1. 1st number be x, 2nd number be y
Adding 5 times the first number and 8 times the second number gives a total of -13
so 5x+8y=-13
Adding 5 times the first number and 10 times the second number gives -15
so 5x+10y=-15
subtracting the above two eqns
(5x+8y)-(5x+10y) = -13-(-15)
-2y=2
y=-1
put back in first eqn 5x+8(-1)=-13
5x=-5
x=-1
2. area of town A = 1500
every year, the area of the town decreases by 7%
so after 1 year, A=1500*(1-7%)=1500*(0.93)
after x years, A=1500(0.93)^x
Answer:
0.0036
Step-by-step explanation:
Given that :
Proportion of population that are math phobic = 6% = 6/100 = 0.06
P(math phobic) = 0.06
If two selections are made ; probability that both are math phobic ;
P1 = selection 1 = 0.06
P2 = selection 2 = 0.06
Probability that both are math phobic :
P1 * P2 = (0.06 * 0.06) = 0.0036
A parabola is an
open curve that is formed when a cone is sliced parallel to the side of it. The
key aspects of a parabola when it is graphed looks like a curve that opens
upward, downward, leftward or rightward. It has a latus rectum which is the
length of the ends of a curved line. The directrix is the distance between the
vertex of a parabola and the line. The vertex is the point where the curve
ends.
The way you wrote them was right
Answer:
I would guess $99.11
Step-by-step explanation:
Take $110 and multiply by 15% or 0.15 and you get 16.5
Subtract it: 110-16.5=93.5
Take 93.5 and multiply by the sales tax: 93.5*0.06=5.61
$5.61 is the sales tax, and add that to $93.50, getting $99.11.