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2 years ago

9

Arthur tells you that he is thinking of an irrational number between 4 and 5, and he wants you to guess what it is. One possibil

ity you could guess is _____.
Options are:
√9
√20
4.5
√27

1 answer:

Naddika [18.5K]2 years ago

3 0

Answer:

$\sqrt{20}$

Step-by-step explanation:

Square root of 9 is 3

20 is 4.472135955

27 is 5.19615242271

4.5 is intantly wrong because it is rational.

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Answer:

3/4

Step-by-step explanation:

1/4 + 2/4 = 3/4

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3 years ago

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Anettt [7]

Answer:

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2 years ago

Plutonium–238 has a yearly decay constant of 7.9 × 10-3. If an original sample has a mass of 15 grams, how long will it take to

eduard

The answer is 28 years

At = A0 * e^(-k * t)
At = 12 g
A0 = 15 g
k = 7.9 × 10^-3 = 0.0079
t = ?

12 = 15 * e^(-0.0079 * t)
12/15 = e^(-0.0079 * t)
0.8 = e^(-0.0079 * t)

Logarithm both sides (because ln(e) = 1:
ln(0.8) = ln(e^(-0.0079 * t))
ln(0.8) = (-0.0079 * t) * ln(e)
-0.223 = -0.0079 * t
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3 years ago

James has a recipe that uses 1 1/2 cups of brown and 2 1/3 cups of flour to make 24 muffins. He has a total of 7 cups of sugar.

AURORKA [14]

Answer:

Part A: James needs 10 1/2 cups of sugar if he uses all 7 cups of flour

Part B: James will make 72 muffins if he uses all 7 cups of flour

Step-by-step explanation:

*I had an easier time figuring out part B before I figured out part A

PART B:

If the original recipe uses 2 1/3 cups of flour, and James has 7 cups of flour, I started off by dividing 7 by 2 1/3 to see how many times we can get 2 1/3 cups out of 7 cups. 7 divided by 2 1/3 = 3. Now that we know we can get 3 cups out of 2 1/3 cups, we need to multiply 3 by 24 to find out how many muffins James will get. 24 * 3 = 72

James will get 72 muffins by using 7 cups of flour.

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3 years ago

A total of 351 tickets were sold for the school play. They were either adult tickets or student tickets. The number of students

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3 years ago