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Mathematics

1 answer:

olga nikolaevna [1]3 years ago

6 0

B, since if you plug in all of the numbers from the x side of the table you will get the numbers on the y side of the table

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An isosceles trapezoid has a perimeter of 108 metres. Its shorter base measures 11.5 metres and its longer base measures 28.1 me

kati45 [8]

The length of one of the remaining sides is 34.20 meters.

<h3>What is the length?</h3>

A trapezoid is a convex quadrilateral. A trapezoid has at least on pair of parallel sides. the parallel sides are called bases while the non parallel sides are called legs

Perimeter of an isosceles trapezoid = sum of lengths of sides of a trapezoid

length of shorter base + length of longer base + (2 x legs)

108 = 11.5 + 28.1 + (2 x legs)

108 = 39.60 + (2 x legs)

108 - 39.60 = (2 x legs)

68.40 = (2 x legs)

leg = 68.40 / 2

= 34.20 meters

To learn more about trapezoids, please check: brainly.com/question/25748893

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5 0

2 years ago

A lifeguard fills a pool with water at a constant rate. After 12 hour, 13 of the pool is filled. At this rate, what fraction of

strojnjashka [21]

At the considered rate the fraction of pool that is filled per hour is 13/12

<h3>How to measure the rate of change of something as some other value changes?</h3>

Suppose that we have to measure the rate of change of y as x changes, then we have:

$Rate = \dfrac{y_2 - y_1}{x_2 - x_1}$

where we have

$\rm when \: x=x_1, y = y_1\\when\: x = x_2, y= y_2$

Remember that, we divide by the change in independent variable so that we get some idea of how much the dependent quantity changes as we change the independent quantity by 1 unit.

(5 change per 3 unit can be rewritten as 5/3 change per 1 unit)

For the considered case, we can take time spent as difference of independent variable, and the amount of pools filled as the corresponding difference of the dependent variable.

in 12 hour time interval total 13 pools were filled.

That means

Rate of filling the pool is 13 pools per 12 hours or $\dfrac{13}{12}$ pools per hour.