It rounds to 50 because the back number is below the 5
Answer:560
Step-by-step explanation:
Let a be the number of students the school have last year
135% of a=756
135/100 x a=756
135a/100=756
Cross multiplying we get
135a=756 x100
135a=75600
Divide both sides by 135
135a/135=75600/135
a=560
The magnitude of YZ is 8.6
<u>Explanation:</u>
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Y( -4, 12)
Z ( 1, 19)
Magnitude of YZ = ?
We know:
![YZ = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}](https://tex.z-dn.net/?f=YZ%20%3D%20%5Csqrt%7B%28x_2-x_1%29%5E2%2B%28y_2-y_1%29%5E2%7D)
On substituting the value we get:
![YZ = \sqrt{(1+4)^2 + (19 - 12)^2} \\\\YZ = \sqrt{(5)^2 + (7)^2} \\\\YZ = \sqrt{25+49} \\\\YZ = \sqrt{74} \\\\YZ = 8.6](https://tex.z-dn.net/?f=YZ%20%3D%20%5Csqrt%7B%281%2B4%29%5E2%20%2B%20%2819%20-%2012%29%5E2%7D%20%5C%5C%5C%5CYZ%20%3D%20%5Csqrt%7B%285%29%5E2%20%2B%20%287%29%5E2%7D%20%5C%5C%5C%5CYZ%20%3D%20%5Csqrt%7B25%2B49%7D%20%5C%5C%5C%5CYZ%20%3D%20%5Csqrt%7B74%7D%20%5C%5C%5C%5CYZ%20%3D%208.6)
Thus, the magnitude of YZ is 8.6
REAL BUT NOT RATIONAL :
square root of 2
the golden ratio : 1.618033.....non terminating
square root of 99