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Novay_Z [31]
3 years ago
15

Select 3 ratios that are equivalent to 8:20​

Mathematics
1 answer:
guapka [62]3 years ago
5 0

Answer:

4:10, 2:5 16:40

Step-by-step explanation:

just multiply or divide

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3/28 of the animals are birds. 4/15 are birds of prey. What fraction of the animals are birds of prey.
vova2212 [387]
Let's call animals "a", and birds "b", birds of prey, "p"

so, b=\frac{3}{28} a

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which is the answer!









7 0
3 years ago
In a random sample of 8 ​people, the mean commute time to work was 33.5 minutes and the standard deviation was 7.2 minutes. A 95
Elina [12.6K]

Answer: Margin of error = 6.58

Confidence interval =  (26.91, 40.08)

Step-by-step explanation:

Since we have given that

Sample size n = 8

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Population standard deviation = 9.5 minutes

At 95% confidence interval,

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Confidence interval would be

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Upper limit:

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Hence, the interval would be (26.91, 40.08)

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3 years ago
The two trigonometric functions defined for all real numbers are the
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Sine and cosine.  The other four functions are periodic and at some values of the input variable would be undefined.
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