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Yakvenalex [24]
3 years ago
5

Helpppp me please !!!!!!!!!!!!!!

Mathematics
1 answer:
baherus [9]3 years ago
5 0

Answer:

\frac{-1}{6}x^{3} + - \frac{1}{2}x^{2}

Step-by-step explanation:

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at twice the father's rate of speed. At this rate; how many miles would the bicycle rider travel in 9 hours?

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at twice the father's rate of speed. At this rate; how many miles would the bicycle rider travel in 9 hours?

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Graph the line: Y=-4x+1
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Shown in graph.

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3 years ago
1. A flower shop wishes to add the valuable Waimea orchid to its product list. They purchase a large shipment of bulbs from a su
AysviL [449]

Answer:

The concern of the florist that these bulbs are not Waimea orchids, but a similar appearing hybrid maybe true.

Step-by-step explanation:

A Chi-square goodness of fit test can be used to perform the hypothesis test.

The hypothesis is defined as:

<em>H</em>₀: There is no difference between the observed and expected value.

<em>Hₐ</em>: There is a difference between the observed and expected value.

The test statistic is:

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

The total number of Waimea orchid bulbs is, 60.

7x + 5x + 4x + 4x = 60

20x = 60

x = 3

The expected number of Waimea orchid bulbs are:

Blue = 7 × 3 = 21

Red = 5 × 3 = 15

Violet = 4 × 3 = 12

Orange = 4 × 3 = 12

Consider the table provided.

The test statistic value is:

\chi^{2}=\sum \frac{(O-E)^{2}}{E}=14.981

The decision rule:

The null hypothesis will be rejected if \chi^{2}\geq \chi^{2}_{\alpha, (k-1)}.

Compute the critical value as follows:

\chi^{2}_{0.05, (4-1)}= \chi^{2}_{0.05, (3)}=7.815

The test statistic value is 14.981.

\chi^{2}=14.981> \chi^{2}_{\alpha, (k-1)}=7.815

The null hypothesis will be rejected at 5% level of significance.

Conclusion:

As the null hypothesis was rejected it implies that there is a significant difference between the observed and expected value.

Thus, the concern of the florist that these bulbs are not Waimea orchids, but a similar appearing hybrid maybe true.

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4 years ago
Help! 144/360 reduced using prime factorization
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Divdie by 12
12/30
6/15
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3 years ago
Tom and Jerry buy a pool that has a radius of 14 feet. What is the diameter<br> of the pool?
UkoKoshka [18]

Answer: 28 feet

Step-by-step explanation:

Diameter is radius times 2.

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