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2 years ago

Find the area of each trapezoid or kite

Mathematics

1 answer:

lara31 [8.8K]2 years ago

8 0

9514 1404 393

Answer:

8) 42 in²

9) 33 cm²

10) 112 yd²

Step-by-step explanation:

8) The area is given by the formula ...

A = 1/2(b1 +b2)h

A = (1/2)(9 in +5 in)(6 in) = 42 in²

9) The area is half the product of the lengths of the diagonals.*

A = 1/2(d1)(d2)

A = 1/2(6 cm)(11 cm) = 33 cm²

10) As in the previous problem, ...

A = 1/2(14 yd)(16 yd) = 112 yd²

_____

* This formula works for any quadrilateral with perpendicular diagonals.

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RideAnS [48]

Given :-

A graph is given to us .

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The equation in slope intercept form .

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From the given graph , we can see that the line passes through y axis at (0,5) . So the y intercept is 5 . And the slope of the line is 5/2 = 2.5 . So ,

$\sf\longrightarrow$ y intercept = 5 .

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Hence the required answer is y = 5/2x + 5.

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Step-by-step explanation:

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A water park charges $5 for entry into the park and an additional $2 for each of the big water slides. Steven spent $17 on his v

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A bag contains 40 marbles. The probability of selecting a red marble at random is 1/5. How many red marbles are in the bag?

goblinko [34]

Answer:

8 red marbles.

Step-by-step explanation:

All together we have 40 marbles. The fraction of marbles that are red is 1/5 which means that we should divide the total number of marbles, which is 40 by the denominator ( Bottom number of fraction ) 5 so that we get the number of groups that have 1 red marble in them. In this case we have 8 groups.

40/5=8

You always divide by the denominator ( Bottom number of fraction ) first and then you multiply your answer by the numerator ( Top number of fraction ) .

If each group has 1 red marble in it and we have 8 groups, it means that we have 8 red marbles in the bag.

1 * 8 = 8 red marbles in the bag

If the numerator (number above the fraction line) was more than one, then this would mean that we have more than 1 marble in each group of marbles.

Example:

If we had 3/5 we would have 3 marbles in each group of marbles. This means that instead of doing 1 * 8 we would have to do 3 * 8 = 24. We would have 24 red marbles in the bag.

Easy and quick way if you do not need the explanation:

Another way we could do this is by simply multiplying the fraction ( 1/5 ) by the total number of marbles ( 40 ). This would still give us an answer of 8 red marbles in the bag. 40/5=8, 8*1=8

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Step-by-step explanation:

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