The answer is: [D]: " C = 2 π r " .
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If xy=0 then assume taht x and/or y=0
remember differnce of 2 perfect squares
a^2-b^2=(a-b)(a+b)
factor
6x^2-24=0
6(x^2-4)=0
6(x^2-2^2)=0
6(x-2)(x+2)=0
set to zero
x-2=0
x=2
x+2=0
x=-2
x=2 and -2
A is answer
X+3-2x+5=10
+2x +2x
3x+ 3 + 5 = 10
-3 -3
3x + 5 = 7
-5 -5
3x=2
x=1.5
I hope all is well, and I helped! (: Good luck, rockstar!
Answer:
In 286 different ways 10 players can be selected.
Step-by-step explanation:
There are 6 girls and 7 boys in a class. So in total there are 6+7 = 13 number of students in the class.
A team of 10 players is to be selected from the class.
As there is no other conditions are given, we can pick any 10 students from 13 students.
The way we can select 10 players from 13 students is;
= (13 10)
= 13!/10!(13-10)!
= 13!/10! 3!
= (13 × 12 × 11 × 10!)/ 10! 3!
= ( 13 × 12 × 11)/6
= 286
If you multiply 5 by 6 you get 30. If you multiply 10 by 4 you get forty.
If you divide 30 by 10 you get 3. If you divide 40 by ten you get 4.
If you divide 30 by 2 you get 15. If you divide 40 by 2 you get 20.
Answers: C,E, and F.
