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atroni [7]
2 years ago
8

What is 1 + -1 and the area of my mom

SAT
1 answer:
tankabanditka [31]2 years ago
7 0

Answer:2 or 0

Explanation:1+1=2 1-1=0

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Students with an Expected Family Contribution of _____ are eligible for the full amount of the Pell Grant.
bogdanovich [222]

*(The Answer)*= is 0 which is B

Please Mark me brainiest

6 0
3 years ago
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At a college fair, the best person with whom to discuss a college that you are interested in is the:
tamaranim1 [39]

You should talk to a college representative, representing the college you are interested in or a admission officer.

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3 years ago
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assume that a raindrop's volume is 1 cubic centimeter. in centimeters, what would be the depth of water in a pan whose square ba
Verdich [7]

The volume of a fluid that flows past a point per unit time through an area is known as the flow rate, Q

The depth of water in the pan after one hour is <u>0.72 meters</u>

Reason:

The given parameters are;

The volume occupied by one rain drop = 1 cm³

The area of the square base of the pan = 1 meter by 1 meter

Duration of the rain, t = 1 hour

Rate at which rain falls  = 2 raindrops per second

Region where the rain falls = 10 cm by 10 cm

Depth of water in the pan after 1 hour = Required

Solution:

The number of seconds in 1 hour = 3,600 seconds

Number of raindrops in a 10 cm by 10 cm region, <em>n</em>, is given as follows;

n = 10 drops × 10 drops = 100 drops

Number of raindrops in 1 hour = 2 × 100 drops/s × 3,600 s = 720,000 drops

Volume of water in the rain, V = 720,000 drops × 1 cm³/drop = 720,000 cm³

Area of the pan = 1 m × 1 m = 100 cm × 100 cm = 10,000 cm²

Cross sectional area of the pan = 10,000 cm²

  • Depth \ of \ water \ in  \ the \ pan = \dfrac{Volume \ of \ rain \ water}{Cross \ sectional \ area \ of \ pan}

Depth \ of \ water \ in  \ the \ pan = \dfrac{720,000 \ cm^3}{10,000 \ cm^2} = 72 \ cm

Therefore;

  • The depth of water in the pan after one hour, d = 72 cm = 0.72 m

Learn more here:

brainly.com/question/13559135

7 0
3 years ago
What is the term for a preset command in a spreadsheet?
Murljashka [212]

The terminology for a preset command that is used in a spreadsheet is a: function.

<h3>What is a spreadsheet?</h3>

A spreadsheet refers to a to a document which comprises cells that are arranged in a tabulated format with rows and columns. Also, a spreadsheet is typically used in various field to do the following on a data:

  • Sort
  • Calculate
  • Format
  • Arrange

<h3>What is a function?</h3>

In Computer technology, a function refers to a named portion of a block of executable code that can be used as a preset command to perform a specific task, which is usually a single, related action.

In this context, we can infer and logically deduce that a function is the terminology for a preset command that is used in a spreadsheet.

Read more on spreadsheets here: brainly.com/question/4965119

#SPJ1

3 0
2 years ago
How long will it take for 475 mg of a sample of radium-225, which has a half-life of about 15 days, to decay to 30 mg
zlopas [31]
<h3>Answer:</h3>

60 days

<h3>Explanation:</h3>

Half-life is the amount of time it takes half of a substance to decay away.

Guess and Check

One method for solving half-life problems like this is to guess and check. To do this, we can continue to divide 475mg by 2 until we get to 30mg.

  • 475 ÷ 2 = 237.5
  • 237.5 ÷ 2 = 118.75
  • 118.75 ÷ 2 = 59.375
  • 59.375 ÷ 2 = 29.6875

As seen here, it takes approximately 4 half-lives for this sample of Ra-225 to decay to 30mg. Now, we can multiply 4 by the length of the half-life, 15 days.

  • 4 * 15 = 60 days.

Fractions

Another way to solve this is to use fractions.

  • 30 is about 1/16 of 475
  • 16 is equivalent to 2^{4}.

This means that it takes 4 half-lives for 475mg to decay to 30mg. Using the same method above, we can tell that 4 half-lives are 60 days.

Important Note

In this question, I rounded occasionally. So, not all of the values are exact, but they are all very close.

7 0
2 years ago
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