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yan [13]
3 years ago
7

How many complex roots does the equation 0=4x4−x3−5x+3 have?

Mathematics
1 answer:
liberstina [14]3 years ago
7 0

Answer:

4

Step-by-step explanation:

Descarte's rule of signs tells you that there will be 0 or 2 positive real roots and 0 negative real roots. A graph shows there are no positive x-intercepts, so 0 real roots.

All four roots are complex.

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Fred buys flags from a manufacturer for f dollars each and then sells the flags in his store for a 26%markup.
Mashutka [201]

Answer:

the markup is 1.26 (the amount added is .26)

1.26x (when x is the price Fred buys them for from the manufacturer)

1.26(40)

$50.40 is the retail price

50.4-40

$10.40 is the markup

Step-by-step explanation:

The 26% markup means that he is selling the flags 26% above the cost.

So, the cost would represent 100%, which is 1, and 26% of markup in decimal number is 0.26.

The price including the markup would be 1.26 as decimal or 126% as percentage.

The problem states that the cost is unknown, so we represent that with a variable x. The retail price would be 1.26x, which is 126% per flag.

Finally, if Fred paid $40 per flag, the actual retail price would be:

1.26($40)=$50.40.

With $10.40 of markup.

5 0
3 years ago
Add or subtract as indicated -3 4/5 + 9 7/10 - 11/20
LenaWriter [7]

Answer:

5 7/20

Step-by-step explanation:

-3 4/5+9 7/10-11/20

=-19/5+9 7/10- 11/20

=-19/5+97/10-11/20

=59/-11/20

=107/20

=5 7/20

7 0
3 years ago
Elvira used 4 cups of grape juice, 1 1/2 cups of cranberry juice, and 1/2 cup of pineapple juice to make punch. One liter
Mandarinka [93]
4+1.5+.5= 6 cups

6 cups = 1.42 liters

Closest measurement is 1.42L
3 0
3 years ago
Help me please, kinda lost
Dmitry_Shevchenko [17]

Answer:

400cm^2

Step-by-step explanation:

For this question, you need to find the surface areas of both objects, then add them together.

For the cube:

56cm for the front

56cm for the back

42cm for the side

42cm for the other side

48cm for the top

48cm for the bottom

SA for the cube: 292cm^2

For the triangle, things are a little different. We do the same process that we did to find the SA of the cube, but we do not have to find the SA of the top side (because there isn't a top side) and we have to divide the total SA by 2 because it's a triangle.

For the triangle:

42cm for the front

42cm for the back

54cm for the slanted side

42cm for the other side

36cm for the bottom

SA for the triangle: (216/2)^2=108cm^2

292+108=400cm^2

the SA of the composite figure is 400cm^2

8 0
3 years ago
Plzz help me with my summer school work
shutvik [7]
I have summer school work too omg!!! it’s annoying
6 0
3 years ago
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