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pishuonlain [190]
3 years ago
13

Complete the two- column proof

Mathematics
1 answer:
Eduardwww [97]3 years ago
7 0
<span>The correct answers are a) given; b) substitution property; c) subtraction property of equality; d) division property of equality; and e) reflexive property of equality.

Explanation<span>:
The first line of your proof just restates what was given to us; therefore the reason is "given."

Between the first step and the second step, 11x was changed to 88; this is because x=8, and we substitute that in for x. That would give us 11*8=88, with the justification being substitution.

Between the second line and third line, 88 is cancelled from the left side and the -1 becomes -89; this happens because in order to cancel a positive 88, you must subtract it from both sides. This is the subtraction property of equality.

Between the third line and fourth line, -6 is cancelled from the left side and on the right side, -89 is changed to 89/6. This happens because in order to cancel the -6 that is beside the y (which means multiplication), we must divide both sides; this is the division property of equality.

The last step is to rewrite the equation with y on the left and the answer on the right; the reflexive property allows us to do that.</span></span>
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Find the sum:(11x+3)+(x+-5)
VikaD [51]

Answer:

12−2

Step-by-step explanation:

Simplify,

(11+3)+(−5)

11+3+−5

Subtract,

11+3+−5

11−2+

Combine like terms,

11−2+

12−2

Since we can't go any further, the solution is,

12−2

6 0
3 years ago
Fill in the blanks. <br><br> sedrftgyuhihkgfndt7y
kvv77 [185]

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5 0
2 years ago
Read 2 more answers
How many solutions does this linear system have y= 1/2x+4 <br> x+2y=-8
lara [203]

Answer:

1 solution

Step-by-step explanation:

y = 1/2x + 4  

x + 2y = -8

Solve the second equation for y.

2y = -x - 8

y = -1/2x - 4

The two equations in slope-intercept form are:

y = 1/2x + 4

y = -1/2x - 4

The system consists of two lines with different slopes, so they intercept at a single point which is the solution.

Answer: 1 solution

4 0
3 years ago
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Rina8888 [55]
Solve using system of equations!
Let y=total amount of money and x=hours of overtime.
mall: y=400+15x
movies: y=360+20x
Solve! Set the equations equal to each other to find x.
400+15x=360+20x
40=5x
x=8
After 8 hours of overtime the movies would pay her more.
4 0
3 years ago
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LekaFEV [45]

Answer:

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Step-by-step explanation:

Let the number of months be x

Alligator 1 weight = 4 + 2x

Alligator 2 weight = 8 + x

  • 4 + 2x = 8 + x
  • 2x - x = 8 - 4
  • x = 4

The answer is 4 months

7 0
3 years ago
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