MATHS PROBLEM SOLVING

1 answer:

3 0

Very nice Question! Please be careful during each step:

1) First fill 5 liter bucket, and transfer it's water to 3 liter. Fill 3-liter bucket completely from it, so now you have 2 liter water in 5 liter bucket.

2) Now, empty 3 liter bucket, & transfer that 2 liter water from 5 liter bucket to it.
Now, you have an empty 5 liter bucket + 2 liter water in 3 liter bucket.

3) Now, fill 5 liter bucket completely, and fill 3-liter bucket completely, which had 1 liter space empty, so, Now, you have 5 - 1 = 4 liter in 5 liter bucket.

You Got that!! Congrats!! If You 're thirsty by that hard work, then you can drink that water, if it is clean!! :)

Hope this helps!

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Please i need help it’s urgent

777dan777 [17]

Answer:

4.5

Step-by-step explanation:

6x + 42 = 18x - 12 (alternate angles)

or, 18x - 6x = 42+12

or, 12x = 54

or, x = 54/12

x= 4.5

8 0

2 years ago

An environmental science teacher at a high school with a large population of students wanted to estimate the proportion of stude

AnnZ [28]

Answer:

60 students

Step-by-step explanation:

The confidence interval of a proportion is given by:

$p\pm z*\sqrt{\frac{p*(1-p)}{n} }$

Where 'p' is the proportion of students who responded 'yes', 'z' is the z-score for a 95% confidence interval (which is known to be 1.960), and 'n' is the number of students in the sample.

If the confidence interval is from 0.584 to 0.816, then:

$p=\frac{0.584+0.816}{2}=0.7 \\0.816-0.584=2*(1.96*\sqrt{\frac{p*(1-p)}{n}}) \\0.116=1.96*\sqrt{\frac{0.7*(1-0.7)}{n}}\\n=16.8966^2*(0.7*0.3)\\n=60\ students$