All categories

3 years ago

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Mathematics

2 answers:

Ugo [173]3 years ago

8 0

Answer:

Step-by-step explanation:

fomenos3 years ago

3 0

Answer:

the 3rd one

Step-by-step explanation:

you need to estimate how long the graph is

You might be interested in

In a sample of 700 gas stations, the mean price for regular gasoline at the pump was $2.894 per gallon and the standard deviati

frez [133]

Answer:

$P(x < 2.892) = 4.36\%$

Step-by-step explanation:

Given

$N = 700$ --- Population

$\mu = 2.894$ -- Mean

$\sigma = 0.009$ --- Standard deviation

$n = 55$ -- Sample

Required: $P(x < 2.892)$

This question will be solved using the finite correction factor

First, calculated the z score

$z = \frac{x - \mu}{\sqrt{\frac{N -n}{N -1}} * \frac{\sigma}{\sqrt n}}$

$z = \frac{2.892 - 2.894}{\sqrt{\frac{700 -55}{700 -1}} * \frac{0.009}{\sqrt {55}}}$

$z = \frac{-0.002}{\sqrt{\frac{645}{699}} * \frac{0.009}{7.42}}$

$z = \frac{-0.002}{\sqrt{0.92} * \frac{0.009}{7.42}}$

$z = \frac{-0.002}{0.95917 * 0.0012129}$

$z = -1.71$

So:

$P(x < 2.892) = P(z < -1.71)$

Using z table

$P(x < 2.892) = 0.043633$

$P(x < 2.892) = 4.36\%$

3 0

3 years ago

Find the rate of change and initial value. Y=mx+b

tekilochka [14]

Y= 4/5 x + 24
To find the rate of change you find the difference in each of the numbers on the graph. For example, 36-32 is 4. So 28-4 is 24 and that would be the next number down. It would also match x to be 0 because since the rate of change for x was 5, if you subtract 5 from 5 you get 0. So from this we know that the coordinates would be 0,5.
From this info, the slope would be 4/5 and the y intercept or initial value would be 24

4 0

3 years ago

Solve for k<br> 4k - 6 1<br> 3k - 9 = 3

spin [16.1K]

Add nine to both sides then divide by 3 and K=4

7 0

3 years ago

Read 2 more answers

Write the equation of the circle with radius 2 and center (2,-3).

lozanna [386]

Answer:

x^2 + y^2 - 4x + 6y - 3 = 0

Step-by-step explanation:

(x-a)^2 + (y-b)^2 = r^2 is the equation of a circle which has center point (a,b) and radius r.

So in this question (2,-3) is the center and r=4.

Then we can write the equation as,

(x-2)^2 + (y+3)^2 = 16

x^2 + y^2 - 4x + 6y - 3 = 0

That is the Equation of the circle.

4 0

4 years ago

Which number sentence is true?

aliya0001 [1]

The answer is A) 1,73<2,1

3 0

3 years ago