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sladkih [1.3K]
3 years ago
14

Simplify –(5x3 + x2) + 4(x3 – 3x2). Show your work.

Mathematics
2 answers:
SpyIntel [72]3 years ago
8 0

Answer:

Step-by-step explanation:

-(5x³+x²)+4(x³-3x²)

=-5x³-x²+4x³-12x²

=-x³-13x²

Stella [2.4K]3 years ago
4 0

Answer:

x^3 - 13x^2.

Step-by-step explanation:

–(5x3 + x2) + 4(x3 – 3x2)  Removing the brackets:-

= -5x^3 - x^2 + 4x^3 - 12x^2

= -5x^3 + 4x^3 - x^2 - 12x^2

= x^3 - 13x^2.

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Zachary invested $130 in an account paying an interest rate of 3.6% compounded daily. Assuming no deposits or withdrawals are ma
TiliK225 [7]

Answer:

$193

Step-by-step explanation:

8 0
3 years ago
How do I simplify this? Include steps.<br> <img src="https://tex.z-dn.net/?f=%20%28%5Cfrac%7B5i%5E3t%5E4%7D%7B7%7D%29-2%20%20%20
navik [9.2K]
Simplify the following:
(5 i^3 t^4)/7 - 2
i^3 = i^2×i = (-1) i = -i:
(5×-i t^4)/7 - 2
Put each term in (5 (-i) t^4)/7 - 2 over the common denominator 7:
(5 (-i) t^4)/7 - 2 = (-5 i t^4)/7 - 14/7:
(-5 i t^4)/7 - 14/7
(-5 i t^4)/7 - 14/7 = (-5 i t^4 - 14)/7:
Answer:  (-5 i t^4 - 14)/7
8 0
3 years ago
Jane made a poster that had a length: 1 2/3 of feet and a width: 5/6 of feet. What is the perimeter of her poster?
slamgirl [31]

Answer:

P   = 6 2/3 ft

Step-by-step explanation:

The formula for the perimeter of a rectangle of length L and width W is

P = 2(L + W).

Here the perimeter is P = 2(1 2/3 + 5/6) = 2(5/2 + 5/6)

                                                                  = 2(15/6 + 5/6) = 2(20/6)

                                                                  = 40/6 = 20/3

                                                              P   = 6 2/3 ft

5 0
2 years ago
PLEASE HELP<br> IM STUCK
viktelen [127]

Answer:

y=-1/4x-6

It crosses the y axis at -6 and has a slope of 1/4

5 0
3 years ago
Read 2 more answers
2) Shane puts aside $40 per week for his monthly car payment. He earns $320 per week.
ExtremeBDS [4]

Answer:

12.5%

Step-by-step explanation:

320 divided by 40 = 8

100 divided by 8 = 12.5

100% is 320 dollars, which means that 40 dollars is 1/8 of 320. And 1/8 of 100 is 12.5%

8 0
3 years ago
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