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3 years ago

What is the slope and Y intercept of the equation y= 2x-4

Mathematics

1 answer:

PilotLPTM [1.2K]3 years ago

6 0

Answer:

-4

Step-by-step explanation:

y=mx+b

mx= slope

b= y-intercept

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Suppose speeds of vehicles traveling on a highway have an unknown distribution with mean 63 and standard deviation 4 miles per h

Mashutka [201]

Answer:

The standard deviation for the sample mean distribution=0.603

Step-by-step explanation:

We are given that

Mean, $\mu=63$

Standard deviation, $\sigma=4$

n=44

We have to find the standard deviation for the sample mean distribution using Central Limit Theorem for Means.

Standard deviation for the sample mean distribution

$\sigma_x=\frac{\sigma}{\sqrt{n}}$

Using the formula

$\sigma_x=\frac{4}{\sqrt{44}}$

$\sigma_x=\frac{4}{\sqrt{2\times 2\times 11}}$

$\sigma_x=\frac{4}{2\sqrt{11}}$

$\sigma_x=\frac{2}{\sqrt{11}}$

$\sigma_x=0.603$

Hence, the standard deviation for the sample mean distribution=0.603

6 0

2 years ago

Solve and factorise x^2-8x+16=0

goblinko [34]

Answer:

x=4x therefore the answer is 4x

Step-by-step explanation:

x^2-8x+16=0

7 0

3 years ago

The perimeter of a rectangle is 96 feet, and the width is 22 feet. What is the length

timama [110]

Answer:

Step-by-step explanation:

22+22= 44

96-44=52

52 devided by 2=26

Hope that helps:)

3 0

2 years ago

The area of the top of the rectangle table is 323 square feet. If the length of the table is19 feet what is the width of the tab

Anit [1.1K]

A=lw, right? So you would take what you know, 323 being a and 19 being l. 323=19w
Divide both sides by 19 leaving you with
323/19=w
17 feet=w

6 0

3 years ago

?????????????? help out

dimaraw [331]

Answer:

20 degrees C

Step-by-step explanation:

You would substitute the F with 68 since it is 68 degrees F. Then you would solve the equation. (Subtract 32 from 68=36; multiply 36 by 5/9=20)

5 0

3 years ago