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3 years ago

Is the relation in the mapping below a function? Explain.

Mathematics

1 answer:

MariettaO [177]3 years ago

5 0

Answer: No

Step-by-step explanation:

The range and the Domain aren’t equal

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Write:<br> 3^-4 in standard form

pav-90 [236]

Answer:

$\frac{1}{81}$

Step-by-step explanation:

<u>Key skills: Exponents + Fractions</u>

Use the negative exponent property. If your number is x^-y then it would be the same as 1/x^y

3^-4 is the same as $\frac{1}{3^{4}}$

3^4 is 81, so your answer would be 1/81.

Hope you have a nice day and understood this!

4 0

3 years ago

$12 saved after 2 weeks ; $36 saved after 6 weeks

JulsSmile [24]

That is correct. Were you meant to link a picture?

7 0

2 years ago

Read 2 more answers

Which is greater 6.789 or 67.890?

Vlada [557]

67.890, because 67 is greater than 6

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3 years ago

Read 2 more answers

Assume that y varies inversely with x. If y=12 when x=5, find y when x=3

NemiM [27]

Inversely variation means xy = c, where c is a constant

Since when y = 12 x = 5, then c = 12*5 = 60

So xy = 60

Now when x = 3, y = 60/3 = 20

7 0

3 years ago

Which expression is a difference of squares with a factor of 5x − 8?

Olegator [25]

Answer:

$25x^2-64$

Step-by-step explanation:

Remember that the formula for the difference of squares is $a^2-b^2=(a+b)(a-b)$ . The formula implies that if (5x - 8) is a factor, then (5x + 8) is the other factor. We can use our formula to find which one is our difference of squares:

$(5x-8)(5x+8)=(5x)^2-8^2$

$(5x-8)(5x+8)=5^2x^2-64$

$(5x-8)(5x+8)=25x^2-64$

We can conclude that the correct answer is $25x^2-64$ .

4 0

3 years ago