All categories

3 years ago

11. Describe and correct the error in evaluating the expression. –21-7)= -14

Mathematics

1 answer:

likoan [24]3 years ago

8 0

Answer: -28

Step-by-step explanation:

You might be interested in

Assume the readings on thermometers are normally distributed with a mean of 0degreesC and a standard deviation of 1.00degreesC.

Nat2105 [25]

Answer:

$P(-2.05$

And we can find this probability with this difference

$P(-2.05$

And we can see the figure in the plot attached.

Step-by-step explanation:

Let X the random variable that represent the redings on thermometers of a population, and for this case we know the distribution for X is given by:

$X \sim N(0,1)$

Where $\mu=0$ and $\sigma=1$

We are interested on this probability

$P(-2.05$

We can use the z score formula given by:

$z=\frac{x-\mu}{\sigma}$

Using this formula we got:

$P(-2.05$

And we can find this probability with this difference

$P(-2.05$

And we can see the figure in the plot attached.

5 0

4 years ago

A box has dimensions of 15 inches long, 3.1 feet wide, and 7 inches high. What is the volume of the box? The formula for the vol

riadik2000 [5.3K]

The answer choices are in cubic inches, so convert the dimension that is given as feet into inches.

1 foot = 12 inches, so multiply 3.1 feet by 12:

3.1 x 12 = 37.2 inches.

Now multiply the three dimensions to find the volume:

15 x 37.2 x 7 = 3,906 in^3

5 0

4 years ago

Read 2 more answers

Find the slope of the line that passes through (4,2) and (4,5)

Hunter-Best [27]

Answer: Undefined

Step-by-step explanation:

(slope = m)

$m=\frac{y_2-y_1}{x_2-x_1}=\frac{5-2}{4-4}=\frac{3}{0}$

(3 divided by 0 is undefined, so the slope is undefined)

4 0

3 years ago

Determine the complement of 55.6%

Helen [10]

The answer is 44.4 hope that helps

5 0

3 years ago

I know this question is easy, but I don’t really know how to do it? Help? If possible put a quick explanation, it’s fine if not!

lorasvet [3.4K]

Answer:

She left $10.62 the total was $58.87

Hope this helps :)

3 0

3 years ago