How to solve 2t + 9.4 = 39.8

2 answers:

6 0

First subtract 9.4 on both side so you get 2t=30.4 then divide the 2 on both side to get the variable by it self and you get t=15.2

sergejj [24]2 years ago

4 0

2t+9.4=39.8
2t=39.8-9.4
2t=30.4
t=30.4/2=15.2

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castortr0y [4]

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3 years ago

If a number is chosen at random from the set {1, 2, 3, 4, . . ., 18}, what is the probability that the number chosen is a factor

choli [55]

Looking at the set, we are given 18 elements. 17 is prime; it has only two factors: 1 and 17, since 1•17=17. So, the question is really asking what is the probability the numbers 1 or 17 is chosen. As mentioned earlier, 17 is prime, so there are two possible choices: 1 and 17.

P (probability) = possible outcomes / total outcomes

It is important to note that these events are “or” events, meaning that the probability can only be determined by choosing a 1 or a 17; you can’t randomly chose a 1 and 17 at the same time. So, the formula is:

P(A or B) = P(A) + P(B)

All this is saying is that given two possible outcomes, the probability occurs independent of each event; they don’t occur at the same time.

P(1 or 17) = P(1)/18 + P(1)/18

P(1 or 17) = 2/18

Since 17 is prime, it’s two and only factors are 1 and 17. The probability of randomly choosing a 1 or 17 is 2/18, meaning that there are 2 elements in the set out of a possible 18 elements that can be randomly chosen.

2/18 simplifies to 1/9

So, your answer is 1/9

5 0

2 years ago

How do you divide 4/3 by 1.5

bixtya [17]

Answer:

0.9

Step-by-step explanation:

4/3 by 1.5

to divide 4/3, we have to convert it to decimal too

so 4/3 = 1.333 repeatedly

4/3 by 1.5=1.333/1.5

0.8886