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IgorLugansk [536]
4 years ago
12

Choose the correct simplification of the expression (3x − 6)(2x2 − 4x − 5).

Mathematics
2 answers:
zavuch27 [327]4 years ago
8 0
The answer is C:  6x^3 - 24x^2 + 9x + 30
Deffense [45]4 years ago
8 0

Answer:

Option 3rd is correct

6x^3-24x^2+9x+30

Step-by-step explanation:

Given the expression:

(3x-6)(2x^2-4x-5)

Multiply the first term of the first expression with second expression and second term of the first expression with second expression we have;

3x(2x^2-4x-5)-6(2x^2-4x-5)

using distributive property we have;

6x^3-12x^2-15x-12x^2+24x+30

Combine like terms we have;

6x^3-24x^2+9x+30

therefore,  the correct simplification of the given expression is, 6x^3-24x^2+9x+30

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Convert this number expressed in standard form to scientific notation
Sergeu [11.5K]

Answer:

28,500,000 into scientific notation is 2.85 x 10⁷

2.85 x 100 in scientific notation is 2.85 x 10²

if you mean the multiplication symbol, it just means to multiply. otherwise, there i don't see an x anywhere else

6 0
4 years ago
How many solutions does this equation have? How do you know?<br><br> 8x +14 - 4x = 9 + 4x - 5
MAVERICK [17]

Answer:

no solutions.

Step-by-step explanation:

8x + 14 -4x = 9+4x -5

8x-4x -4x = 9-5-14

0x = -10

anything multiplied by 0 is 0, so it's impossible to get -10 by multiplying by 0

5 0
3 years ago
What is the surface area
Drupady [299]
<span>The outside part or uppermost layer of something (often used when describing its texture, form, or extent).</span>
8 0
3 years ago
100 points if you show how you got the answer!
ludmilkaskok [199]

First, simplify each one.

9.98 x 10^6 = 9980000

7.3 x 10^7 = 73000000

Next, subtract the freight from the aircraft

73000000 - 9980000 = 63020000

Round the decimal point to the first significant digit, and place the amount of place values the decimal point moved to the left as a power sign, over 10.

63020000 = 6.302 x 10^7

6.302 x 10^7 is your answer

hope this helps

8 0
3 years ago
Read 2 more answers
Which percent is equivalent to 0.3?<br> A. 0.003%<br> B. 0.03%<br> C. 3%<br> D. 30%
Kitty [74]

Answer:

D, 30%

Step-by-step explanation:

you move the decimal point twice to the right

8 0
3 years ago
Read 2 more answers
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