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Ostrovityanka [42]
3 years ago
6

What is the value of the expression below when x = -5 and y = -10 |3x - y| +4

Mathematics
1 answer:
Oksanka [162]3 years ago
7 0

Answer:

-1 is your answer for this mate

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The owner of a small deli is trying to decide whether to discontinue selling magazines. He suspects that only 10% of his custome
Rainbow [258]

Answer:

0.55% probability that exactly 5 out of the first 13 customers buy a magazine

Step-by-step explanation:

For each customer, there are only two possible outcomes. Either they buy a magazine, or they do not. The probability of a customer buying a magazine is independent of 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.

10% of his customers buy a magazine

This means that P = 0.1

What is the probability that exactly 5 out of the first 13 customers buy a magazine?

This is P(X = 5) when n = 13. So

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

P(X = 5) = C_{13,5}.(0.1)^{5}.(0.9)^{8} = 0.0055

0.55% probability that exactly 5 out of the first 13 customers buy a magazine

3 0
3 years ago
Read 2 more answers
-y&gt;2x solving linear inequalities<br><img src="https://tex.z-dn.net/?f=%20-%20y%20%20%5Cgeqslant%202x%20%20%20%20" id="TexFor
topjm [15]
Im sorry i just wanna get points

6 0
3 years ago
Cameron opens a checking account and a savings account at his local bank. He deposits $10,000 into his checking account and $2,0
Xelga [282]
The wording "earns 8% interest each year" does not make it clear whether the savings account interest is compounded. (It usually is in real life, but not always in math problems.) The graphical solution shows both simple interest and interest compounded annually.

Simple interest: the balances will both be $2941.18 after 5.88 years.

Compound interest: the balances will both be $3111.06 after 5.74 years.

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3 years ago
A family went to a restaurant for dinner. The subtotal for the meal including tax is $65.90. The family decided to leave a 20% t
maxonik [38]

Answer:

$79.08

Step-by-step explanation:

Find 20% of 65.90. 20% as a decimal is 0.20. Multiply 0.2 and 65.90.

65.90 x 0.20 = 13.18

Add 13.18 to the original price.

13.18 + 65.90 = 79.08

6 0
2 years ago
Curtis threw darts at a dartboard. 40% of his darts hit the bulls-eye, If 6 darts hit the bulls-eye,how many did not hit the bul
I am Lyosha [343]

Answer:

its 9

the other ans is scam :))))))

8 0
3 years ago
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