" stands for the irrational number 2.718.......... 

It serves as a base for something called the "natural logarithm"

As you take more science courses in school, you will encounter this number, sooner or later....

If y is directly  proportional to x then

$$\\y\;\alpha\; x\\
y=kx$$

where k is an integer.

7 2/3 + 8 5/6 =

First, find the common denominator, which is 6

7 4/6 + 8 5/6 =

Now add those 2 numbers together

15 9/6 (I show it as an inproper fraction so you can see how it turns into the answer below)

Simplify

16 3/6

Simplify again

16 1/2

And there's your answer!

If a number is too big or too small to fit in a calculater display, often scientific notation using the letter E (or e) for exponent (power or index) will be used

-4 (x - 3) > -4

Use distributive property

-4x - (-12) > -4

Simplify (you can skip this step and instead put the equation that is below, up ^ if that makes sense)

-4x + 12 > -4

Subtract 12 from both sides

-4x > -16

Divide by -4 on both sides

x > 4

And there's your answer :)

The percent change (increase) is given by....

[ New Value - Old Value ] / [ Old Value ] x 100%

So we have

[12 - 10 ] / [ 10 ] X 100%  =

[2 / 10] X 100%

1/5  X 100%   =  100% / 5  =

20%

(1⁄3)9³

=(1⁄3)9×9×9

=(1⁄3)81×9

=(1⁄3)729

=729⁄3

=243⁄1

=243

To solve your question you would need to know what the value of n is.

If n=3 then your equation would be 4(3)+3, which equals 15.

If n=2 then your equation would be 4(2)+3, which equals 11.

If n=8 then your equation would be 4(8)+3, which equals 35.

Your equation will still only be 4(n)+3 until you find the value of n, an when you find out what the value of n is you replace n with that value. I hope that this helps.

I'll second Melody.....your answers are well-presented, saseflower...!!!

This is a very tiny positive number so it lies between 0 and 1