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gulaghasi [49]
2 years ago
11

Please help me with my homework!

Mathematics
1 answer:
enyata [817]2 years ago
6 0
I am pretty sure the answer is c
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Which expression equals a number that is NOT a rational number?
rewona [7]
  • \frac{3\pi.3^3}{7}  is not included as a rational number !

<u>Step-by-step explanation:</u>

Here we have , following expressions & we need to identify which of the following is not a rational number . Let's find out:

We know that , Rational Number : A number which can be expressed in form of p/q , where q is not equal to zero !

Here Expressions are:

  • \frac{3\pi . 3^3}{7\pi}  :

Let's evaluate this expression

⇒ \frac{3(\pi) ( 3^3)}{7(\pi)}

⇒ \frac{3^4}{7}

Therefore , It is a rational number ! .

  • \frac{-18}{5} :

Let's evaluate this expression

⇒ \frac{-18}{5}

Therefore , It is a rational number ! .

  • \frac{5}{3-7-9} :

Let's evaluate this expression

⇒ \frac{5}{3-16}

⇒ \frac{-5}{13}

Therefore , It is a rational number ! .

  • \frac{3\pi.3^3}{7} :

Let's evaluate this expression

⇒ \frac{3\pi.3^3}{7}

⇒ \frac{\pi.3^4}{7}

Therefore , It is not a rational number , as pi is included ! .

4 0
2 years ago
Read 2 more answers
A motorboat travels 60 km in 4 hours with the current and 35 km in 3.5 hours against the current. Find the speed of the boat in
IceJOKER [234]

Step-by-step explanation:

Distance = rate × time

If b is the speed of the boat in still water, and c is the speed of the current, then:

60 = (b + c) × 4

35 = (b − c) × 3.5

Simplifying:

15 = b + c

10 = b − c

Add the equations together:

25 = 2b

b = 12.5

Plug into either equation to find c:

c = 2.5

The speed of the boat is 12.5 km/h, and the speed of the current is 2.5 km/h.

8 0
2 years ago
Read 2 more answers
Which equation represents the function shown on the graph?
Anna11 [10]

Answer:

x = 0, y = 0

Step-by-step explanation:

4 0
2 years ago
I NEED HELP PLEASE UHHH PLEASE I NEED HELP UUUUHHHHHHH
vodomira [7]

Answer:

Sulio needs 28 feet of fencing

Step-by-step explanation:

P= 2l + 2w

Length- 8 ft

Width- 6 ft

Use formula with the given:

2(8) + 2(6)

= 16 + 12

= 28

Therefore, Sulio needs 28 feet of fencing

Hope this helps

3 0
2 years ago
If 39 is 10% of a number, what is that number? How did you find your answer?
atroni [7]

Step-by-step explanation:

Let the no. be x

10\% \: of \: x =  39

\frac{10}{100} x = 39

\frac{1}{10} x = 39

x = 39 \times 10 = 390

Therefore , the no. is 390

3 0
2 years ago
Read 2 more answers
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