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Fiesta28 [93]
3 years ago
7

How do you find sin 30 of a unit circle?

Mathematics
1 answer:
Gwar [14]3 years ago
5 0
Go to where 30 degrees is on the unit circle and find the y-coordinate. That is sin30.
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The number 71 falls between the perfect squares ______
Viktor [21]
The number 71 falls between the perfect squares of:
8 squared= 64 and 9 squared = 81
8 0
3 years ago
A peony plant with red petals was crossed with another plant having streaky petals. A geneticist states that 75% of the offsprin
Strike441 [17]

Answer:

The sample data confirm the geneticist's prediction that 75% of the offspring from this cross will have red flowers.

Step-by-step explanation:

A Chi-square goodness of fit test can be used to test the claim made by the geneticist.

The hypothesis is defined as:

<em>H₀</em>: There is no difference between the observed and expected value,i.e. <em>p</em>₁ < 0.75.

<em>Hₐ</em>: There is a significant difference between the observed and expected value, i.e. <em>p</em>₁ > 0.75.

The test statistic is:

\chi^{2}=\sum \frac{(O-E)^{2}}{E}

Consider the tables attached below.

The value of the test statistic is:

\chi^{2}=\sum \frac{(O-E)^{2}}{E}=25.8133

The critical value is:

\chi^{2}_{\alpha, k-1}=\chi^{2}_{0.01, 1}=6.635

*Use a Chi-square table.

The critical region is:

\chi^{2}\geq 6.635

The test statistic value of 25.8133 lies in the critical region.

The null hypothesis is rejected at 1% level of significance.

<u>Conclusion</u>:

As the null hypothesis is rejected it can be concluded that 75% of the offspring from this cross will have red flowers.

7 0
3 years ago
Can someone help me.me and my friends are at a loss
Ganezh [65]
From the number given is appears the rule is y = 2x + 1
This works for all three:
17 = 2(8) + 1
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6 0
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How do I find the answer to the second question?
dimaraw [331]
The sentence does not make sense because a test can only be 100% not 200

7 0
4 years ago
What does x equal in the equation x-12+5x=24
Bess [88]

Answer:

2

Step-by-step explanation:

6 0
3 years ago
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