Answer:
see explanation
Step-by-step explanation:
Let u = x² ( choice of variable is flexible ), then
4u² - 21u + 20 = 0 ← expressed as a quadratic
This can now be solved for u and converted back into terms of x
Answer:
5 + 52.25x
Step-by-step explanation:
flat rate plus cost per pound times number of pounds
5 + 52.25x
Is this algebra one or two please mark me brainlist I need 1 more
The correct answer to this question is this one:
Regular triangle with :
bearing from the western station = 90° - 40° = 50°
bearing from the eastern station.= 90° + 22° = 112°
-> the third angle : 18°
Thus the distance from balloon to the western station:
x/ sin112 = 165 / sin 18
Answer:
(7c + 5d)²
Step-by-step explanation:
In order to factor a quadratic equation, we need to look at the coefficients of all the terms. In this case the following quadratic:
49c² + 70cd + 25d², has an 'a' = 49, 'b' = 70 and 'c' = 25.
When we take the √49 = 7 and the √25 = 5, we can see that when we multiply 7 x 5 = 35 and 35 + 35 = 70, so we know that our two equations will be the same: (7c + 5d)
Using the FOIL (forward, outside, inside, last) method, we can check our answer:
(7c + 5d)(7c + 5d) = 49c² + 35cd + 35cd + 25d² or 49c² + 70cd + 25d²