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mars1129 [50]
3 years ago
11

Which equation is equivalent to (2x^2+4x-7)(x-3)

Mathematics
1 answer:
Rasek [7]3 years ago
5 0

Answer:

2 x^3 - 2 x^2 - 19 x + 21

Step-by-step explanation:

Expand the following:

(2 x^2 + 4 x - 7) (x - 3)

Hint: | Multiply out (x - 3) (2 x^2 + 4 x - 7).

| | 2 x^2 | + | 4 x | - | 7

| | | | x | - | 3

| | -6 x^2 | - | 12 x | + | 21

2 x^3 | + | 4 x^2 | - | 7 x | + | 0

2 x^3 | - | 2 x^2 | - | 19 x | + | 21:

Answer: 2 x^3 - 2 x^2 - 19 x + 21

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12 feet

Step-by-step explanation:

60/6 = 12

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A castle is surrounded by a circular moat which is 5 m wide
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Answer:

  1414 kL

Step-by-step explanation:

The volume of the donut-shaped moat is the product of its surface area and depth. The area is the product of its centerline length and its width.

<h3>Moat area</h3>

The diameter of the centerline of the moat is (50 m -5 m) = 45 m. The length of that centerline is ...

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The volume is the product of the area and the depth of the moat:

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The volume of the moat is about 1414 kL.

5 0
1 year ago
Identify the location of the point (-3, -2).<br><br> A. P<br> B. Q<br> C. R<br> D. S
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2 years ago
How to do this question plz ​
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Answer:

the answer is 17.60

Step-by-step explanation:

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3 years ago
The ordered pairs (1, 1), (2, 8), (3, 27), (4, 64), and (5, 125) represent a function. What is a rule that represents this funct
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Hmm

2 times 4=8
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1 times 1=1
2 times 4=8
3 times 9=27

aka
1 times 1^2=1
2 times 2^2=8
3 times 3^2=27
x times x^2=x^3

the rule is y=x^3

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3 years ago
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