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marishachu [46]
3 years ago
8

Which property justifies the statement below x(y-3)=xy-3x

Mathematics
2 answers:
erastova [34]3 years ago
7 0

the distributive property

a(b + c ) = ab + ac

Apply this property to the given expression

x(y - 3 ) = xy - 3x


BaLLatris [955]3 years ago
3 0

For this case we have that, by definition, the distributive property states that the multiplication of a number by a sum is equal to the sum of the multiplications of that number by each of the addends, that is:

a (b + c) = ab + ac

Thus, it is observed that the property applied was the distributive property ,

x(y-3)=xy-3x

Answer:

Distributive property


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Which expression is a factor of 12x2 + 29x – 8?
stira [4]
12x^2 + 29x – 8 \\ \\ 12x^2 + 32x - 3x - 8 \\ \\ 4x (3x + 8) - (3x + 8) \\ \\ (3x + 8)(4x - 1) \\ \\

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Read 2 more answers
Simplify to create an equivalent expression.
Elis [28]

You would use PEMDAS so that means you would start by multiplying 3 with the parentheses 3(2+6d) on both sides then you would combine like terms so you would add 18d+18d. Then you would subtract 6- -5 on both sides then solve for a one-step equation

3(2+6d)-5=3(2+6d)-5
6+18d-5=6+18d-5
6+36d-5=6-5
1+36d=1
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36d/36. 0/30
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3 years ago
Apen cost 20php each, if you buy more than 10pens you will be given 50percent discount on the next pens you're about to buy. mak
vredina [299]

Cost of pen = 20x  when x< 10

                              and

                      =10x when x>10

Let the number of pens bought be x.

So the total pen cost is 20x when the number of the pen is less than 10.

Now let's take that the number of pens bought is more than 10

So the pen will cost a 50% discount  

    50% of 20x

  = 20/100 × 20x

  = 10x

So the cost of the pen will be 10x when the number of the pen is greater than 10.

From this, we get to know that

Cost of pen = 20x when x<10

                              and

                       = 10x when x>10

To know more about the cost and prices refer to the link given below:

brainly.com/question/28280938

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1 year ago
HELPP! Calculate S22 for the arithmetic sequence in which a12=2.4 and the common difference is d=3.4
Sonbull [250]

Answer:

S22 for the arithmetic sequence is:

First option: 15.4

Step-by-step explanation:

a12=2.4

d=3.4

S22=?

Sn=(a1+an)n/2

n=22

S22=(a1+a22)22/2

S22=(a1+a22)11


ak=aj+(k-j)d

a12=a1+(12-1)d

2.4=a1+11(3.4)

2.4=a1+37.4

Solving for a1: Subtracting 37.4 both sides of the equation:

2.4-37.4=a1+37.4-37.4

Subtracting:

-35=a1

a1=-35


a22=a12+(22-12)d

a22=2.4+10(3.4)

a22=2.4+34

a22=36.4


S22=(a1+a22)11

S22=(-35+36.4)11

S22=(1.4)11

S22=15.4

3 0
3 years ago
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