If you distribute -4 through (5k-7), it equals -20k + 28. Then put on the other -2k on that side of the equals sign and you should have -22k + 28 = -2(9k+5) Then you need to distribute -2 through (9k+5) which equals -18k - 10. You then should have -22k+28=-18k-10. Add 22k to both sides to cancel it out, then you should have 28=4k-10. Add 10 to both sides to get the 4k by itself, which will be 38=4k, then divide both sides by 4 to get k by itself. 38/4 = 19/2. k = 19/2
General equation of a circle is (x+a)^2 + (y+b)^2 = radius ^2
a and b are the centre and you put in the inverse so as x=-4, a=-4. same for b as the y-coordinate is positive, it becomes negative
the last part is the radius of the circles squared so just 7^2 = 49 !
Answer:
3 roots.
Step-by-step explanation:
f(x) = (x + 1)(x - 3)(x - 4)
If we expand these factors the first term will be x^3, so by the theorem this polynomial has 3 roots.
Answer: 78 inches
Step-by-step explanation: looked it up on google
Answer:
4:10.
Step-by-step explanation:
4:10 would be one.
