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4 years ago

URGENT I WILL MARK BRANLIEST

Mathematics

1 answer:

Monica [59]4 years ago

3 0

Answer:

P = 10y + 4

Step-by-step explanation:

P = 2L + 2W

P = 2(4y) + 2(y + 2)

P = 8y + 2y + 4

P = 10y + 4

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Yall please help meee

madam [21]

Answer-

x=0;y=3

x=1;y=-1

x=2;y=-5

x=3;y=-9

7 0

3 years ago

What is the mean in 74,75,80,76,75,81,78?

Alina [70]

Answer:

Step-by-step explanation:

Add the numbers together, then divide them to how much numbers are there.

74 + 75 + 80 + 76 + 75 + 81 + 78 = 539

Since there are 7 numbers, you divide 539 by 7.

539/7 = 77

6 0

3 years ago

A stationary store has decided to accept a large shipment of ball-point pens if an inspection of 17 randomly selected pens yield

Leno4ka [110]

Answer:

0.762 = 76.2% probability that this shipment is accepted

Step-by-step explanation:

For each pen, there are only two possible outcomes. Either it is defective, or it is not. The probability of a pen being defective is independent from other pens. 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.

17 randomly selected pens

This means that $n = 17$

(a) Find the probability that this shipment is accepted if 10% of the total shipment is defective. (Use 3 decimal places.)

This is $P(X \leq 2)$ when $p = 0.1$ . So

$P(X \leq 2) = P(X = 0) + P(X = 1) + P(X = 2)$

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

$P(X = 0) = C_{17,0}.(0.1)^{0}.(0.9)^{17} = 0.167$

$P(X = 1) = C_{17,1}.(0.1)^{1}.(0.9)^{16} = 0.315$

$P(X = 2) = C_{17,2}.(0.1)^{2}.(0.9)^{15} = 0.280$

$P(X \leq 2) = P(X = 0) + P(X = 1) + P(X = 2) = 0.167 + 0.315 + 0.280 = 0.762$

0.762 = 76.2% probability that this shipment is accepted

8 0

4 years ago

Plz awnser :) but explain i actually wanna know how to do this. long division, 1300÷15=?

chubhunter [2.5K]

(Divide) 1,300÷15=86.6666666667

6 0

4 years ago

Does anyone know the answer to this , its math inequalities <br><br> 48 > -6x

faltersainse [42]

Answer:

$x > - 8$

Step-by-step explanation:

Swap the sides of the inequality and flip the inequality sign:

$- 6x < 48$

Divide both side of the inequality by -6 and flip the inequality sign:

$x > - 8$

3 0

3 years ago

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