Joe has some pocket money. He spends 90% of it. He has 50p left. How much pocket money did he have?
2 answers:
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Answer:
Step-by-step explanation:
Factor this the "old fashoined" way. In our polynomial, which is a quadratic,
a = 1, b = -14, c = -32
a * c --> 1 * -32 = -32
The factors of 32:
1, 32
2, 16
4, 8
The only 2 factors that combine to give us our b value of -14 are 2 and 16, as long as we make the 16 negative. 16 + 2 = -14. Filling in to rewrite our quadratic,
Now group them together in groups of 2:
Out of the first set of parenthesis we can factor out an x, and out of the second set of parenthesis we can factor out a 2:
What's common now is the (x - 16) which can be factored out, leaving us with
(x - 16)(x + 2)
That means that
x = 16 and x = -2
Answer:
0.0337 = 3.37% probability that a particular death is due to an automobile accident
Step-by-step explanation:
A probability is the number of desired outcomes divided by the number of total outcomes.
What is the probability that a particular death is due to an automobile accident?
Total of 1008 deaths.
34 resulted from an automobile accident. So
0.0337 = 3.37% probability that a particular death is due to an automobile accident