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Zarrin [17]
3 years ago
11

What is the area of a circle

Mathematics
1 answer:
ladessa [460]3 years ago
7 0

Answer:

πr^{2}

Step-by-step explanation:

You would find the square of the radius (radius x radius), then multiply this by pi, or substitute the radius length into the equation where it says 'r', then type this into your calculator.

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The table your working at keeps wobbling. You decide to fix it by making a thick pad of paper from folded sheets of paper. Each
loris [4]
To answer this question and you will use exponents.

When you fold your paper three times, it is represented as two cubed or 2^3.

When you for your other sheet of paper two times, it is represented as two squared or 2^2.

Put Both of these together and you have 8+4 which equals 12.

It will take 12 layers of paper.
5 0
3 years ago
F(x) =x^2-5x write down the value of ff(2).
stiv31 [10]
It would be -6.
This makes use of the Remainder Theorem.
3 0
3 years ago
Andre and Elena knew that after 28 days they would have 2²⁸ coins, but they wanted to find out how many coins that actually is.
vlada-n [284]

Answer:

I agree with none of them

Step-by-step explanation:

Given

Expression= 2^{28}

Andre: 2 * 28 = 56

Elena: 28 * 28 = 756

Required

Who is correct?

Expression= 2^{28}

When we apply law of indices to the above, it gives 2 multiplies by itself in 28 places

i.e.

Expression= 2^{28}

Expression= 2*2*2*..........*2 ---- in 28 places

Andre's interpretation of the expression is incorrect as:

2^{28} \neq 56

Also, Elena's expression is incorrect.

This is so, because

2^28 \neq 28*28

<em>Hence, both of them are incorrect and I agree with none of them</em>

6 0
3 years ago
Which of the following mappings is not a function?
garik1379 [7]
The third one is not a function :)
4 0
3 years ago
I need help with this in 7th grade just started to learn this
tatuchka [14]

Answer:

99

Step-by-step explanation:

110% × 90 = 99

<em>OR</em>

110/100 × 90 (Simplify this)

11/10 × 90 (Divide 10 into 90 / Cross multiply)

11 × 9 = 99

8 0
3 years ago
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