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Margarita [4]
3 years ago
7

The probability of spinning and landing on red is 20%. Meg spins the spinner 25 times and lands on red 10 times, or 40% of the t

ime. She spins the spinner 80 times and lands on red 18 times or 22.5% of the time. What is a good explanation for this?
A) Meg miscounted the first time.

B) The spinner broke the second time and didn't land on red.

C) The less trials you do, the closer experimental probability gets to the theoretical probability.

D) The more trials you do, the closer experimental probability gets to the theoretical probability.
Mathematics
2 answers:
ki77a [65]3 years ago
7 0

Answer:D) The more trials you do, the closer experimental probability gets to the theoretical probability.

Step-by-step explanation:

kow [346]3 years ago
4 0
D is your correct answer, the more trials you do, the closer you get to an accurate probability. Think of it like scientific trials. The less you do, the further you are from creating an accurate law of science, but something that has been tested over and over again is more likely to be accepted as an accurate fact.
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It took Leo 3 hours to type a 4125-word essay. Sarah typed her 3800-word essay in 3 hours and 10 minutes. At these rates, how mu
scoray [572]

Answer:

Sarah would take 35 minutes longer than Leo to type 5500 word essay

Step-by-step explanation:

Let us solve the question

∵ It took Leo 3 hours to type a 4125-word essay

→ The rate is the number of words divided by the time

∴ Leo's rate = 4125 ÷ 3 = 1375 words/hour

∵ Sarah typed her 3800-word essay in 3 hours and 10 minutes

→ Change the 10 min to the hour by divide it by 60

∵ 3 hours 10 min = 3 + \frac{10}{60} = 3 + \frac{1}{6}  = 3\frac{1}{6} hours

∴ Sarah's rate = 3800 ÷ 3\frac{1}{6}  = 1200 words/hour

∵ Leo will type a 5500-word essay

→ Divide it by his rate to find the time taken

∴ Leo takes = 5500 ÷ 1375 = 4 hours

∵ Sarah will type a 5500-word essay

→ Divide it by her rate to find the time taken

∴ Sarah takes = 5500 ÷ 1200 = 4\frac{7}{12} hours

→ Find the difference between their times

∵ The difference = 4\frac{7}{12} - 4 = \frac{7}{12} hour

→ Multiply it by 60 to change to minutes

∴ The difference = \frac{7}{12} × 60 = 35 minutes

∴ Sarah would take 35 minutes longer than Leo to type 5500 word essay

3 0
3 years ago
If an ant runs randomly through an enclosed
liraira [26]
The area of a circle is π (radius²)

The area of the outer (2-ft) circle is π (2²) = 4 π square feet.

The area of the inner (1-ft) circle is π (1²) = 1 π square feet.

The inner circle covers 1/4 of the area of the outer circle.

So if the ant wanders around totally aimlessly and randomly, and there's no way to
know where he came from, where he is now, or where he's going next, and there's
an equal chance of him being <em><u>anywhere in the big circle</u></em> at any time, then there's a
<u>25% chance</u> of him being inside the small circle at any time, because 1/4 of the
total area is in there.

That's choice c).

4 0
3 years ago
You need to drive to a game that is 320 miles away. You have 5.5
kaheart [24]
Thing is, you didn't give us the choices!

7 0
3 years ago
Read 2 more answers
Help plz:)))I’ll mark u Brainliest
rodikova [14]

Answe

Step-by-step explanation:

The interior angles of a triangle add up to 180. We know from the photo that there is a 90° angle and an 18° angle, and 90-18 is 72, so the other interior angle is 72°. The question is asking you to find the value of side x, so you'll need to use sin.

sin (72°) = x/16

x ≈ 15.2

4 0
3 years ago
Harley is loading 625 bags of cement in pallets . Each pallet holds 5 bags. How many pallets well she need?
notka56 [123]
625/5=125
125 is your answer
4 0
3 years ago
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