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3 years ago

2. The area of a trapezium is 1080

Mathematics

2 answers:

MrRa [10]3 years ago

8 0

Step-by-step explanation:

area = a+b/2×h

1080=55.6+34.4/2×h

1080×2=55.6+34.4h

2160=90h

h=2160/90

h=24

mezya [45]3 years ago

6 0

Answer:

Therefore, the distance (height) is 24cm.

Brainliest plzzzzz

Step-by-step explanation:

Area of trapezium = 1/2 × (a+b) × h

*a and b are the parallel lengths

Now we are going to find the distance, which is height (also known as 'h').

First, substitute the given values into the equation.

1080 = 1/2 × (55.6 + 34.4) × h

Move the 1/2 over to 1080 and divide.

1080 ÷ 1/2 = (55.6 + 34.4) × h

2160 = (55.6 + 34.4) × h

Add the numbers in the brackets.

2160 = 90 × h

Move 90 over to 2160 and divide.

2160 ÷ 90 = h

24 = h

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Answer:
8 5/7
Step-by-step explanation:
278/7 = 39 5/7
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The probability of a certain brand of battery going dead within 15 hours is. Noah has atoy that requires 4 of these batteries. H

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Question:

The probability of a certain brand of battery going dead within 15 hours is 1/3. Noah has a toy that requires 4 of these batteries. He wants to estimate the probability that at least one battery will die before 15 hours are up.1.Noah will simulate the situation by putting marbles in a bag. Drawing one marble from the bag will represent the outcome of one of the batteries in the toy after 15 hours. Red marbles represent a battery that dies before 15 hours are up, and green marbles represent a battery that lasts longer.How many marbles of each color should he put in the bag? Explain your reasoning.

Answer:

The number of marbles of each color that should be present in the bag is;

1 red marble and 2 green marbles

Step-by-step explanation:

Here, we note that the probability of a battery going dead = 1/3 and the

Therefore if the red marbles represent that a battery dies before 15 hours then the probability of picking the red marble should be 1/3. That is if there is only one red marble in the bag, the probability of picking the red will be 1/3 when there are other 2 green batteries in the bag

That is there should be 1 red marble and 2 green marble in the bag.

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3 years ago

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3 years ago

Please help, image is attached! Thanks.

Mkey [24]

When something is bisected, it is cut into two equal halves.

We know that SV cut RST into two parts.

Those two parts are RSV and VST

RSV = 64 and VST = 64

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3 years ago

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Two cars enter the Delaware turnpike at shoreline drive at 8 am, each heading for ocean city. One cars average speed is 10 mph f

lana [24]

Average speed of slower car = 60 mph

Average speed of faster car = 70 mph

Solution:

Given that Two cars enter the Delaware turnpike at shoreline drive at 8 am, each heading for ocean city

Given that One cars average speed is 10 mph faster than the other

Let "x" be the average speed of slower car

Then x + 10 is the average speed of faster car

The faster car arrives at ocean city at 11 am, a half hour before the slower car

Time taken by faster car:

The faster car arrives at ocean city at 11 am but given that they start at 8 a.m

So time taken by faster car = 11 am - 8am = 3 hours

Time taken by slower car:

The faster car arrives at ocean city at 11 am, a half hour before the slower car

So slower car takes half an hour more than faster car

Time taken by slower car = 3 hour + half an hour = $3\frac{1}{2} \text{ hour}$

Now the distance between Delaware turnpike at shoreline drive and ocean city will be same for both cars

Let us equate the distance and find value of "x"

The distance is given by formula:

$distance = speed \times time$

Distance covered by faster car:

$distance = (x + 10) \times 3 = 3x + 30$

Distance covered by slower car:

$distance = x \times 3\frac{1}{2} = x \times \frac{7}{2} = 3.5x$

Equating both the distance,

3x + 30 = 3.5x

3x - 3.5x = -30

-0.5x = -30

x = 60

Thus average speed of slower car = 60 mph

Average speed of faster car = x + 10 = 60 + 10 = 70 mph

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3 years ago