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3 years ago

PLZ HELP

Mathematics

1 answer:

maria [59]3 years ago

5 0

Answer:

Step-by-step explanation:

Following changes will be there when the figure is transformed by the given rules.

1). Rule for transformation has been given as,

(x, y) → (x, -y)

Reflection across x axis.

2). (x, y) → (-x, -y)

Rotation of 180° about the origin.

3). (x, y) → (x - 4, y)

Shifted 4 units left horizontally.

4). (x, y) → (x, y + 3)

Shifted vertically up by 3 units

5). (x, y) → (x - 1, y + 4)

Shifted 1 units left horizontally and 4 units up vertically.

6). (x, y) → (4x, 4y)

Dilated by 4 units.

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A safety officer wants to prove that μ = the average speed of cars driven by a school is less than 25 mph. Suppose that a random

Akimi4 [234]

Answer:

$t=\frac{24-25}{\frac{2.2}{\sqrt{14}}}=-1.70$

The degrees of freedom are given by:

$df=n-1=14-1=13$

The p value for this case would be given by:

$p_v =P(t_{(13)}$

Step-by-step explanation:

Information given

$\bar X=24$ represent the mean height for the sample

$s=2.2$ represent the sample standard deviation

$n=14$ sample size

$\mu_o =25$ represent the value that we want to test

t would represent the statistic

$p_v$ represent the p value for the test

Hypothesis to verify

We want to cehck if the true mean is lees than 25 mph, the system of hypothesis would be:

Null hypothesis: $\mu \geq 25$

Alternative hypothesis: $\mu < 25$

The statistic would be given by:

$t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}}$ (1)

Replacing the info given we got:

$t=\frac{24-25}{\frac{2.2}{\sqrt{14}}}=-1.70$

The degrees of freedom are given by:

$df=n-1=14-1=13$

The p value for this case would be given by:

$p_v =P(t_{(13)}$

8 0

3 years ago

A total of 636 tickets were sold for the school play. They were either adult tickets or student tickets. There were 64 fewer stu

NARA [144]

Five hudred sixty two. 562

7 0

3 years ago

|3x - 9| = 12 <br> Show all steps please and thank you!

bezimeni [28]

Answer:

ayy I gotchuu

Step-by-step explanation:

theres gonna be two solutions

a negative then positive

positive:

|3x - 9| = 12

3x-9=12

3x=21

x=7

negative:

3x-9=-12

3x=-3

x=-1

4 0

3 years ago

Read 2 more answers

The sum of 6 consecutive integers is 519. What is the third sequence?

Elenna [48]

Answer:

X=84

Step-by-step explanation:

let x be the first integer, then

x + (x+1) + (x+2) + (x+3) + (x+4) + (x+5) = 519

6x + 15 = 519

6x = 504

x = 84

4 0

3 years ago

If 4more than 3 time a number is 7 what is the number

statuscvo [17]

Answer:

the number is 1

Step-by-step explanation:

Your equation to solve is:

4 +3x = 7

move the four

4 + 3x = 7

-4 -4

3x = 3

x = 1

7 0

2 years ago