Ok so you round 31 to 30 and 43 to 40 and then you multiply 30 by 40 and get 1200. 1200 is the same thing as 1200.00 bc you can take off the zeros after the decimal and it will be the same. Hope this helped and if your still confused you let me know I'll try to explain it more.
Step-by-step explanation:
6.3%
that is the correct answer
Top:
x / (x + 1) - 1 / x
= [x^2 - (x +1)] / x(x+1)
= (x^2 - x - 1 ) / x (x+1)
Bottom:
x / (x + 1) + 1 / x
= [x^2 + (x +1)] / x(x+1)
= (x^2 + x + 1 ) / x (x+1)
Now you have:
(x^2 - x - 1 ) / x (x+1)
----------------------------
(x^2 + x + 1 ) / x (x+1)
= (x^2 - x - 1 ) / x (x+1) * x (x+1) / (x^2 + x + 1 )
= (x^2 - x - 1 ) /(x^2 + x + 1 )
Answer:
x^2 - x - 1
---------------------
x^2 + x + 1
I’m not sure for the other ones but D is def. likely
If the area of the sector of the circle is 104/9 square inches. Then the radius of the sector of the circle is 4.51 inches.
<h3>What is a circle?</h3>
It is the centre of an equidistant point drawn from the centre. The radius of a circle is the distance between the centre and the circumference.
The sector of a circle has an area of 104 over 9 square inches and a central angle of 65 degrees.
Then the radius of the sector of the circle will be
Area = (x/360) πr²
Then we have
104/9 = (65/360) πr²
r² = 20.37
r = 4.51 inches
If the area of the sector of the circle is 104/9 square inches. Then the radius of the sector of the circle is 4.51 inches.
More about the circle link is given below.
brainly.com/question/11833983
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