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Finger [1]
1 year ago
6

Select the example which illustrates the distributive property of 7 × 39

Mathematics
2 answers:
Maru [420]1 year ago
6 0
It would be the 4th answer. It is the only choice that shows the 7 being distributed onto the 30 and 9 and it still gives you the right answer
Lemur [1.5K]1 year ago
3 0

Answer:

d) 7(30 + 9) = 7(30) + 7(9)

Step-by-step explanation:

<u>Distributive method</u>:

  • a(b + c) = ab + ac

<u>Here given</u>:

  • 7 × 39

Among the option's:

<u>1st option</u> (7 + 3) (7 + 9) is wrong, changes <u>final answer</u>.

<u>2nd option</u> (7 × 30) + 9 is wrong, changes <u>final answer</u>.

3rd option 39 × 7 shows commutative property of multiplication.

<u>4th option</u> show distributive method.

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Find the slope that passes thru (3,5) and (5,8)
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Read 2 more answers
Can somebody please help m eits 9th grade math im so confused !
prisoha [69]

Answer:

Option 3: (5, 1)

Step-by-step explanation:

There are several ways of solving for systems of linear equations, either through graphing, substitution, or elimination.  

The graphing method is the easiest, as you only need to plot points on the graph using the y-intercepts and the slopes.  

I will be demonstrating the <u>graphing method</u>.  

Given the systems of linear equations:  

Equation 1:  y = x - 4

where the <u>slope</u>, <em>m</em> = 1, and <u>y-intercept </u>(0, -4).

Equation2: y = -x + 6

where the <u>slope</u>, <em>m </em>= -1, and <u>y-intercept</u> (0, 6).

The y-intercept is the point on the graph where it crosses the y-axis, and has coordinates of (0, b).

<h3>Graphing Instructions:</h3>

For Equation 1, plot the y-intercept, (0, -4) on the graph. Then use the <u>slope</u>, m = 1 (rise 1 unit, run 1 unit) to plot other points on the graph. Repeat this process until you have enough points to connect a line with.  

Repeat these same procedures for graphing Equation 2, start by plotting its y-intercept at (0, 6), and its slope, m = -1 (down 1 unit, run 1 unit).

<h3>Solution: </h3>

The intersection of both lines occurs at point, (5, 1), which is solution to the given systems of linear equations.  Therefore, the correct answer is the third option, (5, 1).

Attached is the screenshot of the graphed systems of linear equations, where it shows the point of intersection at (5, 1).  

5 0
3 years ago
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