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Alina [70]
3 years ago
7

Simpifly (-5x2 - 3x - 7) + (-2x3 + 6x2 - 8)

Mathematics
2 answers:
ioda3 years ago
5 0

Answer:

-2x³ + x² - 3x - 15

Step-by-step explanation:

Simply combine like terms together:

-5x² - 3x - 7 - 2x³ + 6x² - 8

-2x³ + (-5x² + 6x²) - 3x + (-7 - 8)

-2x³ + x² - 3x + (-7 - 8)

-2x³ + x² - 3x - 15

BlackZzzverrR [31]3 years ago
3 0

Answer: -2x^3+x^2-3x-15

Step-by-step explanation:

As there is only addition and subtraction here, and the two groups of parenthesis are added, you can ignore the parenthesis.

Thus, simply combine like terms to get.

-2x^3+x^2-3x-15

Hope it helps <3

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Which number sentence below matches this word problem? Two
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Answer:

12 + 9 = 21

Step-by-step explanation:

because you are finding the total they both had in September, you add. 12 + 9 = 21

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4 years ago
Choose the best definition for the following term: exponent
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The answer is B - The number or value being raised to a power

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Ms. Rao buys a computer, a printer, and a scanner for $2,543. The computer costs $1,502 more than the printer. The printer costs
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4 years ago
A laboratory animal may eat any one of three foods each day. Laboratory records show that if the animal chooses one food on one
taurus [48]

Answer:

P= \left[\begin{array}{ccc}0.5&0.25&0.25\\0.25&0.5&0.25\\0.25&0.25&0.5\end{array}\right]

Step-by-step explanation:

let a, b and c be the type of foods used in trail.

Example matrix combination for (1,1) is (a,a) is 0.5. Another Example for (1,2) is (a,b) is 0.25.

The diagonals are (a,a), (b,b) and (c,c) which means same food in two trails and its probability is 0.5. the rest would be 0.25

Therefore, stochastic matrix would have 3 by 3 matrix such as (a,a), (a,b) .... (c,c)

\left[\begin{array}{ccc}0.5&0.25&0.25\\0.25&0.5&0.25\\0.25&0.25&0.5\end{array}\right] \\

3 0
3 years ago
Solve the equation for x.<br> 9(x-3) =3(X + 8)<br> ———- ————<br> 6 13
allsm [11]

Answer:

x = 51/6 or 17/2

<u>Step-by-step explanation:</u>

9( x-3) = 3 (x + 8)

Distribute

9x - 27 = 3x + 24

Add 27 to both sides

9x = 3x + 51

Subtract 3x from both sides

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Divide both sides by 6

x = 51/6 or 17/2

3 0
3 years ago
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