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Rus_ich [418]
4 years ago
14

Which rational expression is equal to a positive whole number when evaluated?

Mathematics
2 answers:
trapecia [35]4 years ago
6 0

Answer:

B) 8^1/3

Step-by-step explanation:

It is B) 8 ^1/3

we can write 8 as 2^3

8^1/3 = (2^3)^1/3

= 2^3/3        [3/3 = 1]

= 2^1

= 2 which is a whole number.

Answer: B) 8^1/3

Hope this will helpful.

Thank you.

trasher [3.6K]4 years ago
4 0
8^1/3 8 is 2^3 so 8^1/3 = 2 The other expresssions don't give whole numbers.
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Six times a number is 45 greater than the product of the number and -3. Find the number.
LiRa [457]

Answer:

5

Step-by-step explanation:

6a = (a*-3) + 45

then:

6a = -3a + 45

6a + 3a = 45

9a = 45

a = 45/9

a = 5

Check:

6*5 = (5*-3) + 45

30 = -15 + 45

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3 years ago
A phone company charges 12 cents per minute of call. If Gerardo made a call that took 75 minutes using this plan, how much did h
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Step-by-step explanation:

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3 years ago
You begin solving the equation 3+4x=513+4x=51 by subtracting 33 from both sides. Which is the best choice for Step 22?
bonufazy [111]
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Answer
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7 0
4 years ago
Find the secant of angle Z<br> A.4/5<br> B.4/3<br> C.3/5<br> D.5/3
Alex73 [517]

Answer:

D 5/3

Step-by-step explanation:

Secθ= Hypotenuse/Adjacent

Secθ=10/6

Simplify: 10/6 -->5/3

Ans: D 5/3

remember your six trigonometric functions:

Sinθ=Opp/Hyp -->Cscθ=Adj/Hyp

Cosθ=Adj/Hyp -->Secθ=Hyp/Adj

Tanθ=Opp/Adj-->Cotθ=Opp?Adj

It is basically the opposite of each other, don't forget when you are at the last step you simplify! never forget. Also working with square roots will be a bit tricky when converting to Csc/ Sec/ Cot. Just noting you that Square roots don't belong in denominators!

3 0
3 years ago
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Answer:

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