What is 0.0000009/.03 in scientific notation?

D. Find two numbers that multiply to 36 and add to -20

miss Akunina [59]

Answer:

-18 and -2.

Step-by-step explanation:

-18 - 2 = -20

-18 * -2 = 36

4 0

3 years ago

Determine the area under the standard normal curve that lies to the right of the z-score 0.48 and to the left of the z-score 0.7

pychu [463]

Answer:

The area lies to the right of the z-score 0.48 means all the values greater than it. This can be calculated on a graphing calculator using the function normCdf, where

Lower bound = 0.48
Upper bound = 9999
Mean = 0
Standard deviation = 1

The result would be normCdf(0.48,9999,0,1) ≈ 0.315614

The area lies to the left of the z-score 0.79 means all the values less than it. This can be calculated on a graphing calculator using the function normCdf, where

Lower bound = -9999
Upper bound = 0.79
Mean = 0
Standard deviation = 1

The result would be normCdf(-9999,0.79,0,1) ≈ 0.785236

6 0

3 years ago

What does a2+b2=c2 mean ps yo you will get 20 points

Lynna [10]

That is for Geometry. So Pythagorean Theorem: a2 + b2 = c2. The Pythagorean Theorem is a formula that gives a relationship between the sides of a right triangle The Pythagorean Theorem only applies to RIGHT triangles. A RIGHT triangle is a triangle with a 90 degree angle.

6 0

3 years ago

How did you know that the number is near to another number??

andreev551 [17]

Answer:

Below,...!

Step-by-step explanation:

Okay, I think I got you!

Depending on where you have to round to (tenths, hundredths, thousandths, hundred-thousands etc,...)

You use the following algorithm

If equal to or greater then 5 than you round up

If equal to or less then 4 than you keep the number as is

Here are some examples:

Round 4.6537:

If you are told to round 4.6537 to the nearest hundredth than here's how

They tell you to round to the nearest hundredth

The hundredths place: 4.6537

So you look at the number to the right of it and follow the rules: if the number to the right of the number you are trying to round is equal to or greater than 5 you round up, if equal to or less then 4 you leave the number as is.

3 is less than 4 so you leave the number you are rounding as is shortening it to just: 4.65

Round 6.733:

Lets say you are told to round 6.733 to the nearest tenth

They tell you to round to the nearest tenth

The tenths place: 6.733

So you look at the number to the right of it and follow the rules: if the number to the right of the number you are trying to round is equal to or greater than 5 you round up, if equal to or less then 4 you leave the number as is.

3 is less than 4 so you leave the number you are rounding as is shortening it to just: 6.7

Round 54.9019

Lets say you are told to round 54.9019 to the nearest thousandth

They tell you to round to the nearest thousandth

The thousandths place: 54.9019

So you look at the number to the right of it and follow the rules: if the number to the right of the number you are trying to round is equal to or greater than 5 you round up, if equal to or less then 4 you leave the number as is.

9 is greater than 5 so you round the number up: 54.902

Really hope that helped,... Chow,...!

6 0

3 years ago

Does the sample provide strong evidence that the mean weight of the bags is lower than the 35.6 grams listed on the package? Gro

kirill115 [55]

Answer:

As probability of that happening is very small; Yes, 33.6 is less than 35.6 grams because it provide strong evidence that the mean weight of the bags is lower than the 35.6 grams listed on the package.

Step-by-step explanation:

For a normal distribution Z-score

$Z = \frac{X-\mu}{\sigma}$

Given that :

the mean ( $\mu$ ) = 35.6

standard deviation ( $\sigma$ ) = 5.2

sample size (n) = 35

standard error: $\sigma_x = \frac{\sigma}{\sqrt{n}}$

$\sigma_x = \frac{5.2}{\sqrt{35}}$

$\sigma_x = 0.879$

The probability that a random sample of 35 bags has a mean weight of 33.6 grams or less is :

P(X<33.6) = P(Z < - 2.28)

= 0.0114

Conclusion:

As probability of the happening is very small; Yes, 33.6 is less than 35.6 grams because it provide strong evidence that the mean weight of the bags is lower than the 35.6 grams listed on the package.

7 0

4 years ago