Answer:
below
Step-by-step explanation:
-3x² + 6x + 6 = 0
x = (-b±√(b²-4ac))/2a
x = (-6±√(36 - 4(-3)(6)))/2(-3)
x = (-6±√108)/-6
x = 1 ± √3
The negative solution is not reasonable for he threw it forwards
Answer:
x= 29
Step-by-step explanation:
use Pythagoras because it has a right angle and 2 sides length is given.
when the hypoteneus(side opposite the right angle) is the value you are finding out you use the equation : x²+y²=hypoteneus² (Pythagoras)
then you sub in the values you are given
(21)² + (20)² = hypoteneus²
them take the square root (²) to the opposite side to find the hypoteneus
square root (441+400) = hypoteneus
now you can put into a calculator and you get the value
hypoteneus =29 (for reference to hypoteneus is the same as X-the value you are looking for)
therefore, x=29
for extra reference, say you want to work out a side that is not the hypotenues you use the formula ,
(side u looking for)² = (hypotenues)² - (other side given)²
Answer:
y = 3x + 1
The ? is 3
Enter the numbers into the equation:
Enter (0,1) --> 1 = 0 + 1 --> 1 = 1
Enter (3,10) --> 10 = 3 · 3 + 1 --> 10 = 9 + 1 --> 10 = 10
