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Vikki [24]
3 years ago
10

The diameter of a circle is 9m.Find its area to the nearest tenth

Mathematics
1 answer:
kirill115 [55]3 years ago
8 0

Answer:

63.6m²

Step-by-step explanation:

The radius is 4.5m because it's half of the diameter.

Area = πr²

Area = π(4.5)² = 63.6m²

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AysviL [449]

Answer:

42

Step-by-step explanation:

add both bases together and divide by 2 and multiply by height

so= 1+6/2 x 12

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3 years ago
Acidity is measured on the pH scale. The acidity of a substance is given by pH=−logH, where H is the concentration of Hydrogen i
frosja888 [35]

Answer:

[H^+] = Antilog[-6]

Step-by-step explanation:

Even though the question is incomplete, let us try to correctly derive the equation used to find the hydrogen ion concentration.

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-pH = log[H^+]

[H^+] = Antilog[-pH]

Since pH =6

The equation is;

[H^+] = Antilog[-6]

8 0
3 years ago
Read 2 more answers
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photoshop1234 [79]
Use the terms and variables given to find an equation to find the answer.
Price= $2 + .12xminutes
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m=13.08/.12
m=109 minutes
4 0
4 years ago
When it comes to positive and negative sign if two sign are the same they’re negative right and if they are different they are p
KatRina [158]

Answer:

When you have two negative signs, one turns over, and they add together to make a positive. If you have a positive and a negative, there is one dash left over, and the answer is negative.

<em>I hope this was the answer you were looking for - Lily~Senpai :P</em>

4 0
3 years ago
The sum of two numbers is 42. The larger number is 2 more than 4 times the smaller number. What is the smaller number?
Murrr4er [49]

Answer:

the lesser number is 3

Step-by-step explanation:

42÷2=21

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yhe question states the lesser number is 2 mote than 4 times

7 0
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