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
storchak [24]
3 years ago
8

3(x-1)=4(1+x)+5 what is the value of X

Mathematics
1 answer:
bogdanovich [222]3 years ago
7 0
3(x-1)=4(1+x)+5
3x-3=4+4x+5
3x-3=4x+9
-3x     -3x
-3=x+9
-9    -9
-12=x
You might be interested in
A newsgroup is interested in constructing a 90% confidence interval for the proportion of all Americans who are in favor of a ne
Leto [7]

Answer:

The 90% confidence interval for the proportion of all Americans who are in favor of a new Green initiative is (0.6247, 0.6923).

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 z-score that has a p-value of 1 - \frac{\alpha}{2}.

Of the 533 randomly selected Americans surveyed, 351 were in favor of the initiative.

This means that n = 533, \pi = \frac{351}{533} = 0.6585

90% confidence level

So \alpha = 0.1, z is the value of Z that has a p-value of 1 - \frac{0.1}{2} = 0.95, so Z = 1.645.

The lower limit of this interval is:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.6585 - 1.645\sqrt{\frac{0.6585*0.3415}{533}} = 0.6247

The upper limit of this interval is:

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.6585 + 1.645\sqrt{\frac{0.6585*0.3415}{533}} = 0.6923

The 90% confidence interval for the proportion of all Americans who are in favor of a new Green initiative is (0.6247, 0.6923).

6 0
3 years ago
Chrissy wants to spend at most $45 on dinner. If she bought an entree for $20 and she wants to buy mini appetizers for $3 each,
Sever21 [200]

Answer:

Step-by-step explanation:

Chrissy can buy 8 mini appetizers.......because

45 - 20 = 25

25 divide 3 = 8.3333333333333 so the most she can buy is 8..

:)

8 0
3 years ago
two parallel lines are graphed on a coordinate plane.how many of the lines could represent proportional relationship?Explain.
soldi70 [24.7K]

It's not necessary that either one represents a proportional
relationship.  But if either one does, then the other one doesn't. 
They can't both represent such a relationship.

The graph of a proportional relationship must go through
the origin.  If one of a pair of parallel lines goes through
the origin, then the other one doesn't. (If two parallel lines
both went through the origin, then they would both be the
same line.)

7 0
3 years ago
Read 2 more answers
Maths problem
Fudgin [204]

Answer:

250 x 3 = 750g

750g is your final answer

7 0
2 years ago
Read 2 more answers
Help with it all, don't understand this
Ganezh [65]
Number 3 it is a factor because if u expand you will see that x+6 will be the answer
5 0
3 years ago
Other questions:
  • How to solve -2x > 14
    11·1 answer
  • Is this a proportion 7/9=21/36
    13·2 answers
  • The data set below shows the number of books checked out from a library during the first two weeks of the month: 99, 29, 30, 42,
    8·1 answer
  • A research article reports the results of a new drug test. The drug is to be used to decrease vision loss in people with Macular
    13·1 answer
  • No time is thinking of a six digit number in which all the digits are the same the value of the digit in the thousands place is
    14·1 answer
  • Please help!! Will mark brainliest!!
    14·1 answer
  • A spider is trying to climb a wall that is 15 metres high. In each hour, it climbs up 3 metres, but falls back 2 metres. In how
    15·1 answer
  • 8 meters are in how many feet? Round your answer to the nearest tenth
    15·2 answers
  • Can anyone tell me how 1164÷8 = 145.5? I don't get it ​
    5·2 answers
  • Help me with my math
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!