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marta [7]
2 years ago
11

A pet store contains 35 light green parakeets (14 females and 21 males) and 44 sky blue parakeets (28 females and 16 males). You

randomly choose one of the parakeets. What is the probability that it is a female or a sky blue parakeet?
Mathematics
1 answer:
Mamont248 [21]2 years ago
7 0
You can use this formula <span>P(AorB) = P(A) + P(B) - P(AandB) 

Given:
35 LG (14 F & 21 M)
44 SB (28 F & 16 M)

Req:
- the probability that it is a female (F) or a sky blue (SB)

Sol:
</span>P(F or SB) = P(F) + P(SB) - P(F and SB) 
                 = [(14 F + 28 F)/(35 + 44)] + [(44 SB)/(35 + 44)] - [(28 F)/(35 + 44)]
                 = 53.16 + 55.70 - 35.44
                 = 73.42%

You have to deduct 28 female parakeets from 44 sky blue parakeets because the 28 parakeets are already accounted for in the female parakeets. You can also think of how many ways you can choose a female parakeet and a sky blue parakeet. Add all female parakeets (14 + 28) = 42. Sky blue parakeet equaled to 44. Minus the 28 female parakeets included in the sky blue parakeet to avoid double counting. 42 + 44 - 28 = 58 divided by 79 (35 + 44) total parakeets = 73.42%


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VLD [36.1K]

Answer:

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Step-by-step explanation:

It is required to find the measure of the arc CD in degrees.

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1 year ago
Find the x value 2x=6
sleet_krkn [62]

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x = 3

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2 years ago
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On a coordinate plane, a cube root function goes through (negative 2.5, negative 3.5), crosses the y-axis at (0, negative 3), ha
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Answer:

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Step-by-step explanation:

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iragen [17]

Answer: 2/3

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8/15 ÷ 4/5 can be rewritten as 8/15 × 5/4

Now, we are simply multiplying fractions so we multiply across the numerators and multiply across the denominators.

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Answer:

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The only radical that matches the equivalent answer is the fifth one down. We can easily eliminate the radicals without exponents on the outside, since we know they won't create leftover fractions. So that leaves us with the second, fourth and fifth answers to contemplate.

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Now, for (\sqrt[4]{3}^{7}, we can easiy simplify by changing the 7th root to a fraction in our exponent. Use the rule: \sqrt[n]{x} = x^{\frac{1}{n} }

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