Math and science are very similar. In science you need to know your math well in order to succeed in what you are doing.So in science you have to do a lot of math stuff in order to do your stuff right. It does not matter if you are measuring things, if you are going to experiment, or if you are simply adding or subtracting. Sometimes in science you have to find the ratio, percentage, or decimal of something. That is what we did in the Mirror Mirror on the Wall activity for science last week.
Science has a major connection with math if you want to ever be a scientist. For example you are suppose to know how many mL you have to put in this other liquid to work. Or like if you want to find how much different the climate is on the mountains then at sea level . You have to know how much to climb up or how much the difference is by subtracting. Also when you want to combine some chemicals math is involved. You need to know how much of each to put into the mixture so that it does not over flow or even explode. Math and science have a lot of things witth each other. SO in order to be good in science be good in math!
Negative numbers are real numbers that are less than zero. That usually mean that when you subtract a bigger number than the other number. For example, lets say : 2-6. Six is bigger than two so you can't subtract without having to go into the negatives. Before, in school the teachers would not let us solve those kinds of equations because they were not possible. That is only what they said because we still did not know about the negative numbers. So in other words, negative numbers are leftovers that you di not have enough to take away. The sign - represents negative numbers.
In real life negative numbers are usually bad. Let's take that as someone owing money. In real life negative numbers can be referred to money in banks. Like when someone owes money to the bank, the money they owe is represented as negative numbers. So now you know what real numbers are and how they are used in real life situations. Also, negative numbers usually mean debts, so in really life they are bad. You have to have positive numbers in real life because if you have negatives you are in trouble.
There are various ways that you can convert a decimal into a fraction, but there are two that I know about. One way is to move the decimal to the left until you convert the decimal into a whole number. Then put that number over a 10, 100, 1000, or a one with one more zero as the digits the decimal has . The last thing you do is to simplify so that you can make that fraction become much smaller. For example let's say that we have .75 .
We have to move the decimal to the left two times. The whole number is now 75. After that you have to put it over 100 making the fraction become 75/100. The last step would be to simplify. In this case you can divide both the numerator and the denominator by 25. So, you simplified answer would be 3/4.
If you were to solve the equation 2x-7=15, How would you solve? To me this is a very easy equation. Especially since at the end the problem can be solved without a problem. There is no need for you to get decimal or to round, all you have to divide and you can solve what x is. One thing you have to remember when doing equations like this, that whatever you do to one side you have to the other. In order to solve for x in this equation, you have to get x alone.
The first you thing you have to solve for x, is to add 7 to both sides of this equation. This makes x to be isolated much better and easier. So, now you have the equation transformed into 2x=22. You can probably already know what the answer is right ways since this is a very easy term. Now you just have to divide both sides by 2. Your answer is 11. X equals 11. So this is how you solve for x.
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