We want to solve

Subtract 2/(2x+1) from each side.

Add 1/4 to each side, and simplify the left side.

Cross multiply.
4(x - 2) = 1(2x + 1)
4x - 8 = 2x + 1
Simplify and solve for x.
4x - 2x = 1 + 8
2x = 9
x = 9/2 or x = 4 1/2.
Answer:
7x+5+8x
combine 7x and 8x to get 15x+5
m = 7.5x+2.5 would be the exact middle, but without knowing x I can't help much more. My school's work usually tells me x.
Answer: 18
Step-by-step explanation: The radius is always half of the diameter, so 36 divided by 2 is 18.
With
a standard deviation of 6 minutes, we will test the hypothesis that σ = 6
against the alternative that σ < 6 if a random sample of the test
times of 20 high school seniors has a standard deviation s = 4.51. use a
0.05 level of significance.
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Answer:

Step-by-step explanation:
Given

Required
Standard form

Apply the following law of indices

So, we have:

Express
as 

Using a calculator, we have:
