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joja [24]
3 years ago
9

1. How can you show that a number is a rational number?

Mathematics
2 answers:
andre [41]3 years ago
8 0

Answer:

To decide if an integer is a rational number, we try to write it as a ratio of two integers. An easy way to do this is to write it as a fraction with denominator one. Since any integer can be written as the ratio of two integers, all integers are rational numbers

ra1l [238]3 years ago
3 0

Answer:

The product of any two rational numbers is therefore a rational number, because it too may be expressed as a fraction. For example, 5/7 and 13/120 are both rational numbers, and their product, 65/840, is also a rational number.

Step-by-step explanation:

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For what value of M is the equation an identity 4x^2-x+M=3x^2+x+2
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Answer:

m=3x^{3} +2

Step-by-step explanation:

4x^{2} -x+m=3x^{2} +x+2

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The lateral area of a cone is 555 \pi cm^2 and the radius is 15.1 what is the slant height?
pishuonlain [190]
We know that
[LA]=pi*r*l
where
LA is the lateral area of the cone
r is the radius
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7 0
3 years ago
Find the average rate of change of f(x) = 4x² – 3 from 3 to 9.
Lina20 [59]

Answer:

44

Step-by-step explanation:

Given:

f(x) = 4x^2 - 3

Required:

Average range of change from 3 to 9

SOLUTION:

Step 1:

Find f(3) and f(9):

To find f(3), replace x with 3 in the given function

f(3) = 4(3)^2 - 3

f(3) = 4(9) - 3

f(3) = 36 - 3

f(3) = 33

To find f(9), replace x with 9 in the given function

f(9) = 4(9)^2 - 3

f(9) = 4(81) - 3

f(9) = 324 - 3

f(9) = 321

Average rate of change = \frac{f(b) - f(a)}{b - a}

Where,

a = 3, f(a) = 33

b = 9, f(b) = 321

Plug in the values into the formula for average rate of change.

= \frac{321 - 33}{9 - 3}

= \frac{288}{6}

= 44

Average rate of change = 44

3 0
3 years ago
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