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3 years ago

7

Of the 28 letters in the Arabic alphabet, 22 come from the Nabataean alphabet, What is the ratio of the Arabic letters that come

from the Nabataean alphabet to the total number of letters in the Arabic alphabet?

1 answer:

kherson [118]3 years ago

7 0

Im pretty sure that would just be 1.2 to 1
hope i helped

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Byron is conducting an experiment to determine whether a new medication is effective in reducing coughing. He finds 1,200 volunt

hammer [34]

Answer:

The medication is effective, but may take some time to work its way to the immune system

Step-by-step explanation:

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2 years ago

A 20-gallon salt-water solution contains 15% pure salt. How much pure water should be added to it to produce a 10% solution?

Elanso [62]

15% of 20 gal = 0.15 * 20 gal = 3 gal, so the solution contains 3 gal of salt.

If we add <em>x</em> gal of water to the solution, we end up with (20 + <em>x</em>) gal of solution. We want the new mixture to have a concentration of 10%, or

10% of (20 + <em>x</em>) gal = 0.1 * (20 + <em>x</em>) gal = 2 + 0.1<em>x</em> gal

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The amount of salt in the tank hasn't changed. Solve for <em>x </em>:

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3 years ago

A circle has a diameter of 26 units. What is the area of the circle to the nearest hundred of a square unit?

Nady [450]

Answer: The area is 530 square units

Step-by-step explanation: The diameter of the circle has been given as 26. That makes the radius 13, that is;

Radius = diameter/2

Radius = 26/2

Radius = 13

The area of a circle is derived by the formula;

Area = pi x r^2

Where pi is 3.14 and r is 13,

Area = (3.14) x 13^2

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Approximately to the nearest hundred of a square unit,

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3 years ago

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Answer:

The questions and problem can be chosen in 1260 ways.

Step-by-step explanation:

Given that, a physics exam consists of 6 open-ended problem and 9 multiple choice questions.

The order of choosing does not matter.

So,we use combination to find ways.

The ways to choose 6 multiple choice from 9 is= $^9C_6$

$=\frac{9!}{6!(9-6)!}$

=84

The ways to 2 open-ended question from 6 is= $^6C_2$

$=\frac{6!}{2!(6-2)!}$

=15

Since pick 6 multiple choice out of 9 and 2 open-ended question out of 6 both are independent we have multiply both to find required ways.

Total number of ways is =(84×15)

=1260.

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3 years ago

The length of a side of a square is √7 cm. What is the perimeter of the square? (Perimeter = the distance around the outside of

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Since the square has 4 sides, you only have to add $\sqrt{7}$ four times.

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