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Ket [755]
3 years ago
13

Which property justifies the fact that 5(x-2) is equivalent to 5x-10

Mathematics
2 answers:
irina1246 [14]3 years ago
7 0
The property that justifies this equivalence is the distributive property. you disribute by multiplying 5 and x to get 5x and 5 times negative 2 to get negative 10
Mazyrski [523]3 years ago
4 0
Hey there! :D

The distributive property is what makes 5(x-2) to 5x-10

The distributive property states that a(b+c)= ab+ac

So, 5(x-2)= 5x-10

I hope this helps!
~kaikers
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Use the distributive property to remove the parentheses.<br> -5(-6y+4x-5)
Vitek1552 [10]

Answer:

Distributive property means to multiply the number outside the parentheses to the numbers & variables inside the parentheses.

-5(-6y+4x-5)

= 30y-20x+25

8 0
3 years ago
A rectangle has a a width of 9 inches the area is 648 inches what is the length of the rectangle
yuradex [85]
The formula for a rectangle is length*width=area. Since we know the area and the width, we plug it in to the formula, we get length*9=648. 
l*9=648 is equivalent to l=648/9. Now we solve <span>l=648/9 and get l=72. SO the width is 72 inches. </span>
5 0
3 years ago
How do I find the difference -6 - (-9) <br> Pls explain how I can do negatives and positives numbers
d1i1m1o1n [39]

Answer:

Step-by-step explanation:

-6 - (-9)

1) Remove parentheses

-6 + 9

2) Simplify

3

See attachted image for rules of positive and negative integers.

Source: YourDictionary

5 0
2 years ago
The measures of two supplementary angles are (4x + 8) and (6x + 3)º.
Illusion [34]

Step-by-step explanation:

A supplementary angle is an angle that is 180 degrees. We are given two angles that add up to 180, but we need to solve for x first.

The first step is to solve both angles. We know that both angles added together are supplementary, so they are equal to 180.

4x + 8 = unknown angle

6x + 3 = unknown angle

(4x + 8) + (6x + 3) = 180

Because we know a supplementary angle is 180 degrees, we can solve for x to find both angles.

Solve for x.

(4x + 8) + (6x + 3) = 180

10x + 11 = 180

10x = 169

x = 16.9

Now, we know the value of x, so we plug in x for both angles to determine which angle is smaller.

4x + 8

4(16.9) + 8

67.6 + 8 = 75.6 degrees

and the other angle

6x + 3

6(16.9) + 3

101.4 + 3 = 104.4 degrees

Now we know that the smaller angle is 75.6 degrees.

Also, to make sure the math is correct, when plugging in both numbers after finding x, they should add to 180.

75.6 + 104.4 = 180 so we know they are supplementary for sure.

Good luck!

7 0
3 years ago
Read 2 more answers
Find a set of parametric equations of the line with the given characteristics. (Enter your answer as a comma-separated list of e
emmainna [20.7K]

This question is incomplete, the complete question is;

Find a set of parametric equations of the line with the given characteristics. (Enter your answer as a comma-separated list of equations in terms of x, y, z, and t.) The line passes through the point (3, 1, 2) and is parallel to the line given by x  = y = z.

Answer:

the set of parametric equations of the line with the given characteristics are; x = t+3, y = t+1, z = t+2

Step-by-step explanation:

Given that;

line x = y = z and point ( 3, 1, 2 )

the given line can be written as;

[x-0 / 1] = [y-0 / 1] = [z-0 / 1]

if two lines are parallel directional ratios are equal.

so DIRECTIONAL RATIOS  of given line is ( 1, 1, 1 )

therefore required line is;

[x-3 / 1] = [y-1 / 1] = [z-2 / 1] = t

⇒ [x-3 / 1] = t

x = t+3

[y-1 / 1] = t

y = t+1

[z-2 / 1] = t

z = t+2

Therefore the set of parametric equations of the line with the given characteristics are; x = t+3, y = t+1, z = t+2

8 0
3 years ago
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