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alex41 [277]
2 years ago
12

Simplify: 13x - y - y + 7y - 12x

Mathematics
1 answer:
Citrus2011 [14]2 years ago
8 0
The answer is x + 5y. You have to combine like terms
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Sam made a square sign with an area of 410 square inches.What is the approximate perimeter of the square sign?
Masteriza [31]
Are you takeing the exam to.
4 0
3 years ago
Read 2 more answers
( 1,-2), gradient = -3​
igor_vitrenko [27]

Answer:

if you are required to find the equation of a straight line use the formula y-y1= m (x-x1)

y+2=-3(x-1)

y+2=-3x+3

y= -3x+3-2

y -3x+1

hope this helps

6 0
3 years ago
Read 2 more answers
Solve. Write the solution in interval notation. -2x>-8 and -5x<20.
Novosadov [1.4K]

Answer:

The interval notation of the solution is (-4 , 4)

Step-by-step explanation:

* Let us explain a very important point in solving inequality

- When you multiply or divide an inequality by negative number we

   must reverse the symbol of the inequality

- Ex:

∵ 2 < 3

- If we multiply the both sides of the inequality by -1, then the

  inequality will be -2 < -3 and this is completely wrong, so we must

  reverse the symbol of the inequality

∴ -2 > -3

* Now let us solve the problem

∵ -2x > -8

- Divide both sides by -2 and remember to reverse the symbol of the

  inequality

∴ x < 4

∵ -5x < 20

- Divide both sides by -5 and remember to reverse the symbol of the

  inequality

∴ x > -4

- From both solutions

∴ -4 < x < 4

∴ The solution is {x : -4 < x < 4}

- Interval notation is a way of writing the solutions of inequalities

 ( , ) if x does not equal the end numbers

 [ , ] if x equals the end numbers

 [ , ) , ( , ] if x equals one of the two end numbers

* The interval notation of the solution is (-4 , 4)

4 0
3 years ago
After working 80 hours at his job, Tyshawn earned a total of $1080. How much does Tyshawn earn
bogdanovich [222]

The amount  Tyshawn earn per hour is $13.5

<h3>Ratio and proportion</h3>

Fractions are written as a ratio of two integers

If after working 80 hours at his job, Tyshawn earned a total of $1080, then;

80 hrs = $1080

In order to calculate the amount earned per hour

Amount per hour = 1080/80

Amount per hour = $13.5

Hence the amount  Tyshawn earn per hour is $13.5

Learn more on ratio here: brainly.com/question/25927869

#SPJ1

7 0
2 years ago
Solve for n.<br> n^2–15n–16=0
Fofino [41]
N =  {15   +-  root of ( 225 + 64)  } / 2
  =  {15  +-  root of 289  } / 24
  = 15 + 17 } / 2   or  { 15 -17 } /2 
 = 16  or  -1


5 0
3 years ago
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