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Elodia [21]
3 years ago
8

Find the zeroes of the polynomial function f(x)=x^4-5x^3+11x^2-25x+30.

Mathematics
1 answer:
katen-ka-za [31]3 years ago
7 0

Step-by-step explanation:

x⁴ − 5x³ + 11x² − 25x + 30

x⁴ − 5x³ + 6x² + 5x² − 25x + 30

x² (x² − 5x + 6) + 5 (x² − 5x + 6)

(x² + 5) (x² − 5x + 6)

(x² + 5) (x − 2) (x −3)

The zeros are 2, 3, and ±√5i.

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At rehearsal for the school play, jack sings three times as many songs as Jennifer, and then dances to 5 more songs, just to sho
Brilliant_brown [7]

Step-by-step explanation:

3x+5=44

3x=44-5

3x=39

x=39÷3

x=13

6 0
2 years ago
Naty bought a dress for $24.95 and a skirt for $14.95.
FrozenT [24]

Answer:

Total items = $39.90

Sales tax amount = $3.7905

Total cost = $43.691

The clerk's error is using 9.5 as sales tax amount instead of finding 9.5% of the total items

Step-by-step explanation:

Dress = $24.95

Skirt = $14.95

steps the clerk completed.

Step 1: 24.95 + 14.95 = 39.90

Step 2: 39.90 +9.5 = 49.40

Correct steps:

Total items = dress + skirt

= $24.95 + $14.95

= $39.90

Sales tax = 9.5%

Sales tax amount = 9.5% of total

= 9.5/100 × $39.90

= 0.095 × 39.90

= $3.7905

Total cost = Total + sales tax amount

= $39.90 + $3.7905

= $43.6905

To the nearest hundredth

= $43.691

Sales tax is the amount of money imposed by government on the sales of some items

Total cost is the cost of all items including sales tax

7 0
2 years ago
A cylindrical well has a radius of 10 feet and a height of 15 feet.what volume of water will it take to fill in the well?
horsena [70]
The volume of the well...
V ≈ 4712.39
6 0
2 years ago
Read 2 more answers
William, Xing Mei, Yuki, and Zack run a race. In how many different ways can they finish?
BigorU [14]

Answer:

24

Step-by-step explanation:

Four total places someone can come - 1st, 2nd, 3rd or 4th. Anyone can come 1st - 4 people

Now only the remaining 3 can come second - 3 people

Next, only the remaining 2 people can come third - 2 people

Finally, one person comes last - 1 person

4 x 3 x 2 x 1 = 24

5 0
3 years ago
Sammy can run 3 1/2 feet in 2 seconds what is his unit rate ( feet per second)
zlopas [31]
1.75ft/second. 3.5/2 simplifies to 1.75/1.
7 0
3 years ago
Read 2 more answers
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