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Lynna [10]
3 years ago
7

How many terms are in the expression shown below? a2 - ab + 8b + b2 - 1 2 3 4 5

Mathematics
1 answer:
siniylev [52]3 years ago
6 0
A² - ab + 8b + b² - 1

There are 5 terms in the expression. 
a² = 1st term
ab = 2nd term
8b = 3rd term
b² = 4th term
1 = 5th term

Each term is separated by a plus (+) sign or a minus (-) sign.

A term is either a number, a variable, or a number and a variable multiplied together.

a², ab, b² are variables.
8b is a number and a variable multiplied together
1 is a number.
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Answer:

p = 0.38, n = 20

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Step-by-step explanation:

Binomial distribution function is represented by

P(X = x) = ⁿCₓ pˣ qⁿ⁻ˣ

n = total number of sample spaces = number of times Jack wants to bowl = 20

x = Number of successes required = number of strikes he intends to get

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q = probability of failure = probability that Jack doesn't throw a strike = 0.62

P(X > x) = Σ ⁿCₓ pˣ qⁿ⁻ˣ (summing from x+1 to n)

P(X > 10) = Σ ²⁰Cₓ pˣ qⁿ⁻ˣ (summing from 11 to 20)

P(X > 10) = [P(X=11) + P(X=12) + P(X=13) + P(X=14) + P(X=15) + P(X=16) + P(X=17) + P(X=18) + P(X=19) + P(X=20)

P(X > 10) = 0.09233

There are binomial distribution cacalculators that can calculate all of this at once. Get one to minimize errors.

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