4.5 / 2 = 2.25cm radius for the smaller circle
3.14 (pi) × 2.25² = 15.89625cm²
10.5 / 2 = 5.25cm radius for the larger circle
3.14 × 5.25² = 86.54625cm²
86.54625 - 15.89625 = <span>70.65cm</span>²
The answer is 70.7cm².
Answer:
Step-by-step explanation:
24x=48
x=2
Answer:
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Step-by-step explanation:
thanks for the points
Answer:
3/4
Step-by-step explanation:
tan C = opp/adj
For angle C, the opposite leg is 6, and the adjacent leg is 8.
tan C = 6/8 = 3/4
Answer: 3/4
the solutions to a general quadratic equation is
X=-b±√b²-4ac/2a ,, When ax²+bx+c=0
the discriminant is the expression under the radical b²−4ac
Part A:
discriminant is (-16)² - 4(9)(60) = -1904
there are two complex solutions
Part B:
4x² + 8x − 5 = 0
4x² + 10x -2x - 5=0
2x ( 2x + 5) - 1(2 x + 5) =0
(2x + 5)(2x-1) = 0
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/ \
2x+5 = 0 2x-1 =0
x = -5/2 x = 1/2
