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
Svetach [21]
3 years ago
7

2 POS

Mathematics
1 answer:
Lostsunrise [7]3 years ago
4 0

Answer:

A. x=0

Step-by-step explanation:

x+20+10x=20+9x

cancel equal terms

x+10x+9x

add x to 10x

11x=9x

move variable to left

11x-9x=0

subtract 11x to 9x

2x=0

divide Both sides by 2

x=0

You might be interested in
In a recent survey of 25 voters, 17 favor a new city regulation and 8 oppose it. What is the probability that in a random sample
Rasek [7]

Answer:

P(X=2)=(6C2)(0.68)^2 (1-0.68)^{6-2}=0.0727

Step-by-step explanation:

1) Previous concepts

The binomial distribution is a "DISCRETE probability distribution that summarizes the probability that a value will take one of two independent values under a given set of parameters. The assumptions for the binomial distribution are that there is only one outcome for each trial, each trial has the same probability of success, and each trial is mutually exclusive, or independent of each other".

2) Solution to the problem

The probability in favor of the regulation based on the recent survey is:

p = \frac{17}{25}=0.68

Let X the random variable of interest "Number of favor respondents about the regulation", on this case we now that:

X \sim Binom(n=6, p=0.68)

The probability mass function for the Binomial distribution is given as:

P(X)=(nCx)(p)^x (1-p)^{n-x}

Where (nCx) means combinatory and it's given by this formula:

nCx=\frac{n!}{(n-x)! x!}

And we want to find this probability:

P(X=2)=(6C2)(0.68)^2 (1-0.68)^{6-2}=0.0727

If we use X= "Number of respondednts opposed to the regulation we got the same answer", but on this case p = 1-0.68=0.32, and we want this probability:

P(X=4)=(6C4)(0.32)^4 (1-0.32)^{6-4}=0.0727

6 0
3 years ago
I need help can y'all help please
BartSMP [9]
Your domain is all positive numbers, and your range is all numbers. this is because no matter what you plug in for y, x will only ever get extremely close to 0, but never reach it or go below it, and if you put in large values of y x will get very big. 

7 0
3 years ago
Which statement is true?
sveticcg [70]

Answer:

3rd

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
6. Dina is moving and he is going to rent a moving van. She will need it for one day. The cost of renting the van $145 for the d
Marat540 [252]

Answer:

403.75

Step-by-step explanation:

we can write the following equation

.75m+145=price

we just need to plug in 345 for m

.75*345+145=price

put this into a calculator and get 403.75

6 0
3 years ago
What is the inverse of the function f(x) = 2x – 10?
Lana71 [14]

Answer:

h(x)=\dfrac{x}{2}+5

Step-by-step explanation:

You are given the function f(x)=2x-10. To find the inverse function f^{-1}(x) do such steps:

1. Rewrite the function f(x) as

y=2x-10

2. Express x in terms of y:

y+10=2x\\ \\x=\dfrac{y}{2}+5

3. Change x into y and y into x:

y=\dfrac{x}{2}+5

Now, the inverse function is

f^{-1}(x)=\dfrac{x}{2}+5

7 0
3 years ago
Read 2 more answers
Other questions:
  • You are an urban planner assessing the growth of a city. Ten years ago, the city's population was 249,583. Its current populatio
    11·2 answers
  • What is the absolute value of -8? Use the number line to help answer the question
    13·1 answer
  • The total charge for a taxi ride in NYC includes an initial fee of $3.75 plus $1.25 for every 1/2 mike traveled . Jodi took a ta
    6·1 answer
  • Does a graph compare two variables or not
    15·1 answer
  • The temperature dropped 3 degrees per hour for a total decrease of 51 degrees for how many hours did the temperature drop
    12·1 answer
  • What are all the exact solutions of -3tan^2x+1=0? Give your answers in radians.
    13·1 answer
  • Marlene rides her bike at a rate of 16 miles per hour. The time in hours that she rides is represented by the variable t, and th
    13·2 answers
  • SOMEONW GIVE ME STEP BY STEP EQUATION I NEED TO SUBMIT THIS TONIGHT
    7·1 answer
  • 5 3/8 - 2 1/8 = (make sure you simplify the fraction)
    15·1 answer
  • 1. Which of the following segments in the triangle below is the hypotenuse? <br>A<br>B<br>C<br>D​
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!