All categories

3 years ago

|-3 + 15| what is the sum (answer) ? I think it is 12 but my friend thinks it is 18. Who is right?

Mathematics

2 answers:

Vsevolod [243]3 years ago

5 0

Nooo -3+15=-12 but since it's absolute value it is 12

Aliun [14]3 years ago

4 0

I do believe it is 12 as well considering the fact that it's negative three and not positive. If it was a positive three then maybe it would be 18.

You might be interested in

This is the question

vesna_86 [32]

Hey there!

The answers to your question are C, D, and E

If there are repeats in the X column, then it's not a function. If there are no repeats, then it is! If there are repeats in the Y column, that's ok, but there cannot be repeats in the X column.

Hope this helps! If you need any other help, just tell me!

6 0

3 years ago

Car rental company chargers it’s customers an initial fee of 30$ plus daily charge of 25$ to rent a car . Jacob has a budget of

nignag [31]

Answer:

Jacob can rent a car for 6 days with $20 left to spare.

Step-by-step explanation:

200 - 30 = 170

170 / 25 = 6.8

25 * 6 = 150

170 - 150 = 20

6 0

3 years ago

Read 2 more answers

The ratio of length to width in a rectangle is 3 to 1. If the perimeter of the rectangle is 120 feet, what is the length of the

ipn [44]

Answer:

a = length

b = height(width)

a=3b

2(a+b)=120

2(b+3b)=2(4b)=8b

8b=120

b=15

a=45

length is 45 feet

width is 15 feet

4 0

2 years ago

What basic multiplication fact can help you divide 18÷3?

Temka [501]

D is the answer

18/3= 6

and 6*3= 18

I hope this helps!

6 0

3 years ago

Read 2 more answers

34 packages are randomly selected from packages received by a parcel service. The sample has a mean weight of 25.9 pounds and a

Vlad1618 [11]

Answer:

24.6 < μ < 27.2

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1-0.95}{2} = 0.025$

Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$ .

So it is z with a pvalue of $1-0.025 = 0.975$ , so $z = 1.96$

Now, find the margin of error M as such

$M = z*\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

$M = 1.96\frac{3.8}{\sqrt{34}} = 1.3$

The lower end of the interval is the sample mean subtracted by M. So it is 25.9 - 1.3 = 24.6 pounds.

The upper end of the interval is the sample mean added to M. So it is 25.9 + 1.3 = 27.2 pounds.

So the correct answer is:

24.6 < μ < 27.2

4 0

2 years ago