Im not sure what it is asking me to do

Mathematics

2 answers:

timofeeve [1]3 years ago

6 0

Answer:

Step-by-step explanation:

$p(x \leqslant 0) = p( - 5) + p( - 3) + p( - 2) + p(0)$

$= 0.17 + 0.13 + 0.33 + 0.16$

$= 0.79$

Hope this helps...

Best regards!!

soldi70 [24.7K]3 years ago

3 0

Answer: the probability that x is smaller or equal to 0 is 0.79

Explanation:

Find the probability that x is smaller or equal to 0

In the table the number that are smaller or equal to 0 are -5,-3,-2,0

And we are given the probability of each number

So all you have to do is add all the probability of the number that are smaller or equal to 0:

0.17 + 0.13 + 0.33 + 0.16 = P
0.79 = P

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Ed is 7 years older than Ted. Ed’s age is also 3/4 times Ted’s age. How old are Ed and Ted?

svetlana [45]

Let Ted be x.

Ed is 7 years older = x + 7

Ed = (3/4)Ted

(x + 7) = (3/4)x

x + 7 = 3x/4

x - 3x/4 = -7

x/4 = -7

x = -28, Ted = -28 years.

(x + 7) = -28 + 7 = -21, Ed = -21 years

Goodness. We had negative numbers for the ages, well does that make sense? No it doesn't.

Our answer is correct. But the sense in the question is lacking. The question has been wrongly set.

<span>We might assume negative ages to mean before they came into the world, before birth! </span>

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