I can get all of my information organized like this:

(I left out

Principle |
Rate |
Interest |

x | .09 | x/3(.0575)+ $425 |

x/3 | .0575 | x/3(.0575) |

Now what do I do? I know that I am probably missing something SUPER simple...:D;) ]]>

My effort: The equation can be simplified

In a survey of 60 students,

28 like mince pies,

27 like Christmas cake,

15 like turkey,

10 like mince pies and Christmas cake,

7 like mince pies and turkey,

8 like Christmas cake and turkey,

5 like mince pies, Christmas cake and turkey.

Use a Venn diagram to determine the number of students in the survey who do not like mincepies, Christmas cake or turkey. ]]>

I need the working for a partly solved simultaneous equation:

3 * ([x * 71 / 40] + 6.5) = [y * 96 / 40] + 0.9

whereby

you can substitute (88.7 x) for y and get x = 25.1

and

once you have x, you can solve again and get y = 63.6

Clearly the order of operation that I am using is wrong, as I don't get the correct answers supplied when I attempt this!

Thanks in advance. ]]>

This is my second post on this forum, I'm self studying Algebra from a book called: Teach Yourself Algebra: A Complete Introduction. Since the last problem you guys helped me with I've been cruising along and have reached 'linear equations' something I've been quite enjoying, until this question that is...

Now my difficulty here is not solving the problem per se, I've done so using mental reasoning (a kind of trial and error method where I go through different combinations of fives and twenty-fives until they make up twenty with their total equaling two-hundred cents of course), the answer is five.

No, my problem is putting this conundrum into the form of a linear equation and solving it algebraically on paper. This is what I need to be able to do, since obviously, once the problems become more complex my patchy mental trial and error is no longer going to be reliable or even workable.

Is there anyone out there who might be able to take me through the process of solving this problem using a linear equation?

Just to illustrate my thought process and perhaps give you an inkling of where I'm going wrong: the first thing I'm doing is looking for the unknown to be ascertained, which is obviously the number of children receiving 25 cents, I assign this a letter -

Now where my problem begins is that there is also another unknown in this situation: the number of children who received 5 cents, and the two unknowns are interdependent, so it seems I must give this one a letter also -

Now having two unknowns in my equation seems to throw up all kinds of problems since to find the value of one it needs to be isolated on one side with a numerical value on the other. This means removing the other of the two unknowns from the equation, which seems impossible at least as long as it remains in letter form i.e. subtract Y from one side means to subtract it from the other which means you then have

Here are the only things resembling linear equations I've been able to formulate:

Many thanks,

Tom. ]]>

My textbook tells me to model the equation A = 2500*(1.05)^t, but when I input

2500*(1.05)^t, I can't seem to get enough to show up

Other generic equations seem to be fine; something like 3x + 2, so what could I be doing wrong? From what I can tell, it's probably not anything to do with zooming.

]]>Other generic equations seem to be fine; something like 3x + 2, so what could I be doing wrong? From what I can tell, it's probably not anything to do with zooming.

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I find that all the number in this sequence is odd.

(1) What other properties this sequence have?

(2) Can I use the word "series" instead of "sequence"?

How do you know which to use when factoring and what is the difference? ]]>

The answer is maybe 25 or 24.

What is the answer? ]]>

My brother is doing algebra.

He needs to solve

4m = 12

Can someone who is good at maths, confirm that my methodology is correct as he doesn't believe me.

As to make 4m just m on it's own you need to divide by 4 so you also need to divide 12 by 4

IMG_0979.jpg

A test has 20 questions worth 100 points. The test consists of true/false questions worth 3 points each and multiple choice questions worth 11 points each. How many multiple choice questions are on the test?

I need to know how to do it for my test so I don't want just an answer, I want an explanation on how to do it, and it needs to be solved by elimination. Thanks! ]]>

For a particular loan principal of $5,000$5,000, the amount of simple interest you pay after 3 years is $300$300. Explain how you can use the simple interest literal equation to calculate the interest rate,

x^4-5x^2+4=0

x(x^3-5x+4)=0 ]]>