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3 years ago

11

Jarvis is planning a birthday party for his little brother. He buys 10 toy cars for $3 each and 10 chocolates for $1 each to be

given as party favors. The store gives him a discount of $2.
What percent discount did the store give Jarvis?

1 answer:

Flauer [41]3 years ago

8 0

They gave him a 40% discount.

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The winning baseball team scores 4 times as many runs as its opponent. The winning team scores 8 runs. Write an equation with an

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4x+8=x

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Given the functions k(x) = 2x2 − 7 and p(x) = x − 4, find (k ∘ p)(x). (k ∘ p)(x) = 2x2 − 8x + 16 (k ∘ p)(x) = 2x2 − 16x + 32 (k

Anuta_ua [19.1K]

Answer:

<h2>(k ∘ p)(x) = 2x² - 16x + 25</h2>

Step-by-step explanation:

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To find (k ∘ p)(x) substitute p(x) into k(x),

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(k ∘ p)(x) = 2(x - 4)² - 7

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Simplify

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<h3>(k ∘ p)(x) = 2x² - 16x + 25</h3>

Hope this helps you

3 0

3 years ago

1. a) What is the area of this square with sides of 5x4y²?

UNO [17]

Area=?
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3 years ago

Forty-four percent of customers who visit a department store make a purchase. What is the probability that in a random sample of

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Answer:

A. .1070

Step-by-step explanation:

For each customer, there are only two possible outcomes. Either they make a purchase, or they do not. The probability of a customer making a purchase is independent from other customers. So we use the binomial probability distribution to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

In which $C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

And p is the probability of X happening.

Forty-four percent of customers who visit a department store make a purchase.

This means that $p = 0.44$

What is the probability that in a random sample of 9 customers who will visit this department store, exactly 6 will make a purchase?

This is $P(X = 6)$ when n = 9. So

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

$P(X = 6) = C_{9,6}.(0.44)^{6}.(0.56)^{3} = 0.1070$

So the correct answer is:

A. .1070

8 0

3 years ago

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