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VMariaS [17]
1 year ago
8

Use the associative property write an equivalent expression. (5 + 7) + x =

Mathematics
1 answer:
Firdavs [7]1 year ago
6 0
<h3>Answer:</h3>

5+(7+x)

<h3>Step-by-step explanation:</h3>

Finding an Equivalent Expression

The associative property of addition states that you can move the terms that are inside the parentheses and still have the expression remain true. So, in the answer above, I moved 5 out of the parentheses and x into the parentheses. No matter the value of x the value of the expression will remain the same

Examples and Proof

Another example of the associative property could be (1+6)+3 = 1+(6+3). To prove this statement we can evaluate each side of the expression.

First, let's do (1+6)+3

  • (1+6)+3
  • (7)+3
  • 10

Next, let's do 1+(6+3)

  • 1+(6+3)
  • 1+(9)
  • 10

As you can see both of these expressions are the same, thus proving that the associative property works in this situation.

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3 years ago
Write an equation of the line that passes through (-1,4) and is perpendicular to the line shown.
tatuchka [14]

Answer:

<h3>  y= -3/4x - 4</h3>

Step-by-step explanation:

To write an equation that is perpendicular to a given line, take the negative reciprocal of the given slope. the given slope is 4/3, so the negative reciprocal is -3/4.

Using slope-intercept form of a linear equation, y=mx+b substitute in -3/4 for "m" the slope.

y=-3/4x+b

Now you need to "b" the y-intercept using the given point (-4,-1). Substitute the values in the equation. -1=-3/4(-4)+b simplify

                           -1= 3 + b    subtract 3 for both sides

                           -4=b

         substitue -4 for b.   Now you have    y= -3/4x - 4    this is your answer.

5 0
2 years ago
Pls help this is due in 2mins
worty [1.4K]

Answer:

45 dimes

Step-by-step explanation:

66 nickels = 66 x $0.5 = $3.30

$7.80 - $3.30 = $4.50

$4.50 / $0.10 = 45

4 0
3 years ago
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