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Artist 52 [7]
3 years ago
8

-0.75 is it rational or irrational

Mathematics
2 answers:
Mademuasel [1]3 years ago
6 0

-0.75 is a rational number because it can be expressed as the fraction -3/4 and it is an integer

svetoff [14.1K]3 years ago
6 0
It is rational. numbers like pi are irrational.
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uppose that we have collected information on how much a sample of households spend on clothing per year. If we are 90% confident
Verizon [17]

Answer:

the chance that the population mean will either be less than $1,500 or above $2,100 is 10%

Step-by-step explanation:

We are 90% confident that the true population mean willl be between $1,500 and $2,100

This means that there is a 90% probability that the true population mean will be between $1,500 and $2,100.

So 100-90 = 10% probability that it is outside of this interval, that is, either be less than $1,500 or above $2,100.

So the correct answer is:

the chance that the population mean will either be less than $1,500 or above $2,100 is 10%

5 0
3 years ago
1/3·(−3x+4y−5z) help plz
Maksim231197 [3]

Answer:

To solve this we need to form 2 equations with only 2 variables.

x+4y-5z=-7

2x+y+5z=8

3x+5y=1

15x+10y+15z=35

6x+3y+15z=24

9x+7y=11

Now we need to use these to find x and y

9x+15y=3

9x+7y=11

8y=-8

y=-1

Therefore:

x=2

From this we can find that:

2(2)-1+5z=8

Therefore z=1

The answer is x=2, y=-1, z=1

7 0
3 years ago
Read 2 more answers
Please answer this question I will give you brainliest!​
romanna [79]

circumference of circle= 2x3.14r

1) radius is 9

2x3.14x9

18x3.14= 56.52

2) radius is 8

2x3.14x8

16x3.14= 50.24

3) radius is 5

2x3.14x5

10x3.14= 31.4

4 0
3 years ago
Write the standard equation of the circle with the given center is (0,0) and radius is 2.5
BlackZzzverrR [31]

Answer:

x² + y² = 6.25

Step-by-step explanation:

The standard equation of a circle is ( x – h)² + ( y - k)² = r² where the center is (h, k) and r is the radius.

From your given information that the center is (0, 0) then both h and k are 0. Then r is 2.5, so

( x – 0)² + ( y - 0)² = (2.5)²

x² + y² = (2.5)²

x² + y² = 6.25

7 0
2 years ago
Find the unit rate 42 pages
Rainbow [258]

Answer:

14 pages per day

Step-by-step explanation:

To do this, you must divide:

43 (pages)/3(days)= 14 (pages per day)

Hope this helps! :)

7 0
2 years ago
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