Answer:

Step-by-step explanation:
<u>Step 1: Find the square root</u>
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Answer: 
If there are 8 groups of 65 students, that means they can seat 8*65 students total. 520 students
Answer:
Step-by-step explanation:
1. EG=tangent line
2.EN=radius
3. ER=chord
4. IR=diameter
5.IW=secant line
6. Point E=point of tangency
7.IEW=Major arc
8. IE=minor arc
9.IER=semi-circle
10. Point N=center of a circle.
Answer:
2
Step-by-step explanation:
The range of class A is 5-0 = 5
The range of class B is 3-0 = 3
the difference between 3 and 5 is 2.
Answer:x=6
Step-by-step explanation:Step-1 : Multiply the coefficient of the first term by the constant 1 • 18 = 18
Step-2 : Find two factors of 18 whose sum equals the coefficient of the middle term, which is -9 .
-18 + -1 = -19
-9 + -2 = -11
-6 + -3 = -9 That's it
Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above, -6 and -3
x2 - 6x - 3x - 18
Step-4 : Add up the first 2 terms, pulling out like factors :
x • (x-6)
Add up the last 2 terms, pulling out common factors :
3 • (x-6)
Step-5 : Add up the four terms of step 4 :
(x-3) • (x-6)
Which is the desired factorization