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2 years ago

12

If one three-digit number (0 cannot be a left digit) is chosen at random from all those that can be made from the following set

of digits, find the probability that the one chosen is not a multiple of 5.
(0, 1, 2, 3, 4,5)

1 answer:

expeople1 [14]2 years ago

3 0

Answer:

5/25

Step-by-step explanation:

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I need help on #10

Ede4ka [16]

D = sq.root of((x2 - x1)^2 + (y2 - y1)^2)
sq.root of 13 = sq.root of((x - (-2))^2 + (1 - 3)^2)
= sq.root of((x + 2)^2 + (-2)^2)
= sq.root of (x^2 + 4x + 4 + 4)
= sq.root of (x^2 + 4x + 8)

Now if we square both sides:
x^2 + 4x + 8 = 13
x^2 + 4x - 5 = 0
(x + 5)(x - 1) = 0
x = -5 or x = 1

6 0

3 years ago

Factorizing as the Difference of Two Squares<br>1. 144x2 - 49

igor_vitrenko [27]

Answer:

Factorizing as the Difference of Two Squares

1. 144x2 - 49

Step-by-step explanation:

Where is the picture?

7 0

3 years ago

A magazine provided results from a poll of 500 adults who were asked to identify their favorite pie. Among the 500 respondents,

RoseWind [281]

Answer:

The statement that "the margin of error was given as $\pm5$ percentage points" means that the population proportion is estimated to be with a certain level of confidence, within the interval $\hat{p} \pm 0.05$ ; where $\hat{p}[tex] is the sample's proportion. The correct answer is C. The statement indicates that the interval [tex]0.14\pm0.05$ is likely to contain the true population percentage of people that prefer chocolate pie.

Step-by-step explanation:

The margin of error for proportions is given by the following formula:

$z_{\alpha /2}\times\sqrt{\frac{\hat{p}\times(1-\hat{p})}{n}}$

Where:

$z_{\alpha /2}$ is the critical value that corresponds to the confidence level; the confidence level being $1-\alpha$ ,

$\hat{p}$ is the sample's proportion of successes,

$n$ is the size of the sample.

In this exercise we have that $\hat{p}=0.14$ and that the margin of error is 0.05.

Therefore if we replace in the formula to calculate the confidence interval we get:

$\hat{p}\pm 0.05=0.14\pm0.05=(0.09, 0.19)$

Which means that the true population proportion is estimated to be, with a certain confidence level, within the interval (0.09, 0.19).

7 0

3 years ago

a polynomial function contains the Factors x,x-2,and x+5.Which graph(s)below could represent the graph of this function?

Nadya [2.5K]

Answer:

(iii)

Step-by-step explanation:

The x-intercepts of graph (iii) match the given factors.

5 0

3 years ago

Kisachek [45]

Answer:

Part A) $m=3$

Part B) $m=1$

Step-by-step explanation:

we know that

The formula to calculate the slope between two points is equal to

$m=\frac{y2-y1}{x2-x1}$

Part A) Determine the slope for the line that passes through the points (3,5) and (−1,−7)

substitute the values in the formula

$m=\frac{-7-5}{-1-3}$

$m=\frac{-12}{-4}$

$m=3$

Part B) Determine the slope for the line that passes through the points given by the table of values

Looking at the given table, take two points

(0,-5) and (2,-3)

substitute the values in the formula

$m=\frac{-3+5}{2-0}$

$m=\frac{2}{2}$

$m=1$

7 0

4 years ago