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Whitepunk [10]
3 years ago
12

I need help? For precalculus

Mathematics
1 answer:
ikadub [295]3 years ago
3 0
Good luck I’m not sure what else to tell yuh
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a store had 2 blue chairs for $22.78 or 6 red chairs $67.80 which color chair has a lower unit price?
ANEK [815]

Answer:

Red

Step-by-step explanation:

total cost of blue divided by number of blue (22.78/2) is greater than total cost of red divided by number of red (67.80/6).

Blue unit cost: 11.39

Red unit cost: 11.30

6 0
3 years ago
a package of marbles contains 20 blue marbles, 38 red marbles, 48 green marbles, and 16 yellow marbles. which color of marbles c
OLEGan [10]

the answer would be 48 green marbles

Step-by-step explanation:

48/6=8

So, each person would get 8 marbles each

7 0
3 years ago
Solve the equation for the specified variable <br> Y=cd-8, for c
melomori [17]
Y=cd-8
Add 8 to each side giving you
y+8=cd

Divide by d on each side giving you

C=(y+8)/d
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
Zuri made 2 spheres using plaster. The smaller sphere has a radius of 6cm. The larger sphere has a radius of 24cm. Hiw much grea
Dvinal [7]

She used 56972.16 cm^3 plaster :) 
4 0
4 years ago
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