Answer:
No real solutions.
Step-by-step explanation:


I'm going to subtract the second expression for y and plug it into the first equation.
So solving x=y+8 for y by subtracting 8 on both sides gives us y=x-8.
I'm going to insert this for the first y like so:

Now I'm going to move everything to one side.
I'm going to subtract x on both sides and add 8 on both sides.

Simplifying:

Now our job since the coefficient of x^2 is 1 is to find two numbers that multiply to be 4 and at the same time add up to be -3. I can't think of any such numbers.
Let's check the discriminant.
Compare
to
.
So
.
The discriminant is
.
So plugging in our numbers we get
.
Time to simplify:



So since the discriminant is negative, then the solutions will not be real.
Maybe that would be 200×3 if that helps you at all.
Answer:
3 years
Step-by-step explanation:
Note that:
P(0) = 803
So Tripling time ==> P(t) = 3*P(0) = 3*803 = 2409
Then we have an equation:
2409 = 803*
<=> 3 =
<=> 1 =
<=> t =
So the tripling time for this population of alligators is 3 years
The answer is a number that can be written as a ratio of two integers. The answer is C.
Answer:x = 55
Explanation:In a parallelogram, the sum of each two consecutive angles is 180°.
In the given parallelogram ABCD, we can note that angles A and B are consecutive angles. This means that their summation is 180°
Therefore:
∠A + ∠B = 180
2x + 15 + x = 180
3x + 15 = 180
3x = 180 - 15
3x = 165
x = 165 / 3
x = 55
Now we can check:
angle A = 2(55) + 15 = 125°
angle B = 55°
angle A + angle B = 125 + 55 = 180°
Hope this helps :)