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
Harman [31]
2 years ago
12

Which represents the solution to the absolute value equation? 312x + 4 - 1 = 11

Mathematics
2 answers:
algol [13]2 years ago
7 0

Answer:

x= 0 and x = -4

Step-by-step explanation:

The first step for absolute value equations is to isolate the expression contained within the absolute value bars:

3|2 x+4|-1 = 11

3|2 x+4| = 12

|2 x+4| = 4

So |2 x+4| is 4 units away from 0 on a number line, but we don't know in which direction -- negative or positive? you'll have two answers.

2 x+4 = 4

AND

2 x+4 = -4

Solve both of those two step equations and you'll get

So 0 and -4 are your solutions

Nataly_w [17]2 years ago
4 0

Answer:

the last one

Step-by-step explanation:

absolute value signs means that it can be positive or negative if this helps please put brainliest

You might be interested in
Please help whit ratio
Damm [24]

Answer: 12 tigers

Step-by-step explanation:

Since the ratio of lions to tigers is 1:3, meaning that for every one lions there three tigers and there's 4 lions and for every one lion there 3 tigers so we need to mulitpy 4 by 3

4×3=12 meaning there 12 tigets in the zoo.

6 0
2 years ago
Read 2 more answers
84/120 equivalent fraction
julia-pushkina [17]

Answer:

7/10

this should work

Step-by-step explanation:

5 0
2 years ago
Danna wants to make an egg salad. she found a recipe that calls for 4 eggs and it serves 6 people. if she wants to make the egg
sdas [7]
Two eggs serve three people, and to get 15 people you multiply by five, so you multiply two eggs by five giving you ten eggs. You'll need 10 eggs to serve 15 people.
6 0
3 years ago
A random sample of 20 items is selected from a population. When computing a confidence interval for the population mean, what nu
kumpel [21]

Answer:

For this case since the sample size is lower than 30 , n =20<30, is not appropiate use the normal standard distribution to calculate the confidence interval for the mean, and then for this case is better use the t distribution since takes in count the correction factor to approximate the distribution of the true parameter.

The confidence interval for the mean is given by the following formula:

\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}   (1)

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

\bar X represent the sample mean for the sample  

\mu population mean (variable of interest)

s represent the sample standard deviation

n represent the sample size  

Solution to the problem

For this case since the sample size is lower than 30 , n =20<30, is not appropiate use the normal standard distribution to calculate the confidence interval for the mean, and then for this case is better use the t distribution since takes in count the correction factor to approximate the distribution of the true parameter.

The confidence interval for the mean is given by the following formula:

\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}   (1)

8 0
3 years ago
Mark cycles from home to school at a speed of 16 kilometers per hour. He cycles back on the
katrin [286]

Answer:

Write a time equation, time = dist/speed

:

go time + return time = total time

d%2F16 + d%2F15 = 7.75 hrs

multiply equation by the least common multiple 240, cncel the denominators:

 

15d + 16d = 240(7.75)

31d = 1860

d = 1860/31

d = 60 km one way

total dist = 120 km

:

Check this, find the actual time each way

60/16 = 3.75 hrs

60/15 = 4 hrs

-----------------

total time 7.75 hrs

Step-by-step explanation:

7 0
2 years ago
Other questions:
  • Show that in any group of people, two of them have the same number of friends in the group. (Some important assumptions here: no
    9·1 answer
  • What is 23490*8773737?
    9·2 answers
  • What is the distance between each pair of points?
    6·1 answer
  • Farmer and Taylor formed a partnership with capital contributions of 240000 and 290000 respectively their partnership agreement
    7·1 answer
  • Can someone help me out pls.
    14·1 answer
  • Cuánto es mínimo común múltiplo de 87 y 69​
    12·1 answer
  • Express X^2-8x+5 in the for (x-a)^2-b where a and b are integers
    6·1 answer
  • Consider function f.
    6·1 answer
  • Jake noted that speed of light is approximately 1.1 x 10^9 km/h;
    13·1 answer
  • Y= x + 6<br>y= -x+2<br><br>solve each system of equations by substitution
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!