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Art [367]
3 years ago
9

Which is a rational number?

Mathematics
2 answers:
Zolol [24]3 years ago
7 0
Sqrt 16 = 4...this is a rational number
ra1l [238]3 years ago
4 0
I hope this helps you A) 4 B) 2square root of 2 C) 3square root of 2 D) 2 square root of 5 answer is A
You might be interested in
Pls help!!!! Rewrite the expression. <br> 4+4+5x2x5+(3+3+3)x6x6+2+2
Paha777 [63]

Answer:

386

Step-by-step explanation:

4+4+5x2x5+(3+3+3)x6x6+2+2

=4+4+5x2x5+9x6x6+2+2

=4+4+50+324+2+2

=386

8 0
3 years ago
2 2/5 x 3/4 <br> plz help me! and plz show your work.
Aneli [31]

Answer:1.8

Step-by-step explanation:

4 0
2 years ago
A hairdryer transfers 36,000J in one minute, what is the power rating of the hairdryer?
Verdich [7]

Answer:

1. 600 watts

2. 35640 J

3. 55%

4. 20 J

5. The cost of running the fire is 8p.

Step-by-step explanation:

1. Energy = 36 000 J , t = 1 minute = 60 seconds

Power = \frac{energy}{time}

           = \frac{36000}{60}

          = 600 watts

2. Power = \frac{work done}{time}

⇒ work done = Power × time

                      = 99 × 360

                      = 35640 J

3. Efficiency = (Output / Input) × 100

                    = \frac{55}{100} × 100

                    = 55%

4. Work done = Force × distance

                      = 5 × 4

                      = 20 J

5. Given that 1 KWh cost 2p, Power = 4 KW and time = 4 hours.

  Power = \frac{energy}{time}

Energy = Power × time

            = 4 × 4

           = 16 KWh

The cost of running the fire = \frac{16}{2}

                = 8p

3 0
3 years ago
Squered root of 72 in simplest radical form ?
serious [3.7K]
2/72 = 36
2/36 = 18
2/18 = 9
3/9 = 3
3/3 = 1

so now as you can see we have 3 number which is divided by 2 and 2 numbers which is divided by 3. so it becomes, 3*2√2 = 6√2 is final answer. 
7 0
3 years ago
Which expression is equivalent to (x−4)(4x2−8x+7)?
balandron [24]

Answer:

4 x^ 3 −  24 x^ 2  +  39 x  −  28

Step-by-step explanation:

This is in standard form.

8 0
2 years ago
Read 2 more answers
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