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kap26 [50]
3 years ago
9

Please answer ASAP!!

Mathematics
1 answer:
belka [17]3 years ago
4 0

Answer:

3. It is likely.

Step-by-step explanation:

Let's assume the dartboards circles have radius of r, 2r, 3r and 4r from inner side

<u>Then the areas covered will be as:</u>

  • point 20 = πr² = S
  • point 15 = π(2r)² - πr² = 3πr² = 3S
  • point 1 0 = π(3r)² - π(2r)² = 5πr² = 5S
  • point 5 = π(4r)² - π(3r)² = 7πr² = 7S

Total area of the dartboard is S+3S+5S+7S = 16S

The area of point 5 is 7S. And the area of non- 5 point is 16S - 7S = 9S

The probability of scoring at least 10 points is:

  • 9S/16S = 0.5625

As it is between 1/2 and 1, the probability is in 'likely' region

<u>So the correct answer choice is:</u> 3. It is likely

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What is the area of the figure if x = 25 cm and y=20 cm?<br> Use 3.14 to approximate it.
Akimi4 [234]

The area of the circle is 6,358.5cm²

<h3>Area of the circle</h3>

The formula for calculating the area of a circle is expressed as;

  • A = πr²

r is the radius = x + y

r = 25 + 20 = 45cm

Substitute the given parameters into the formula to have:

A = 3.14(45)²

A = 6,358.5cm²

Hence the area of the circle is 6,358.5cm²

Learn more on area of a circle here; brainly.com/question/10645610

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2 years ago
I got a bunch of questions under my account if someone just wants to do some work
Sliva [168]

Answer:

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Step-by-step explanation:

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8 0
3 years ago
A rectangular room is 15 meters longer than it is wide, and it’s perimeter is 26 meters. Find the dimensions of the room
Julli [10]

Answer:

the room is -1m by 14m

Step-by-step explanation:

what you do to find it is first find x.

the perimeter is 26, and one side is 15 meters longer than the other(twice).

So the equation is:

x + (x + 15) + x + (x + 15) = 26

2x + 2(x + 15) = 26

2x + 2x + 30 = 26

4x + 30 = 26

26 - 4x = 30

26 - 26 - 4x = 30 - 26

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Now we have two sides of the room. Now we want the 15m longer ones...

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so the dimensions are -1 by 14, or -1x14

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5 0
3 years ago
HELP NEEDED ASAP!! WILL MARK BRAINLIEST!!!! genuine answers only, links = reported
Viefleur [7K]

Answer:

A. 3 and a half hours (3 hours 30 minutes)

B. 72 dollars

Step-by-step explanation:

A. first do 512-92 = 420

420/120 = 3.5 hours

B. 2 hours = 240 dollars

312 - 240 = 72 dollars for the parts

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3 years ago
Which expression is equivalent to 3 x 3 x 3 x 3
ArbitrLikvidat [17]

Answer:

I can’t c anything where are the answers we’re choosing ?

Step-by-step explanation:

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3 years ago
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