Lets say original price is x
x-40% of x =130
x=216
Answer:
i don't know..........,......
Answer: 
This is equivalent to 
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Explanation:
To get the first value mentioned above, we simply divide the long leg (10) over the square root of 3.
This is due to the fact that if x is the short leg, then x*sqrt(3) is the long leg. We go in reverse of this process to go from long leg to short leg.
The expression
is the same as
after we multiply top and bottom by sqrt(3) to rationalize the denominator.
Side notes:
- This entire process only applies to 30-60-90 triangles.
- The hypotenuse of a 30-60-90 triangle is twice as long as the short leg, so the hypotenuse is
units long. - You could use the tangent ratio to help isolate x. You would either say tan(30) = x/10 or tan(60) = 10/x as the first equation to set up.
You should place the square root of 5 between 2 and 3.
A square root is the number that get's multiplied by itself to get the given number. In this case, what 2 numbers multiply together to give 5.
It is an irrational number (never ending).
It is about 2.236
Answer:11.25
Step-by-step explanation:
The number 5.25 is increased by one which is 6.25 then you add it by one again you get 7.25 but if you add 2 you get 9.25 so you add 2 to 9.25