there are 27 red or blue marbles in a bag. The number of red marbles is 5 less than 3 times the number of blue marbles. How many
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My father taught me a method that I call, 'throwing some thing over the wall'. There is a sample equation for the first picture that shows you how it works. It's a great way to help isolate the variable and I hope that it works for you. The second picture contains the answers I got through the use of this method. I'm sorry for the messy handwriting; I was on a bus.
The scale factor is:
So you divide the corresponding lengths and the ratio you get is the scale factor. Hope it helps!
So you divide the corresponding lengths and the ratio you get is the scale factor. Hope it helps!