Answer:
#1 x = 31°
#2 x = 125°
Step by Step Explanation:
#1
- By the theorem of intersecting secants outside of the circle, we have:
#2
- By the theorem of intersecting chords, we have:
9w - 7 = 5
9w= 5+7
9w=12
w= 4/3 or 1.33
Answer: When the quadratic equation can be factored or solved by completing the square, you do not need to use the quadratic formula
Step-by-step explanation: In the form ax² + bx + c
Whenever <em><u>a</u></em> is 1 (implied, no coefficient of x²) and the constant, <u><em>c</em></u>, is a multiple of numbers whose sum or difference is equal to <u><em>b</em></u>, factoring is much quicker and easier than using the quadratic formula.
Even when there is a coefficient of x², there are procedures to find the factors and solve for x without resorting to the quadratic formula.
2x +4 (0)=12.4
2x=12.4
x=6.2
2(0) +4y=12.4
4y=12.4
y=3.1
63 = 1 x 63
63 = 3 x 21
63 = 7 x 9
Hope that helps
Those are a few different ways for the answer
