Answer:
Step-by-step explanation:
the 3 equation can not be factorised. Because they will result to fraction
Answer:
positive
Step-by-step explanation:
a negative times a negative is always a positive
Answer:
(x + 2)² + (y - 5)² = 7²
Step-by-step explanation:
Incomplete question. I believe you meant, "write the equation of the circle with center at (-2, 5) and radius 7.
That would be:
(x + 2)² + (y - 5)² = 7²
Using Gauss's method
Total number of terms = [15-(-129)]/4+1=36+1=37
Add
S=15+11+7+....-125-129
S=-129-125-...+7+11+15
--------------------------------
2S=-114-114-114...(37 times)
=>
sum=S=(1/2)*(-114)*37=-2109
Using AP, T(n)=15+11+7+....-129
T(n)=19-4n => T(1)=15, T(37)=-129
S(n)=(1/2)(37)(T(1)+T(37)=(1/2)37(15-129)=2109
Answer:
C
Step-by-step explanation:
Midpoint is like average, so 0+20 (the x-coordinates) = 20, then divide it by 2 to get the midpoint.
I hope this helped, and please mark this as brainliest!
