All categories

4 years ago

Simplify the expression : l-8l + l8l

Mathematics

1 answer:

NikAS [45]4 years ago

6 0

16 it will be a positive number because it's the opposite of |-8| but it was -|8| then it would be a neg number

You might be interested in

Legalize Marijuana, Part II. As discussed in Exercise 6.12, the 2010 General Social Survey reported a sample where about 48% of

kvv77 [185]

Answer:

Around 2397 Americans must be surveyed to get a margin of error of 2%.

Step-by-step explanation:

We are given the following in the question:

Proportion of US residents who thinks marijuana should be made legal = 48%

$\hat{p} = 0.48$

We have to construct a 95% confidence interval.

Margin of error = 2% = 0.02

Formula for margin of error =

$z_{stat}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}$

$z_{critical}\text{ at}~\alpha_{0.05} = 1.96$

Putting values, we get,

$0.02 = 1.96\times \sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}\\\\0.02 = 1.96\times \sqrt{\dfrac{0.48(1-0.48)}{n}}\\\\\sqrt{n} = 1.96\times \dfrac{\sqrt{0.48(1-0.48)}}{0.02}\\\\\sqrt{n}=48.96\\n = 2397.0816\approx 2397$

Thus, around 2397 Americans must be surveyed to get a margin of error of 2%.

8 0

3 years ago

9^6 * 9^3 = <br><br><br> Give the answer in exponent form

Andrews [41]

Step-by-step explanation:

1,983593e11

5 0

3 years ago

Read 2 more answers

6ε−2(7+3ε)>5(2ε−3)−ε<br> solve the inequality

monitta

Answer:

Step-by-step explanation:

I'll use x instead of epsilon. It's easier to type.

6x-2(7+3x) > 5(2x-3)-x

6x-14-6x > 10x-15-x

-14 > 9x-15

1 > 9x

⅑ > x

x < ⅑

4 0

3 years ago

Find the perimeter of the following figure:

Cerrena [4.2K]

Answer:

Step-by-step explanation:

8a+24

8 0

3 years ago

Are rational numbers always, sometimes or never natural numbers?

Delvig [45]

Rational numbers are sometimes natural numbers. For example, the number 1 is both a rational and natural number. Remember that natural numbers are 1, 2, 3, 4.. etc. Rational numbers are any number that can be expressed as a ratio of 2 integers. 1/1 is rational.

Most rational numbers, however, are not natural. For example, 3/4, 89/88, and so on.

4 0

4 years ago