1. c
2. b (x=20)
3. a (x=5)
4. d (x=30)
Answer:
x=-2
Step-by-step explanation:
x+6=4
x-6=-6+4
x=-2
Answer:
B.-7.34
Step-by-step explanation:
Because it's a repeating number
Answer:
Step-by-step explanation:
Let the remainder of the diameter is x.
<u>Use the intersecting chords theorem:</u>
- 6*x = (72/2)*(72/2)
- 6x = 1296
- x = 216
<u>The diameter:</u>
- d = 6 + x = 6 + 216 = 222 in
<u>The radius:</u>
Quadratic formula: x equals negative b plus or minus the square root of b squared minus 4 ac all over 2a
a=2 b=5 c=1
x=(-5+/5^2-4(2)(1))/2(2)
-5+/25-8/4
-5+/17/4
(-5+4.12)/4
-0.877/4
-0.219
x=(-5-/5^2-4(2)(1))/2(2)
-5-/25-8/4
-5-/17/4
(-5-4.12)/4
-9.12/4
-2.28
x=-0.219 or x=-2.28
