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3 years ago

13

the teacher said there was about a one in a million chance of obtaining a perfect score by guessing on a test where all question

s were true or false. assuming the teacher was not exaggerating, about how many true-false questions were on this test?

1 answer:

Elden [556K]3 years ago

5 0

Would it be one million? That's my best guess

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How do I change 1 1/2 to a proper fraction?

Tanya [424]

2x1=2

2+1=3/2

=3/2 is the answer

8 0

3 years ago

Tia measured the daily high temperature in Kats, Colorado for each of the 30 days in April. She then created both a dot plot and

lara31 [8.8K]

*see attachment below showing the dot plot and box plot created by Tia

Answer:

Dot plot

Step-by-step explanation:

In a dot plot, the temperature of a day is represented by 1 dot. There are 30 dots on the box plot shown in the attachment that was made by Tia.

This dot plot display makes it easier to find how many days had a temperature that is higher than 15°.

Thus, from the dot plot, we have:

2 dots representing 2 days having a temperature of 16°C each

2 days also have daily temperature of 17°C

2 days have temperature of 18°C as well, and

1 day has temperature of 19° C.

Therefore, the number of days that had a temperature above 15°C is 7 days.

3 0

3 years ago

Read 2 more answers

Two similar solids are shown A and B

vodomira [7]

Answer:

<h2>120 cm³</h2><h2 />

Step-by-step explanation:

this is a ratio and proportion of two similar solids

vol A = 60 cm³ and A = 3cm

vol B = ? and B = 6 cm

<u> 60 </u> = <u> 3 </u>

B 6

do cross multiply:

3B = 60(6)

B = 120 cm³

therefore, the vo. of B is 120 cm³

5 0

3 years ago

The monthly list of expenditures on your credit card statement can be very helpful at tax time to find items for which you are e

lakkis [162]

Answer: Yes, your monthly list of expenditures on your credit card statement could very helpful at tax time.

When it comes time to file your taxes, there are a variety of different items that could be deductible.

For example, if you operate your own business, you may be able to deduct certain expense. Also, if you have a lot of medical expenses, they could be tax deductible. If you donate money to charitable organizations, it could be tax deductible.

It would be wise to save your statements and look for deductions.

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3 years ago

A cup of coffee at 95 degrees Celsius is placed in a room at 25 degrees Celsius. Suppose that the coffee cools at a rate of 2 de

Roman55 [17]

Answer:

See Explanation

Step-by-step explanation:

For an object at temperature T and supposing that the ambient temperature is Ta then we can write the differential equation that typifies the Newton law of cooling as follows;

dT/dt=-k(T-Tₐ)

So

dT/dt = 2 degrees Celsius per minute

T = 70 degrees Celsius

Ta = 25 degrees Celsius

2 = -k(70 - 25)

-k = 2/(70 - 25)

k = - 0.044

Hence we can write;

dT/dt=-(- 0.044)(95-25)

dT/dt= 3 degrees Celsius per minute

4 0

3 years ago