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-BARSIC- [3]
3 years ago
13

Use the spinner to identify the probability to the nearest hundredth of the pointer landing on a non-shaded area. PLEASE HELP AS

AP!! The answer with the red arrow is incorrect!

Mathematics
1 answer:
Elan Coil [88]3 years ago
7 0

The whole circle is 360° and the unknown non-shaded area can be found by subtracting 360 - 64 - 48 (shaded areas) - 165 (known non-shaded area) which is 83°. The non-shaded area is 83° + 165°, or 248°.

To find the probability of landing on a non-shaded area, divide 248 / 360; that is equal to 0.688 repeating so the answer is B) 0.69

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Answer:

2 real solutions

Step-by-step explanation:

Remember this messy thing?

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The <em>quadratic formula</em>, as it's called, gives us the roots to any quadratic equation in standard form (ax² + bx + c = 0). The information on the <em>type</em> of roots is contained entirely in that bit under the square root symbol (b² - 4ac), called the <em>discriminant</em>. If it's non-negative, we'll have <em>real</em> roots, if it's negative, we'll have <em>complex roots</em>.

For our equation, we have a discrimant of (-3)² - 4(6)(-4) = 9 + 96 = 105, which is non-negative, so we'll have real solutions, and since quadratics are degree 2, we'll have exactly 2 real solutions.

4 0
3 years ago
Please help!
Tcecarenko [31]

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2. -8

Hope it helps, if you need it in fractions, you can always convert it :)


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