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gogolik [260]
2 years ago
10

School started at 9:15am. After two period lasting 50min each, children had a break. At what time was the break?

Mathematics
2 answers:
pogonyaev2 years ago
6 0

Answer:

10:55

Step-by-step explanation:

9:15/10:05/10:55

Reptile [31]2 years ago
4 0

Answer:

10:55 AM

Step-by-step explanation:

50 minutes + 50 minutes = 100 minutes

9:15 am + 100 minutes = 10:55 AM

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Factor the trinomial 15a^2-22ab-5b^2
Varvara68 [4.7K]
15a² - 22ab - 5b²
15a² - 25ab + 3ab - 5b²
5a(3a) - 5a(5b) + b(3a) - b(5b)
5a(3a - 5b) + b(3a - 5b)
(5a + b)(3a - 5b)
7 0
3 years ago
In a random sample of 2500 sports fans, 61% prefer basketball over soccer.
timama [110]

The margin of error is a statistic that expresses how much random sampling error there is in a survey's results. The Margin of error in this survey is 1%.

<h3>What is the margin of error?</h3>

The margin of error is a statistic that expresses how much random sampling error there is in a survey's results. The wider the margin of error, the less confident one should be that a poll result reflects the outcome of a population-wide survey.

The random sample of 2500 sports fans, out of which 61% prefer basketball over soccer, therefore, we can write n=2500 and p=0.61. Thus, the margin of error can be written as,

MOE=\sqrt{\dfrac{\hat p(1-\hat p)}{n}} = \sqrt{\dfrac{0.61(1-0.61)}{2500}} = 0.00975 = 0.975\% \approx 1\%

Hence, the Margin of error in this survey is 1%.

Learn more about Margin of Error:

brainly.com/question/13990500

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7 0
2 years ago
A Park has a pond shaped like a quadrilateral with all sides 18 feet long and at least one right angle. What geometric shape bes
Rom4ik [11]
I gave some examples of some quadrilaterals. The pond is most likely the shape of a square or a triangle with a right angle.

5 0
3 years ago
Can someone help me please
miss Akunina [59]
15 is A, 22+X=8
I don't have time to solve the rest RN but will come back later
3 0
3 years ago
Read 2 more answers
Someone should help me out please​
Maurinko [17]

Answer:

18 in

Step-by-step explanation:

First you would multiply 2·5=10 then for the area of the bottom shape you already have 4 for one side to get the other side you subtract 7-5 and get 2 so 4·2=8 so then add the areas of both shapes and get 18

4 0
3 years ago
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