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shutvik [7]
2 years ago
15

Mrs. Homan's first period class watched out the window and recorded the color of the cars that drove by the school. They found t

hat 19 our of 50 cars were red. If 7200 cars drive by the school each day, how many are expected to be red?
Mathematics
1 answer:
Novosadov [1.4K]2 years ago
3 0

Answer:

2736/7200 or 19/50

Step-by-step explanation:

7200/50 = 144

19 x 144 =

2736/7200 =

1368/3600 =

684/1800

342/900

171/450

57/150

19/50

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NeTakaya

Answer:

The answer is C) Y = 4

Step-by-step explanation:

In A, the slope is defined as 2.

In B, the slope is defined as 1/2.

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8 0
3 years ago
Please help fast! Rosa's friend Jake claims that he can read minds. To test Jake's abilities, Rosa chooses 3 different numbers
grigory [225]

Jake's guesses are illustrations of probabilities.

The probability that Jake's guesses are correct is 1/720

The sample size is:

\mathbf{n = 10} --- 10 different numbers

The probability that Jake's guesses are correct is as follows:

  • 1st guess = 1/10
  • 2nd guess = 1/9
  • 3rd guess = 1/8

So, the required probability is:

\mathbf{Pr = \frac{1}{10} \times \frac 19 \times \frac 18}

\mathbf{Pr = \frac{1}{720} }

Hence, the probability that Jake's guesses are correct is 1/720

Read more about probabilities at:

brainly.com/question/11234923

5 0
3 years ago
A number cube is rolled. what is P(3 or an even number)? A)1/2 B)2/3 C)4/2 D)1/6
AVprozaik [17]
B, 2/3 since if it is a normal dice (meaning have the number 1/6) the number 2,3,4, and 6 matches the rule. which is 4 numbers out if 6. 4/6 is equal to 2/3.
7 0
4 years ago
Review: Key Concepts
inessss [21]

Answer:

Not helpful

Step-by-step explanation:

4 0
3 years ago
The weight of a rock sample is measured to be 2.5 pounds. What is the percent of error in the measurement?
IceJOKER [234]

Alright, lets get started.

The margin of error is understood to be half the value of the last significant place.

The last significant place for 2.5 pound is the tenths place.

A tenth is 0.1, so half of that is 0.05.

If 0.05 is the measurement error, the correct measurement will be :

2.5 + 0.05 = 2.55

or

2.5 - 0.05 = 2.45

So, percentage of error would be :

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2 %

Similarly,

Percentage of error would be :

\frac{2.5 - 2.45}{2.45} * 100

2 %

Hence error percentage would be 2 % : Answer

Hope it will help :)

4 0
3 years ago
Read 2 more answers
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