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anyanavicka [17]
2 years ago
10

2 1/3 plus 1 3/4 plz exlain and answer need to be in fraction form

Mathematics
1 answer:
NARA [144]2 years ago
8 0

Answer:

7/12

Step-by-step explanation:

2 1/3 + 1 3/4

7/3 + 7/4

28-21/12

7/12

:)ur wel

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A superintendent of a school district conducted a survey to find out the level of job satisfaction among teachers. Out of 53 tea
frez [133]

Answer:

b. 1.15

Step-by-step explanation:

The z statistics is given by:

Z = \frac{X - p}{s}

In which X is the found proportion, p is the expected proportion, and s, which is the standard error is s = \sqrt{\frac{p(1-p)}{n}}

Out of 53 teachers who replied to the survey, 13 claim they are satisfied with their job.

This means that X = \frac{13}{53} = 0.2453

She find that the proportion of satisfied teachers nationally is 18.4%.

This means that p = 0.184

Standard error:

p = 0.184, n = 53.

So

s = \sqrt{\frac{0.184*0.816}{53}} = 0.0532

Z-statistic:

Z = \frac{X - p}{s}

Z = \frac{0.2453 - 0.184}{0.0532}

Z = 1.15

The correct answer is:

b. 1.15

5 0
3 years ago
Somebody please help me with this.
LenKa [72]

Answer:

D.

Step-by-step explanation:

8 0
2 years ago
A 10-ounce box of cereal cost $3. A 20-ounce box of the same cereal cost $5. A third box of the same cereal costs $8.
kvasek [131]

The number of ounces of cereal in the third box is 32.

<u>Explanation:</u>

Given-

10 oy box = $3

Price of 1 ounce box = $3/10

                                  = $0.3

20 oy box = $5

Price of 1 oy box = $5/20

                            = $0.25

Therefore, it is beneficial to buy a 20 oy box as it is comparatively cheaper than the 10 oy box.

Third box of cereal = $8

$5 is the price of 20 oy box

$8 will be the price of x oy box

So,

x = \frac{20}{5} X 8\\ \\x = 32

Therefore, the number of ounces of cereal in the third box is 32.

3 0
3 years ago
3,15,75,375 9th term
e-lub [12.9K]

Answer:

1,171,875

Step-by-step explanation:

The sequence is multiplying by 5 every time. It will be 3, 15, 75, 375, 1875, 9375, 46,875, 234,375, and then 1,171,875

5 0
3 years ago
Involves triangle centroid
Rasek [7]
Here, you do the same as the previous one, keeping in mind that X cuts TW in a 2:1 ratio.

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6 0
3 years ago
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