The answer is <span>b.12
</span>
According to the Pythagorean theorem the square of the hypotenuse (c) is the sum of the squares of the legs (a and b):
c² = a² + b²
We have:
a = 3x
b = 15
c = 3x + 3
Now, let's replace these parameters:
c² = a² + b²
(3x + 3)² = (3x)² + 15²
(3x)² + 2 * 3x * 3 + 3² = 9x² + 225
9x² + 18x + 9 = 9x² + 225
Rearrange:
9x² - 9x² + 18x = 225 - 9
18x = 216
x = 216 / 18 = 12
Answer:
8+i
Step-by-step explanation:
7+4i+1-3i
Combine like terms.
8+i
I hope this helps!
pls ❤ and give brainliest pls
Answer: no solutions.
Step-by-step explanation:
get x or y by itself (i'm going to use the first equation because x is already by itself it just needs isolated)
x - 6y = -3
x = 6y - 3
now plug in x for x in the equation you didn't use (in my case this is the second one)
-2(6y-3) + 12y = 3
-12y + 6 + 12y = 3
the y's cancel out.
6 = 3
6 does not equal 3 so the answer is no solutions.