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alexdok [17]
3 years ago
11

-8.1 irrational number or rational

Mathematics
2 answers:
Luda [366]3 years ago
4 0

Answer:

Rational

Step-by-step explanation:

Because it's an actual number that you can graph where irrational would be is if it would be a number that like pie or something where it just goes on and on

PSYCHO15rus [73]3 years ago
3 0

Answer:

Rational

Step-by-step explanation:

-1.8 is a rational number. It has a terminating and non repeating decimal.

-1.8=-\frac{18}{10} =-\frac{9}{5}

Hope this helps.

As a little bonus: -8.1 would be rational for the same reason.

-8.1=-\frac{81}{10}

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Evaluate 15r -1 when r=5
alukav5142 [94]

Answer:

74

Step-by-step explanation:

You just have to substitute r with 5.

Now, the equation looks like this:

15(5)-1

Next, solve 15*5 first according to PEMDAS

And 15*5 equals 75

\frac{\left[\begin{array}{ccc}1&5\\5\\\end{array}\right] }{75}

Lastly, do 75-1 which equals 74

\frac{\left[\begin{array}{ccc}7&5\\-1\\\end{array}\right] }{74}

Therefore, 74 is your answer.

3 0
3 years ago
Help please with this math question
Svetllana [295]
If the new technology innovation improves the production by 10%, they are increasing the amount of cars made by 10%.

Originally, 120 cars were made per day.

10% of 120 is 12.

Since the amount of cars made per day was increased by 12, we can add 12 to 120 to get 132 cars made per day (as the new unit rate).

The question asks how many cars can be produced in 5 days (after the car production increase). We can get the answer by multiplying our new daily amount of cars by 5: 132 times 5.

132 times 5 = 660

So, 660 cars can be produced in the factory in 5 days.
5 0
1 year ago
Which expression is equal to 4√32 • √2<br> A. 16<br> B. 4√2<br> C. 32<br> D. 16 √2
Georgia [21]

the is c.32$&$&#&#

Step-by-step explanation:

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4 0
3 years ago
PLZ HELP <br> the expressions a[8x+7] and 4x+3.5 are equivalent. what is the value of a
kondaur [170]

Answer:

a=0.5

Step-by-step explanation:

Divide each term by  8x+ 7  and simplify.

Hope this helps :)

<em>-ilovejiminssi♡</em>

6 0
3 years ago
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PLEASE HELP ASAP!!!!! WILL GIVE BRAINLIEST!
dusya [7]
If I am not mistaken it is D.

Can I please be Brainliest?
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