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nirvana33 [79]
3 years ago
5

Standard form of -12/28

Mathematics
1 answer:
Mama L [17]3 years ago
8 0

Answer:

-3/7

Step-by-step explanation:

To simplify the fraction, simply divide by 4 on both the top and bottom. When you do so, you should get your answer in standard form.

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The table shows the percentage of students in each of three grade levels who list soccer as their favorite sport. Soccer Sophomo
Olegator [25]
The answer should be roughly 35.4%. 

You can obtain this answer by looking at the percentage of each subgrouping. For instance, 33% of the class in juniors and 45% of them list soccer as their favorites. Thus showing that 14.85% of the entire school is made up of juniors that enjoy soccer. 

If you do the totaling for all soccer lovers, you get a total of 41.95% of the school. By dividing the two numbers you get the answer above. 
4 0
3 years ago
A psychologist has designed an index to measure the social perceptiveness of elementary school children. The index is based on r
Zanzabum

Complete Question

A psychologist has designed an index to measure the social perceptiveness of elementary school children. The index is based on ratings of a child's responses to questions about a set of photographs showing different social situations. A random sample of 16 elementary school children was chosen, and their index measurements were recorded. Assume that the index measure in the population is normally distributed. The 95% confidence interval created from this data is (56.29, 65.09). This interval indicates:__________.Choose one or more:

a. The average index of elementary school children must be 60.69.

b. The standard deviation of the sample is about 10% smaller than the population standard deviation.

c. That if we take many samples from this population 95% of them will have a sample mean between 56.29 and 65.09.

d. 95% of all elementary school children in this district have indices between 56.29 and 65.09.

e. 4.40 is 95% of the true average of the index for all elementary school children.

f. We are 95% confident that the average index for all elementary school children is between 56.29 and 65.09.

Answer:

The correct option is  a and  f

Step-by-step explanation:

From the question we are told that

    The sample size is  n =  16

     The 95% confidence interval is  (56.29, 65.09)

Generally the sample mean(average index of elementary school children) is mathematically represented as

     \= x  =  \frac{65.09 + 56.29}{2}

=>  \= x  =  60.69

 

5 0
4 years ago
I need to simplify<br><br>3 + 4 10 -8<br><br>and<br><br>(3+4)(10-8)
myrzilka [38]

Answer: 14

Step-by-step explanation: (3+8)*(10-8) = 14

5 0
2 years ago
Read 2 more answers
The radius of a circular place mat is 7 inch. what is the length of its diameter?
irakobra [83]

Answer:

14 inches

Step-by-step explanation:

4 0
3 years ago
(5.8 × 105)(6.4 × 102)
Snowcat [4.5K]
Hi well you didn’t tell me weather your adding them, subtracting, dividing, or multiplying. So here is the answer for all 4 of them. Adding them you get 1261.8, subtracting then you get -43.8, multiplying them you get 397555.2, and dividing them you get 1015/1088. If you just need the answer for each one (5.8x105) is 609 and (6.4x102) is 652.8. Hopefully I helped in some type of way. Have a good night :)
6 0
3 years ago
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