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3 years ago

Use the distributive property to find an expression that is equivalent to 2x(x + 7)-(3x +1)

Mathematics

1 answer:

zaharov [31]3 years ago

7 0

Given expression:

2x(x + 7)-(3x +1);

To distribute implies to spread a process equally in an expression. Often times, the distributive property is used for expressions inside parentheses;

2x(x + 7)-(3x +1)

Distribute 2x over the first parentheses;

the negative sign distributes over the second part

= (2x² + 14x) - 3x -1

= 2x² + 14x -3x -1

Add like terms;

= 2x² + 11x -1

This expression 2x² + 11x -1 is equal to the given one

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frutty [35]

So for this you need to find 15% of 60. There are a few ways to do this but I prefer to do it like this.

First, find 10% of 60. This can be found by dividing 60 by 10, because 100%/10% is 10.

This gives 10%=6

5% is half of 10%, so divide your answer for 10% (6), by 2.

This gives 5%=3

We needed 15%, so we add our 10% and 5% together, to get 9.

15% of 60 is 9, meaning there are 9 puppies.

Hope this helps!

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snow_tiger [21]

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Step-by-step explanation:

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lianna [129]

Answer:

answer is -3

Step-by-step explanation:

we know -,+ is -. so minus, plus is minus(here minus and plus are the signs given. opposite signs give minus wheras same signs give plus)

so, first we should subtract 7 minus 4 is 3,.

then we should insert the minus because the greater number has the minus sign. ( you should always insert a sign of a greater number after substituting)

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sergij07 [2.7K]

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