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Mamont248 [21]
3 years ago
7

A quiz consists of 770 true or false questions. If the student guesses on each question, what is the mean number of correct answ

ers?​
Mathematics
2 answers:
Svet_ta [14]3 years ago
7 0

Answer: you have a 50/50 chance of getting it right, so basically the number would be 385. half of 770 is 385.

Step-by-step explanation: im built different

amid [387]3 years ago
5 0
385 or 1/2 i suppose
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Use the following scenario to answer the question below:
Stolb23 [73]

The bigger engine is about 235.5 cubic centimeters larger than the smaller engine.

We need the answer in cubic centimeters. So let's convert 350 cubic inches to cubic centimeters. We will do it unit conversion way (the long way).

We will write cubic inches as three inches side-by-side

350 in^3

<h3>What is the ratio of the centimeter?</h3>

This way, we can multiply this by the ratio of centimeters to inches [2.54 cm = 1 inch], so that the units cancel and we have cubic centimeters (what we desire).

350 in^3*3.54cm/1in*3.54cm/1in*3.54cm/1in

So, we can cancel the three inches top and bottom thus we have the answer in centimeters cubed. And the value is

350 in^3*3.54cm/1in*3.54cm/1in*3.54cm/1in.

350 in^3*3.54cm/1in*3.54cm/1in*3.54cm/1in=5735.47.

So 350 cubic inches is approximately 5735.5 cubic centimeters (rounded to 1 decimal place).

This is larger than a 5500 cubic centimeters engine.

5735.5-5500=235.5cubic centimeters.

The bigger engine is about 235.5 cubic centimeters larger than the smaller engine.

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brainly.com/question/24491627

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6 0
2 years ago
During a drive to Arizona, for the first two hours Emily drove at 50 mph,
galina1969 [7]

Answer:

the EXACT answer is 29.16666667

Step-by-step explanation:

First you add 50, 60, and 65 and get 175

she is driving for 6 hours so you divide 175 by six to get the average

Then you get 29.16666667

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3 years ago
Which equation below has no solution?
soldier1979 [14.2K]

Answer:

B

Step-by-step explanation:

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3 years ago
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Answer: A=4πr2

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As an estimation we are told 5 miles is 8 km. <br> Convert 32.5 miles to km.
elixir [45]

Answer:

52 km

Step-by-step explanation:

Given, 5 miles is 8km.

So, 1 mile will be (8/5) km.

Now, 32.5 miles will be (8/5) x 32.5 = 52 km

5 0
3 years ago
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