All categories

3 years ago

3x-7y=-28 Need help solving the question

1 answer:

7 0

P.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px 'Helvetica Neue'; color: #454545} p.p2 {margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px 'Helvetica Neue'; color: #454545; min-height: 14.0px}

Simplifying

3x + 7y = 28

Solving

3x + 7y = 28

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-7y' to each side of the equation.

3x + 7y + -7y = 28 + -7y

Combine like terms: 7y + -7y = 0

3x + 0 = 28 + -7y

3x = 28 + -7y

Divide each side by '3'.

x = 9.333333333 + -2.333333333y

Simplifying

x = 9.333333333 + -2.333333333y

You might be interested in

drake picks 8 gallons of pecans. He sells the pecans at his produce stand in 1/3 pound bags. how many bags of pecans did drake s

Igoryamba

List the four types of organic macromolecules. Provide specific molecular examples of each.

3 0

2 years ago

17 points Please help me with the answer and understanding

kodGreya [7K]

Because the graph is starting high and going down, your answer is c- exponential decay

3 0

2 years ago

Read 2 more answers

Which number line represtents the solution to |x+4|=2?

vlada-n [284]

Answer:

Points -2 and -6 on the number line are the two solutions.

Step-by-step explanation:

Use the definition of absolute value as a starting point

$|x|=x\,\,\mbox{for}\,\,x\geq 0\\|x|=-x\,\,\mbox{for}\,\,x$

To solve the equation, you need to treat the two cases as above:

$|x+4|=x+4=2\,\,\,\mbox{for}\,\,x+4\geq 0\implies x\geq -4\\x+4=2\implies x=-2$

The solution x=-2 is consistent with the condition x>=-4, so it is the first and valid solution. Now the second case of the absolute value:

$|x+4|=-(x+4)=2\,\,\,\mbox{for}\,\,x+4< 0\implies x$

Again, the second solution -6 complies with the requirement that x<-4, so it is valid.

7 0

2 years ago

Solve the inequality for x: -3(2x+5) < -45

balandron [24]

Answer:

x>5

Step-by-step explanation:

-3(2x+5)<-45

2x+5<-45/-3

2x+5<15

2x<15-5

2x<10

x<10/2

x<5

x>5

7 0

3 years ago

Solve: x/x+2 + 5/x-3 = 25/x2-x-6

Paraphin [41]

Answer:

x1=3 x2=-5

BUT x1=3 is not an answer because it doesnt respects the range on the original ecuation, so x2=-5 is the solution

Step-by-step explanation:

6 0

2 years ago