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MA_775_DIABLO [31]
2 years ago
12

Is 12.2 a rational or irrational number

Mathematics
1 answer:
ikadub [295]2 years ago
3 0
12.2 is a rational number because you can write it as a fraction.
Hope this answered your question.
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Add these polynomials and simplify. Enter your response in standers form (x^4-9+5x^7) + ( 5x -10 +3x^4 - 2x^2)
Natali [406]

Answer:

5x^7 + 4x^4 - 2x^2 + 5x - 19

Step-by-step explanation:

Start by copying 5x -10 +3x^4 - 2x^2 here.  Next, add x^4 to +3x^4, -9 to -10, and 5x^7:

5x - 10 +3x^4 - 2x^2

     -  9  +x^4               + 5x^7

-----------------------------------------

5x - 19 + 4x^4 - 2x^2 + 5x^7

Now rearrange these terms in descending order by powers of x:

5x^7 + 4x^4 - 2x^2 + 5x - 19   (answer)

4 0
3 years ago
Read 2 more answers
Issac drove 100 miles at a speed of 50 mph and then 120 miles at a speed of 30 mph what was his average speed for the entire tri
Lina20 [59]

Answer:

The average speed is 36.67 m/h

Step-by-step explanation:

100/50 = 2

120/30 = 4

Total time = 6

Total distance = 220 miles

220/6 = 36.67

6 0
3 years ago
the volume of a cube is 64in squared (2). what’s the length of each side of the cube please help asap
blsea [12.9K]

Answer:

4in squared

Step-by-step explanation:

We know that cubes have equal parts all around, and it is basic knowledge for the most part to know 4x4x4 = 64. Therefore, each length must be 4, length, width,and height are all 4.

8 0
2 years ago
Is the square root of 3 rational or irrational
enyata [817]

Answer:

The square root of three is irrational.

Step-by-step explanation:

3 0
2 years ago
Marlene rides her bicycle to her friend​ jon's house and returns home by the same route. marlene rides her bike at constant spee
riadik2000 [5.3K]

To solve the problem:

<span>Let f = distance one way distance on level ground</span>

<span>
Let h = distance rode on the hill</span>

<span>
Write a time equation; where Time = distance/speed:</span>

<span>

level time + uphill time + downhill time + level time = 1hr</span>

<span>
</span>

<span>f/9 + h/6 + h/18 + f/9 = 1 hr</span>

<span>

Multiply equation by 18 to get rid of the denominators</span>

<span>
</span>

 

2f + 3h + h + 2f = 18


4f + 4h = 18


Simplify by dividing this by 4


<span>f + h = 4.5 miles is took her to get to Jon’s house.</span>

6 0
2 years ago
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