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posledela
3 years ago
10

Equivalent expression for (a −7 ⋅b −2 ) −9 =?.

Mathematics
1 answer:
maksim [4K]3 years ago
7 0
I’m not sure sorry I tryed to help
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It is 1 and one half.
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Denise spent 45.24 for 3 pairs of shoes. What was the average cost per pair?
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In a recent​ year, an author wrote 171 checks. Use the Poisson distribution to find the probability​ that, on a randomly selecte
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Answer: 0.3741

Step-by-step explanation:

Poison probability ;

P(x) = [U(^x) e(^-U)] ÷ x!

Where U = mean

Note: e = exponential symbol

Number of checks that year = 171

Number of days in a year = 365

U = 171/365 = 0.468

Average checks per day = 0.4685

Probability that at least one check was written per day is can be calculated by;

P(not 0) = 1 - P(0)

Therefore,

P(x) = [U(^x) e(^-U)] ÷ x!

P(0) = [ 0.4685^0 * e^-0.4685] ÷ 0!

P(0) = [ 1 * 0.6259] ÷ 1

P(0) = 0.6259

Therefore,

P(not 0) = 1 - 0.6259 = 0.3741

4 0
3 years ago
When we take a census . We attempt to collect data from a. A stratified random sample b. Every individual chosen in a simple ran
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Max was on vacation twice as long as Jerrad and half as long as Wesley. The boys were on vacation a total three weeks. How long
mote1985 [20]
3 weeks = 21 days
Let Jerrad's vacation be X then Max's be 2X and Wesley's 4X
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5 0
3 years ago
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