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zlopas [31]
2 years ago
11

I meant is -99 rational or irrational?

Mathematics
2 answers:
otez555 [7]2 years ago
5 0

Answer:

rational

Step-by-step explanation:

irrational number is number with infinite number behind the dot

ex: 1.111111111111....1111....1111(infinite number 1) is irraltional number

diamong [38]2 years ago
3 0

-99 is rational because we can write it as -99/1

A rational number is any number that can be written as a fraction, or ratio, of two whole numbers. The denominator cannot be zero.

Any integer or whole number is rational due to the fact we can just stick it over 1 to form a fraction. The reverse is not true. For example, the fraction 2/3 is rational but it's not a whole number.

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If one three-digit number ( 0 cannot be a left digit) is chosen at random from all those that can be made from the following set
Oksana_A [137]

The probability of choosing a number that is not a multiple of 2 is P = 0.44

<h3 /><h3>How to find the probability?</h3>

We need to count the number of options for each digit.

  • For the first digit, we have 8 options {1, 2, 3, 4, 5, 6, 7, 8}
  • For the second digit, we have 9 options {0 ,1, 2, 3, 4, 5, 6, 7, 8}
  • For the third digit, we have 9 options {0 ,1, 2, 3, 4, 5, 6, 7, 8}.

The total number of combinations is the product between the numbers of options:

C = 8*9*9 = 648

If we want our number to not be a multiple of 2 then it must end in a odd digit, the combinations that meet that condition are:

  • For the first digit, we have 8 options {1, 2, 3, 4, 5, 6, 7, 8}
  • For the second digit, we have 9 options {0 ,1, 2, 3, 4, 5, 6, 7, 8}
  • For the third digit, we have 4 options {1, 3,  5, 7}.

C = 8*9*4 = 288

Then the probability of selecting a 3 digit number that is not a multiple of 2 is:

P = 288/648 = 0.44

If you want to learn more about probability, you can read:

brainly.com/question/251701

8 0
2 years ago
Matt is showing his work in simplifying (6.2 − 1.6) − 4.4 + 7.8. Identify any error in his work or reasoning.
shusha [124]
Start with the parentheses first

4.6 -4.4+7.8 then calculate from left to right
= 0.2+7.8 = 8
6 0
2 years ago
1. A bag contains rubber bands with lengths that are normally distributed with a mean of 6 cm of length, and a standard deviatio
romanna [79]
Roughly 1.7 percent of the bands are shorter than 3cm. We calculate the z score of the data point in standard distribution. By definition of z score, we use score minus mean divided by standard deviation. z=(3-6)/1.5=-2. A z score of -2 corresponds to approximately 1.7%, in other words, roughly 1.7 percent of data is less than 3cm.
4 0
3 years ago
H(a) = 2a +4<br> g(a) = 4a + 2<br> Find (h+g)(a)
hjlf

Answer:

8−4 a

Step-by-step explanation:

x=g(h(a−4))

h(a−4)=−2(a−4)−5 = −2 a+8−5=3−2 a

Apply g.

g(h(a−4))=g(3−2a)=2(3-2a)+2=6−4a+2

3 0
2 years ago
Read 2 more answers
Find the value of this fraction 6 x 1/2 + 2/3 + 3/4 ​
kodGreya [7K]

Answer:

\frac{53}{12} or 4 \frac{5}{12}

Step-by-step explanation:

\frac{6}{1}  \times  \frac{1}{2}  = 3

\frac{3}{1}  +  \frac{2}{3}  +  \frac{3}{4}  = ...

Find the common denominator, which is 12

\frac{36}{12}  +  \frac{8}{12}  +  \frac{9}{12}  =

Now add them

\frac{36}{12}   +  \frac{8}{12}  =  \frac{44}{12}  +  \frac{9}{12}  =  \frac{53}{12}

Simplified version is

4 \frac{5}{12}

3 0
3 years ago
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