Answer:
x = 0,3
Step-by-step explanation:
y-10x=5 move -10x to the other side to get y by itself
y=10x+5 then you would substitute this equation into the other equation where you see y
10x+5=x^2+7x+5 move everything to one side
0=x^2+7x+5-10x-5 combine like terms
0=x^2-3x factor
0 = x(x-3) set each equal to zero
x=0
x-3 = 0 add 3 to both sides
x = 3
the answer is x=0 and x=3
Notice the picture below
so.... the angle of depression, is above in dashed lines.... however, the angle of depression, is identical to the angle of elevation from the water, since, both angles are "alternate interior" angles
now, using the 45-45-90 rule, then we know the swimmer is 90 feet from the lighthouse, then just use the tangent ratio to get "x"
Ok so you divide them and then make sure that 1 is the denominator and the numerator can be anything else
Probability is measured by the ratio of the favorable cases to the total number of possible cases.
the odds of winning the raffle are 1:7=1/7≈14.28%
the probability of winning a carnival game is 0.2=20%
so the carnival game gives you a better chance of winning
<span>B)The mean and the median become equal.hope this helps</span>