How to rewrite decimals to fractions before adding

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Answer 1
Answer: Step 1: Write down the decimal divided by 1, like this: decimal/1Step 2: Multiply both top and bottom by 10 for every number after the decimal point. (For example, if there are two numbers after the decimal point, then use 100, if there are three then use 1000, etc.)Step 3: Simplify  (or reduce) the fraction . ( Did That Help ? ) 
Answer 2
Answer: fraction divide e.g. 7/20 is 7 divide by 20 equals 0.35.
in decimals you times it by 100
e.g. 0.35 x 100 equals 35%

and if your trying to find the fraction all yoju do is do the oposite

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I need helpppppppppp

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Go onto desmos.com and you can just input the functions into the graph and match which goes to the graph

Suppose that the function f ( x ) = 2x + 12 represents the cost to rent x movies amonth from an internet movie club. Makayla now has $10. How many more dollars does Makayla need to rent 7 movies next month?

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x=7\ \ \ \ \Rightarrow\ \ \ f(x)=2\cdot7+12=14+12=26\ [\$]\n\n\$26-\$10= \$16\n\nAns.\ Makayla\ need\ \ \ \$16.
Calculating f(7)

f(7) = 2.7 + 12
f(7) = 14 + 12
f(7) = 26

He/She needs 26 - 10 = 16 dollars

Give me as many digits of pi as you can remember?

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3.1415926 thats all i remember lol hope this helps

How to make 4 3/8 in simplest form

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According to my knowledge, that mixed number already is in its simplest form. Turn it back into a fraction and it isn't divisible. A mixed number and 3 can't be divided perfectly by 8 or anything in common. So 4 3/8 is already in it's simplest form.

Can negative 4 divided by 15 be shown as a fraction?

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yes it would just be negative 4 over 15. or use a decimal which is negative .2666666667
yes it can because if the division problem doesn't have an answer or it is to long you just turn it into a fraction

Determine the domain and range of the function F(x)=(x-3) {exponent of 2 behind the parentheses}

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That's a parabola. Inside the parenthesis the x-3 affects the placement on the x axis. since is subtracting you move the vertex 3 to the right(because its backwards like that) There is no limit to the x, as it will slowly mom out forever even when its so steep that in reality you dont care, so domain is infinite or all real numbers. the parabola is positive so it moves up forever, but it never goes below its vertex on the x axis. 
Domain=all real numbers
Range= all real numbers>or = 0