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3 years ago

What is the diameter of a human hair written in scientific notation? Plz explain! Thanks! :D

Mathematics

1 answer:

Anestetic [448]3 years ago

4 0

The diameter of human hair is 8.0 x 10^-6
hope this helps :)

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The sum of a number n and 9 is greater than 20.

Serhud [2]

Answer:

Step-by-step explanation:

n + 9 > 20

n > 20 - 9

n > 11

7 0

3 years ago

You have an ant farm with 31 ants. The population of ants in your farm will double every 3 months. The table shows the populatio

Evgesh-ka [11]

Answer:

I think the table is linear. The total amount after one year is 248 ants.

Step-by-step explanation:

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2 years ago

The critical value t* gets larger as the confidence level increases. True or false?

posledela

Answer:

We can find the critical value $t_{\alpha/2}$

And for this case if the confidence increase the critical value increase so then this statement is True

Step-by-step explanation:

For a confidence level given c, we can find the significance level like this:

$\alpha=1 -c$

And with the degrees of freedom given by:

$df=n-1$

We can find the critical value $t_{\alpha/2}$

And for this case if the confidence increase the critical value increase so then this statement is True

5 0

3 years ago

NEED HELP ASAP! Subtract. (4x^2+8x−2)−(2x^2−4x+3) Answer in standard form

AlekseyPX

$(4x^2+8x-2)-(2x^2-4x+3)\\\\=4x^2+8x-2-2x^2+4x-3\\\\=(4x^2-2x^2)+(8x+4x)+(-2-3)\\\\=\boxed{2x^2+12x-5}$

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3 years ago

2. Three points of a parallelogram are (4, 3), (-4, 3), and (2, 3). Find the coordinates of the 4th point to complete the parall

antiseptic1488 [7]

Parallelograms have equal and parallel opposite sides

The coordinates of the 4th point is (-2,3)

Let the parallelogram be ABCD, such that:

$A = (4,3)$

$B =(-4,3)$

$C = (2,3)$

A and B have the same y-coordinates, while their x-coordinates are additive inverse

This means that:

The y-coordinates of point C and point D will be the same, while their x-coordinates will be additive inverse.

For point C

We have:

$x = 2$

$y = 3$

For point D

The coordinates would be:

$x =- 2$

$y = 3$

Hence, the coordinates of D is (-2,3)