If we were to foil
after experieence
we know
ax²+bx+c=0
and
in form
(ax+b)(cx+d)=0
if we expand it, we get
acx²+bcx+adx+bd=0
or
(ac)x²+(bc+ad)x+(bd)=0
compare to
ax²+bx+c=0
we notice that the middle terms (x terms) are
b=(bc+ad)
so
in form
(2x-1)(1x+5)
b=bc+ad=(-1*1+2*5)=-1+10=9
b=9
or you could just expand it
Answer:
A
Step-by-step explanation:
A is the only equation that does not account for the fact that Tu bought 2 tickets and 2 drinks.
The rest do: B subtracts the appropriate amounts twice, C multiplies the doubled expenses, and D does the same, just the amount paid is also separated.
Answer:
y = 7x
Step-by-step explanation:
Slope: (7-0)/(1-0) = 7
y-intercept is obviously 0
y = 7x + 0
y = 7x
The coordinate of the point S will be (6,-10).
A coordinate plane is a 2D plane created by the junction of the x-axis and y-axis, two perpendicular lines. A midpoint is a spot that sits in the midst of a line that connects two other places. Given that point T's coordinates are (0,6). The center of ST is (3,-2). The following calculation will yield the coordinate of the point S:-
The x-coordinate is calculated as below:-
(x + 0)/2 = 3
x + 0 = 6
x = 6
The y-coordinate is calculated as below:-
(y + 6)/2 = -2
y + 6 = -4
y = -10
Therefore, the coordinate of the point S will be (6,-10).
Learn more about Coordinate geometry here:
brainly.com/question/18269861
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Answer:
Coupon A is less than B with a difference of $3.95
Step-by-step explanation:
Coupon A: 35% of 97 33.95 and since it is a discount, you take the 35% off the 97 which is 97-33.95=63.05
Coupon B: you have 30 discount, so you just take the 30 off 97, which is 97-30=67
Coupon B has a higher price. to get the difference, you take 63.05 off 67, so 67-63.05=3.95
