Answer:
ABC = 65
Step-by-step explanation:
The sum of the angles of a quadrilateral are 360
2x-15 + x + 2x-15 +x = 360
Combine like terms
6x -30 = 360
Add 30 to each side
6x -30 +30 = 360+30
6x= 390
Divide by 6
6x/6 = 390/6
x=65
We want angle ABC
ABC = x
ABC = 65
Hello from MrBillDoesMath!
Answer: x = -1, 12
Discussion:
I will assume the problem means to solve for x in
11/(3x) - 1/3 = -4/ (x^2)
Multiply both sides by 3
11/x - 1 = (-4 *3)/ x^2
Multiple both sides by x^2
(11/x) * x^2 - x^2 = ((-12)/ x^2) * x^2 or
11x - x^2 = -12. Rearrange to get
x^2 - 11x - 12 = 0. Factor this equation:
(x-12) (x +1) = 0
so the roots are x = -1, 12
Thank you,
MrB
Answer:
Side Length and Perimeter of One Face
Step-by-step explanation:
See attached image.
Answer:
2
Step-by-step explanation:
you double it making it 4 then subtract a lower number from a higher one making it negative 1
plz mark me brainliest
Had to do a bit of guesswork to figure out what you're asking here. If you're given the 2 angles pi/4 and pi/6, you can find any trig function of either angle.
The sine of pi/4 is 1 / sqrt(2); the cosine is the same.
The cosine of pi/6 is sqrt(3) / 2; the sine of pi/6 is 1/2.
If this isn't quite what you were looking for, try paraphrasing your question to make it clearer.