Answer:
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Step-by-step explanation:
Answer: Hey Buddy
Step-by-step explanation:
I hope that you don’t get upset with this website, I am going through the same thing, except its just that nobody is answering my questions, oh btw
Ninja backwards is Ligma
Hamood backwards is Hamood
Answer:
2(x^2+1-2x)+1=
2x2+2-4x+1=
2x2-4x+3
Step-by-step explanation:
Answer:
Move all terms that don't contain
y
to the right side and solve.
y
=
−
4
+
2
x
So we know that surface area is top circle +bottom circle+ (circumfurence times height so) 2(π(radius)^2)+(height(2π(r))) so fill in the blanks
it's kind of hard to see but πr means pi times radius (r)
2πr^2+((4.2)(2)(π)(r))=628.3
factor out the 2 so the equation would mean
2((πr^2)+(4.2πr))=628.3
divide both sides by 2
πr^2+4.2πr=314.15
what's interesting is that the first few digits of pi are 3.1415 so we aproximate pi as 3.14 and divide both sides by 3.1415
r^2+4.2r=100
subtract 100 from both sides
r^2+4.2r-100=0
factor
(x-8.11812)(x+12.3181)=0
so (if xy=0 then x or/and y must be 0 so)we set them to 0 so
x-8.11812=0
x=8.11812
second one
x+12.3181=0
x=-12.3181
since radii (or any legnth) cannot be negative, we can cross this solution out so
radius=8.11812
