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
Novay_Z [31]
1 year ago
6

Solve the equation.

Mathematics
1 answer:
Gelneren [198K]1 year ago
5 0

Answer:

x=-5/4 or x=9/4

Step-by-step explanation:

2 - 4x = -7

-4x = -7 - 2

-4x = -9

x = 9/4

or

2 - 4x = 7

-4x = 7-2

-4x = 5

x = -5/4

You might be interested in
What is the slope intercept equation for this graph someone answer the question pls
disa [49]

Answer:

-2,3

Step-by-step explanation:

7 0
3 years ago
A regional planner employed by a public university is studying the demographics of nine counties in the eastern region of an Atl
Brilliant_brown [7]

Answer:

Step-by-step explanation:

Hello!

Given the variables:

X₁: Median Age

X₂: Median Income

b) Considering it from a logical point of view, income changes with age, for example, the more experienced the worker is you would think he would get a better paying job than a younger worker who is just starting. Then the dependent variable will be the median income and the independent variable will be the median age.

a)  and c)

To see if there is a linear regression between the median income and median age you have to conduct a hypothesis test for the slope. If the slope is equal to zero, there is no linear regression between the two variables, if it is different to zero, there is a regression between the two of them:

H₀: β=0

H₁: β≠0

α: 0.05

t= \frac{b-\beta }{Sb} ~~t_{n-2}

The estimated regression equation for this regression ^Yi= 20.01 + 0.50X

The standard deviation for the slope is Sb= 0.11

t_{H_0}= \frac{0.50-0}{0.11} = 4.545

And the p-value for the test is 0.0022

The p-value is less than the level of significance I choose, so the decision is to reject the null hypothesis. You can conclude that there is a linear regression between these two variables.

The correlation coefficient between the median income and the median age is r= 0.87 ⇒ This means you could expect a positive and strong linear correlation between the two variables.

d)

The slope represents how much the variable Y is modified whenever the variable X increases one unit.

In this example: Is the modification of the population mean of the median income, when the median age increases one year.

5 0
3 years ago
Everything I have no clue help me!
RideAnS [48]
-x -2 I think . 3-(-5)= -2 and 2x -3x = -x
5 0
3 years ago
Which statement best explains whether △PQR is congruent to △XYZ?
slamgirl [31]
D. because PQR and XYZ are not congruent
5 0
3 years ago
A train leaves Boston at 10:20 AM and arrives in Stamford at 1:00 PM. Find the distance between the stations if the average spee
mina [271]
60 mph = 1 mile per minute
10:20 AM -> 1:00 PM = 2 hours and 40 minutes
2 hours 40 minutes = 160 minutes
Boston -> Stamford = 160 miles
4 0
3 years ago
Other questions:
  • If there was 100 birds on a nest and a killer kills one how much are left on the nest?
    7·2 answers
  • Find the value of x. 2(x-3)-17=13-3(x+2)
    15·2 answers
  • the snowstorm lasted a total of 9 hours. it snowed at a rate of 1 in per hour during the first two hours. the snow continued for
    6·2 answers
  • Nico and Tony have decided to pay for their own phone plans. Nico had to pay $100 to sign up for Verizon and is going to be char
    8·1 answer
  • Factor this problem<br> 6x^2-5x-1&gt;0
    12·1 answer
  • How many different ways can 7 people be arranged around a round table?
    10·1 answer
  • Which ordered pairs make both inequalities true? Select two options
    8·1 answer
  • An jet travels at a constant speed of 320 miles per hour. How far, in miles, will the jet travel in 15 minutes?
    10·2 answers
  • Which statement is a counterexample to the statement "If x is a prime number, then x is an odd number?"
    12·1 answer
  • I need help, if its easy to answer shame on me lol
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!