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
user100 [1]
3 years ago
15

Solve by substitution -4x-2y=-12 4x+8y=-24

Mathematics
1 answer:
kykrilka [37]3 years ago
5 0
I hope this helps you



-4x-2y+4x+8y= -12-24



6y= -36


y= -6



-4x-2. (-6)= -12


-4x+12= -12


-4x= -24


x=6


(6, -6)
You might be interested in
What is the equation of a line passing through (-3, 7) and having a slope of -1/5 ? A. y = -5x + 22 B. y = 5x + 22 C. y=1/5x+32/
bogdanovich [222]

Answer:

  D.  y = -1/5x +32/5

Step-by-step explanation:

The equation of the line passing through point (h, k) with slope m can be written ...

  y = m(x -h) +k

Filling in your given values, the equation is ...

  y = -1/5(x -(-3)) +7

  y = -1/5x -3/5 +7 . . . . eliminate parentheses

  y = -1/5x +32/5 . . . . . combine constants

5 0
3 years ago
A professor using an open source introductory statistics book predicts that 10% of the students will purchase a hard copy of the
Likurg_2 [28]

Answer: The professor was not accurate with his hypothesis.

Null hypothesis: P1 = 12.5%, P2 = 42.5%, P3 = 45%

The alternate hypothesis: At least one proportion of the student will differ from the others.

Step-by-step explanation: To check if the professors hypothesis were inaccurate.

What percentage of student bought a hard copy of the book.

(25 ÷ 200) × 100 = 12.5%

What percentage of the student printed it from the web.

(85 ÷ 200) × 100 = 42.5%

What percentage of the students read it online.

(90 ÷ 200) × 100 = 45%

This means that the professor was not accurate with his hypothesis. Because the proportion of student in his hypothesis was not the same in the actual.

Therefore; the null hypothesis are

P1 = 12.5%, P2 = 42.5%, P3 = 45%

The alternative hypothesis will state that at least one of the proportion will be different from the others.

5 0
3 years ago
Sales associates at an electronics store earn different commission
Katen [24]

Answer:

how am i gonna solve the equation if i cant see the actual chart?

Step-by-step explanation:

4 0
3 years ago
without factoring determine the signs of the binomial factors of each trinomial in the table below. x+3x-28
ValentinkaMS [17]
The seceded one is the answer
7 0
3 years ago
Laurie is moving a dresser with a mass of 250 kg. She does 126 J of work with a force of 14 N. How far does she move the dresser
grandymaker [24]
The main formula is E = sum Work, 
or the work is W= FxAB=E
so AB= E/F = 126/ 14 = 9m

7 0
3 years ago
Other questions:
  • Find n so that number sentence below is true and explain your answer, referencing the relevant properties of exponents
    12·1 answer
  • Chase is trying to calculate the total cost of the T-shirt that he's buying. Since it's on sale, he first found the amount of th
    13·2 answers
  • Diviseur de 63 et 67
    14·2 answers
  • Write a possible equation for a polynomial whose graph has the following horizonal intercepts. Show your work.
    15·1 answer
  • If x=3 what is the value of the expression -2x(2 x^3+3x^2-5x)
    5·1 answer
  • Suppose that Y and Z are points on the number line.
    8·1 answer
  • If f (x) = StartRoot one-half x minus 10 EndRoot + 3, which inequality can be used to find the domain of f(x)?
    9·2 answers
  • The Earth is one astronomical unit from the sun i.e.1AU= 93 million miles.The angular speed of the Earth traveling around the su
    5·1 answer
  • What is the probability of tossing 4 heads? a) 1/2 b) 1/16 c) 1/33 d) 1/4
    8·1 answer
  • Which geometric term is best described as a straight path between two
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!