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4 years ago

What are the extremes of the following proportion 3/15 = 12/60

2 answers:

7 0

In a proportion there are letters assigned to represent various numbers. a, b, c, and d.

a, b, c, and d are 4 non-zero rational numbers that are terms of proportion.

a/b = c/d or a:b = c:d

a and d are the end terms or known as the extremes.
b and c are the middle terms or known as the means.

With this information, we can gather that the extremes of the following proportion are 3 and 60.

3/15 = 12/60 ; a/b = c/d
a = 3 ; b = 15 ; c = 12 ; d = 60

3 and 60 are the extremes
15 and 12 are the means

Anestetic [448]4 years ago

6 0

The answer is A. 3 and 60 are the extremes

B. 15 and 12 are the means

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3 years ago

What is - 4i ^ 19, simplify

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Answer:

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3 years ago

Before calculators were around, why was it's advantageous to use logarithms to calculate roots

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3 years ago

Which of the following is NOT a rational number?

makvit [3.9K]

Answer:

A <u>rational number</u> is a number that can be expressed as a fraction (the ratio of two integers).

<u>Integer</u>: A whole number that can be positive, negative, or zero.

To calculate if each radical can be expressed as a rational number, convert the decimals into rational numbers, then simplify:

$\sqrt{121}=\sqrt{11^2}=11=\dfrac{11}{1} \quad \leftarrow \textsf{rational}$

$\sqrt{12.1}=\sqrt{\dfrac{1210}{100}}=\dfrac{\sqrt{1210}}{\sqrt{100}}=\dfrac{\sqrt{121\cdot 10}}{10}=\dfrac{\sqrt{121}\sqrt{10}}{10}=\dfrac{11\sqrt{10}}{10} \leftarrow \textsf{not rational}$

$\sqrt{1.21}=\sqrt{\dfrac{121}{100}}=\dfrac{\sqrt{121}}{\sqrt{100}}=\dfrac{\sqrt{11^2}}{\sqrt{10^2}}=\dfrac{11}{10} \leftarrow \textsf{rational}$

$\sqrt{0.0121}=\sqrt{\dfrac{121}{10000}}=\dfrac{\sqrt{121}}{\sqrt{10000}}=\dfrac{\sqrt{11^2}}{\sqrt{100^2}}=\dfrac{11}{100} \leftarrow \textsf{rational}$

Therefore, $\sf \sqrt{12.1}$ is not a rational number.

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2 years ago

I'm thinking of a number. I subtract 4 and then halve the result. The answer is 9. What is the number I am thinking of?

Maru [420]

Hey There

Correct answer: 13

Why? To find this out you need to add 4 to 9 to figure it out

have a good day

4 0

3 years ago

Read 2 more answers