How can you tell if a decimal can be written as a rational number?

2 answers:

4 0

In general, any decimal that ends after a number of digits such as 7.3 or −1.2684 is a rational number.

Hope this helps

Lubov Fominskaja [6]3 years ago

3 0

Answer:

any decimal that ends after a number of digits such as 7.3 or −1.2684 is a rational number

Step-by-step explanation:

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vivado [14]

Answer:

${ \tt{ = \frac{7 {p}^{2} \times 3p}{14 {p}^{4} } }} \\ = { \tt{ \frac{21 {p}^{3} }{14 {p}^{4} } }} \\ = { \tt{1.5 {p}^{ - 1} }}$

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3 years ago

Solve the proportion x/18=7/21

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Answer:

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Step-by-step explanation:

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2 years ago

Evaluate tan(Sin-1(-5/13)). Answer as a fraction please.

dangina [55]

Using pythagorean identities,tan(sin^-1(-5/13))= tan(arcsin(-5/13))

Let A = arcsin(-5/13) = -arcsin(5/13)

Thus, sin A = -5/13 and cos A = sqrt(1 - (5/13)^2) = 12/13.= tan(A)= sin(A) / cos(A)= -5/13 / (12/13)= -5/12

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3 years ago

Seven squared equal seven times

bulgar [2K]

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3 years ago

Use the following work shown below to answer the following question.

zysi [14]

Answer:

$\frac{3 + \sqrt{3x} }{3 - x}$