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spayn [35]
3 years ago
12

Subtract and write in standard form(8x – 6x3 + 5x2) - (2x2 + 2x - 7x3)​

Mathematics
1 answer:
Leno4ka [110]3 years ago
4 0

Answer:

  x^3 +3x^2 +6x

Step-by-step explanation:

Eliminate parentheses using the distributive property. Collect terms. Standard form has the exponents decreasing.

  = 8x -6x^3 +5x^2 -2x^2 -2x +7x^3

  = x^3(-6 +7) +x^2(5 -2) +x(8 -2)

  = x^3 +3x^2 +6x

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3 years ago
What are the solutions to the equation |3x-15|=0?
ozzi

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4 0
3 years ago
Molly invested $50,000 in various stocks
fgiga [73]

Answer:

  $10,000

Step-by-step explanation:

Let b represent the amount invested in bonds. Then 50,000 - b wil be the amount invested in stocks. Molly's total return is ...

  0.15b + 0.18(50000-b) = 8700

  -0.03b +9000 = 8700 . . . . simplify

  300 = 0.03b . . . . . . . . . . . . add .03b-8700

  10,000 = b . . . . . . . . . . . . . divide by 0.03

Molly invested $10,000 in bonds.

3 0
3 years ago
Which ordered pair is a solution to the system of inequalities?
salantis [7]

Answer:

i think its b

Step-by-step explanation:

8 0
3 years ago
What is the surface area of a cube that has a side length of 8 mm? Use the formula is S A = 6 s squared, where SA is the surface
zhenek [66]

Answer:

Surface area of a cube = 384 mm²

Step-by-step explanation:

Surface area of a cube = 6 s²

Where

s = side length of the cube

s = 8 mm

Surface area of a cube = 6 s²

= 6 * 8²

= 6 * 64

= 384 mm²

Surface area of a cube = 384 mm²

5 0
3 years ago
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