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ad-work [718]
3 years ago
12

Can anyone help me with my math test!! I gotta have it turned in by midnight tonight so i need answers asap!! Heres another ques

tion on it!!

Mathematics
2 answers:
alexdok [17]3 years ago
5 0

Answer:

1 and 1/2 hours

Step-by-step explanation:

because half of 3 is 1.5 and 1.5 as a fraction is 1 and 1/2

antoniya [11.8K]3 years ago
5 0
The answer should be D. 1 1/2 hours
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Given h(x) = 3x + 4, find h(-1).
larisa86 [58]
Plug in -1 for x
h(-1) = 3(-1) + 4
h(-1) = -3 + 4
Solution: h(-1) = 1
6 0
2 years ago
Jackie can clean a house in 6 hours. When Jackie and Veronica work together, they can clean a house in about
Digiron [165]

Answer:

5.4 hr i think

Step-by-step explanation:

3 0
3 years ago
A randomized controlled study was designed to test whether regular drinking of cranberry juice can prevent the recurrence of uri
Kamila [148]

Answer:

1. The chi-squared statistic = 10.36

The degrees of freedom = 17

The p-value for the test = 0.89

2. The range of the p-value from the Chi squared table = 0.75 < p-value < 0.90

Step-by-step explanation:

1. The Chi squared test is given as follows;

\chi ^{2} = \sum \dfrac{\left (Observed - Expected  \right )^{2}}{Expected  }

Therefore,

                              UTI   No UTI    %     Total

Cranberry juice       8           42      84     50

Lactobacillus          19          30       61     49

Control                    18          30      60    50

The chi-squared statistic is given as follows;

\chi ^{2} = \dfrac{\left (8- 18\right )^{2}}{18} +  \dfrac{\left (42 - 30\right )^{2}}{30} = 10.36

The chi-squared statistic = 10.36

The degrees of freedom, df = 18 - 1 = 17 since the all of the expected count have a minimum value of 18

With the aid of the calculator we find the p value as p as follows;

p = 0.9 - \dfrac{10.36 - 10.085}{12.972 - 10.085} \times (0.9 - 0.75)

The p-value for the test = 0.89  

2. The range of the p-value from the Chi squared table is given as follows;

0.75 < p-value < 0.90.

5 0
3 years ago
What numbers come next? 11, 14,17,20 A 24,28,32 B 23, 26,29 C 23, 27, 31 D25,30,35
ArbitrLikvidat [17]

Answer:

B

Step-by-step explanation:

The answer is B (23, 26, 29) because you are adding 3 after each step.

Hopes this helps.

4 0
3 years ago
Which of the following equations represents a proportional relationship?
IceJOKER [234]

Answer:

a

Step-by-step explanation:

y=3x

thus, a proportional relationship equation is y=kx .Where k is constant

8 0
3 years ago
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