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Darina [25.2K]
3 years ago
11

Jacquie used an app to simulate a coin flip 400 times. It lands on heads 222 times. Based on her results, Jacquie predicts that

the expected number of times the coin will land on heads in 10,000 trials is 5,000 times. Do you think Jacquie's expected results are correct? Explain your reasoning.
Mathematics
1 answer:
vlabodo [156]3 years ago
5 0

Answer: No

Step-by-step explanation: If flipped 400 times and 222 times are heads, then there is a 55.5% chance it will be heads. If flipped 10,000 times, then there should be 5550 heads.

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6*87 is greater than 5*87. How much greater? Explain how you know without multiplying.
Juli2301 [7.4K]
You know that if you are multiplying a number by 5, and multiplying the same number by 6, 6 is going to be bigger
8 0
3 years ago
What is the x-intercepts of the graph of y = 12x-5x-2
devlian [24]
Hey there!

First, we see that it's already written in slope intercept, y = mx + b where m is the slope and b is the y intercept, we just need to simplify the like terms on the right. We have:

y = 12x-5x-2
y = 7x - 2

Now that we have it in slope intercept form, whenever we have an x intercept, since it is crossing the x axis, there's no y value. We plug in 0 for y:

0 = 7x - 2
2 = 7x
2/7 = x

The x intercept is (2/7, 0)

Hope this helps!
6 0
3 years ago
A salesperson earns a commission based on the number and type of vehicle sold. A person selling 6 cars and 3 trucks earns $4,800
madam [21]
4800 divide by 3=1600 (2 cars 1 truck)

4600-1600-3000 (6 cars)

3000 divide by 3 = 1000(2cars)

1000 times 2=2000(4 cars )

4800-2000-2800 (2 cars 3 trucks)

$2,800 is your answer
8 0
2 years ago
A sphere has a radius of 12 inches. A second sphere has a radius of 9 inches. What is the difference of the volumes of the spher
just olya [345]

Answer:

Solution given;

for sphere

radius [r]:12inches

another

radius [R]:9inches

Now

difference in volume of sphere:

volume of sphere of having radius [r-R]

=\frac{4}{3} πr³-\frac{4}{3} πR³

=\frac{4}{3} π(12³-9³)

= 1332π cubic inches

The volume of the larger sphere is <u>___1332</u>__π cubic inches greater than the volume of the smaller sphere.

3 0
3 years ago
Someone please help.
vitfil [10]

Answer:

not correct

tan 60 = x / 2

square root(3) = x / 2

x = 2 * Square root(3)

= Square root ( 4 * 3) = Square root (12)

4 0
3 years ago
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