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3 years ago

11

Select the statement that correctly describes the solution to this system of equations.

1 answer:

jasenka [17]3 years ago

7 0

Selection C is appropriate.

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8) A committee has fifteen members. There are two members that currently serve as the board’s chairman and vice chairman. Each m

pickupchik [31]

Answer:

The probability is $P(Z) = 0.0064$

Step-by-step explanation:

From the question we are told that

The number of members is n = 15

Generally the number of ways of selecting two member from the fifteen members is mathematically represented as

$K = ^{n}C_2 * 2!$

Here C stands for combination hence we will be making use of the combination functionality in our calculator

$K = ^{15}C_2 * 2 * 1$

=> $K = 78 * 2 * 1$

=> $K = 156$

Gnerally the number of outcome that matches the outcome required by the committee(Which is reselecting the member who where the chairman and vice chairman of the board ) is m = 1

Generally the probability of randomly selecting the two members who currently hold the positions of chairman and vice chairman and assigning them to their current positions is mathematically represented as

$P(Z) = \frac{m}{K}$

=> $P(Z) = \frac{1}{156}$

=> $P(Z) = \frac{1}{156}$

=> $P(Z) = 0.0064$

5 0

3 years ago

Plz help its late !?!?

stealth61 [152]

Answer:

A

Their slopes are negative reciprocals

7 0

3 years ago

Suppose Julio is a veterinarian who is doing research into the weight of domestic cats in his city. He collects information on 1

fomenos

Answer:

Estimate of the standard error of the mean = 0.38 lb

Step-by-step explanation:

We are given the following in the question:

Sample mean, $\bar{x}$ = 10.87 lb

Sample size, n = 131

Standard deviation, σ = 4.31 lb

We have ti find the estimate of the standard error of the mean.

Formula for standard error:

$S.E= \dfrac{\sigma}{\sqrt{n}}$

Putting values, we get,

$S.E = \dfrac{4.31}{\sqrt{131}} = 0.3766 \approx 0.38$

0.38 lb is the standard error of the mean.

7 0

3 years ago

8) plsss helpp meeee!!

konstantin123 [22]

Answer:

$\sqrt[n]{x^a}=x^{a/n}$

Step-by-step explanation:

While the "law"

$\sqrt[n]{x^n}=x$

may seem more applicable, and may seem to be a special case of the law shown in the answer above, it is not true in general. For example, ...

$\sqrt{x^2}=|x|\ne x \quad\text{for x $$

6 0

4 years ago

You have decided to cash in all of the coins you have been saving for the summer. In total you have $7.20. You only have dimes a

muminat

Answer:

The number of quarters in total = 16 quarters

The number dimes = 32 dimes

Step-by-step explanation:

The given information are;

The total amount of money in held = $7.20

The denomination of the money held = Dimes and quarters

The number dimes = 2 × The number of quarters

Given that a dime = 10 cents = $0.1

A dollar = 25 cents = $0.25

Let the number of quarters in the sum of money = X

Therefore, we have;

X × $0.25 + 2 × X × $0.1 = $7.20

X × $0.25 + X × $0.2 = $7.20

X × $0.45 = $7.20

X = $7.20/$0.45 = 16

Therefore, the number of quarters = 16

The number of quarters in total = 16 quarters

The number dimes = 2 × The number of quarters = 2 × 16 = 32 dimes

The number dimes = 32 dimes.

8 0

3 years ago