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3 years ago

Tom is digging a pool in the shape of a rectangular prism. He plans to make the pool

Mathematics

1 answer:

denis23 [38]3 years ago

5 0

The other answer here is a scam, please don’t click on it.

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Using the distributive property, Marta multiplied the binomial (2x + 3) by the trinomial (x2 + x – 2) and got the expression bel

densk [106]

Marta got the expression

$2x\cdot x^2 + 2x\cdot x + 2x\cdot (-2) + 3\cdot x^2 + 3\cdot x + 3\cdot (-2).$

First, note that

$2x\cdot x^2=2x^3,\\2x\cdot x=2x^2,\\2x\cdot (-2)=-4x,\\3\cdot x^2=3x^2,\\ 3\cdot x=3x,\\3\cdot (-2)=-6.$

Then add terms with the same degree:

$2x^2+3x^2=5x^2,\\-4x+3x=-x.$

At last,

$(2x+3)(x^2 + x - 2)=2x^3+5x^2-x-6.$

Answer: correct choice is C.

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3 years ago

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Ne4ueva [31]

Answer:

4100 workers

Step-by-step explanation:

8 0

3 years ago

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!!please answer quickly and correctly!!

Valentin [98]

Large=40 pounds

small=30 pounds

and this is the solution

3 0

3 years ago

Thanos is convinced that (x+y+3)^2=x^2+y^2+9. Explain why he is incorrect. Draw a box diagram to prove your statement.

adoni [48]

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4 years ago

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Function Operations Picture attached

sergeinik [125]

Answer: Second option

Step-by-step explanation:

You need to make the multiplication of the function $c(x)=\frac{5}{x-2}$ and the function $d(x)=x+3$ . Then:

$(cd)(x)=(\frac{5}{x-2})(x+3)$

You need to apply the Distributive property:

$(cd)(x)=\frac{5(x+3)}{x-2}\\\\(cd)(x)=\frac{5x+15}{x-2}$

Therefore, the domain will be all the number that make the denominator equal to zero.

Then, make the denominator equal to zero and solve for x:

$x-2=0\\x=2$

Therefore, the domain is: All real values of x except $x=2$

6 0

3 years ago