The drama club is showing a video of its recent play. the first showing begins at 2: 30 p. m.the second showing is scheduled at 5: 25 p. m with a 1/2 hour break between the showings. how long is the video in hours and minutes
a is the correct answer
sorry im not sure if this is right sorry if i am wrong
sundar multiplied the second equation by -9.
we are given two linear equations and we know that sundar multiplied the first equation by 5 and the second equation by another number to eliminate the y-terms.
we are to find that another number.
2x+9y = 41 (1)
multiplying the first equation by 5 we get:
10x + 45y = 205 (3)
since we have to eliminate the y terms so coefficients of y must be the same but with opposite signs. so we need -45y in the second equation to eliminate it.
for this, we need to multiply the second equation by -9 to get:
-27x - 45y = -324
f(x) = x^2 + 5x - 6
what two number multiply together to give us -6 and add to give us 5
-1 *6 = -6
-1 +6 =5
(x-1) (x+6) = 0
using the zero product property
x-1 =0 x+6 = 0