1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
jeyben [28]
3 years ago
5

What is the solution set for [-x]=10

Mathematics
1 answer:
Lesechka [4]3 years ago
6 0
X = -10

Because it is the "absolute value" of "10"

Here's why

-X - 10 = 0, right ?

So, now we have to add a positive 10 to each of our sides to get one step closer to our answer

-X + 10 = 0 ⬅️cancel this
0 + 10 = 10 ⬅️keep this

We can multiply by a negative 1 (-1 )

10(-1) = -10
0(-1) = -0

So that's how we found out that X = -10
You might be interested in
14 less than 8 times a number is 3 more than 4 times the number what is the number?
Anestetic [448]

Answer:

12

Step-by-step explanation:

8.x-13=3+4.x

8.x-13=7.x

x-13+8=7.x

x-5=7.x

x-x=7+5

x-x=12

x=12

3 0
3 years ago
A researcher would like to estimate p, the proportion of U.S. adults who support recognizing civil unions between gay or lesbian
Minchanka [31]

Answer:

Question 1:

(b) 4,445

Question 2:

(c) 2.1%

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}.

The margin of error is of:

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

95% confidence level

So \alpha = 0.05, z is the value of Z that has a pvalue of 1 - \frac{0.05}{2} = 0.975, so Z = 1.96.

Question 1:

We have no previous estimate for the population proportion, so we use \pi = 0.5.

The sample size is n for which M = 0.015. So

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

0.015 = 1.96\sqrt{\frac{0.5*0.5}{n}}

0.015\sqrt{n} = 1.96*0.5

\sqrt{n} = \frac{1.96*0.5}{0.015}

(\sqrt{n})^2 = (\frac{1.96*0.5}{0.015})^2

n = 4268

Samples above this value should be used, and the smaller sample above this value is of 4445, so the answer is given by option b.

Question 2:

Now we find M for which n = 2222.

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

M = 1.96\sqrt{\frac{0.5*0.5}{2222}}

M = 0.021

So 2.1%, and the correct answer is given by option c.

3 0
2 years ago
65% of what number is 78? <br><br> Quick
SOVA2 [1]

Answer:

The answer is 120.

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
Can someone helpppp
Dmitry [639]
Yes, I can help what would you like me to do
5 0
3 years ago
-3(6v-4)+6v=-2(v+3) HOW CAN I SIMPLIFY THIS
ddd [48]
Subtract 12 from each side
so it should look like this
-12v=-2v-18
now add 2v to each side
so it should look like this
-10v=-18
now divdie each side by -10
and you should get
v=9/5 or 1 4/5
8 0
3 years ago
Read 2 more answers
Other questions:
  • What is the sin, cos and tan of 270°
    5·2 answers
  • Which of the following numbers could not possibly be a​ probability? Justify your answer. 0.123 negative 0.577 0 What must be tr
    13·1 answer
  • Factories 24x^2-41x+12
    8·1 answer
  • A population of 550 rabbits is increasing by 7.5% each year. In about how many years will the population be over 1000?
    14·1 answer
  • Jeany bought 12 postcards which was twice as many postcards as joe bought. Ruth bought 3 times as many postcards as joe. How man
    5·2 answers
  • When Lily does a self-inventory, she lists her knowledge of Excel, her proficiency in bookkeeping, and her training in customer
    12·1 answer
  • Emily sent 60 texts so far this week. What is 20%of the total number of text messages she is allowed in one week
    6·1 answer
  • Valentina is choosing cutlery with which to eat dinner. There are 2 knives and 10 forks to
    10·1 answer
  • To pay for the trailer, the company took out a loan that requires Amazon Rafting to pay the bank a special payment of $8,700 in
    14·1 answer
  • The combined area of a square and a rectangle is 225 square yards. the length of the rectangle is 8 times the width of the recta
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!