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elena55 [62]
3 years ago
15

Two roots of a 3 degree polynomial equation are 5 and-5

Mathematics
1 answer:
notka56 [123]3 years ago
3 0
Hello,

I suppose you want the equation

There are 2 infinite solutions:
y=k(x-5)²(x+5)
or
y=k(x-5)(x+5)²

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What is the product of (3x+5) and (x+4)
kodGreya [7K]

For this case we must find the product of (3x + 5) (x + 4)

By definition, the distributive property states that:

(a + b) (c + d) = ac + ad + bc + bd

Then, according to the expression we have:

3x ^ 2 + 12x + 5x + 20 =\\3x ^ 2 + 17x + 20

Answer:

3x ^ 2 + 17x + 20

Option C

4 0
3 years ago
Read 2 more answers
The data below shows.the number of car thefts in a city for a period of 20 days. complete parts (a) and (b) below.
iogann1982 [59]

Answer:

13 cars per day

Step-by-step explanation:

64 - 51 = 13 cars per day

hope it helps

3 0
3 years ago
Jordan drove for 6 hours at 55 miles per hour, while Matt drove for 3 hours at 60 miles per hour. If Isaac drove 82 miles longer
mihalych1998 [28]
If you look at the equation, we have to multiply the hour and the mph(miles per hour) together to find how many miles they drove. For Jordan, we would have to multiply 6 times 55 which is 330. Jordan drove 330 miles. For Matt, we have to multiply 3 times 60, which gets us 180. Together, they would have drove 510 miles. If Isaac drove 82 miles longer than Jordan and Matt drove combined, we would get 582 miles. Isaac drove 592 miles.
5 0
3 years ago
There are 8 orange candies and 4 blue candies you select one candy eat it and then select another find P(you select first an ora
Savatey [412]
Orange first = 9/13 

Blue next = 4/12 

<span>P(both) = (9/13)*(4/12) </span>
<span>P(both) = 3/13 ~ 0.23</span>
4 0
4 years ago
Read 2 more answers
Eric purchased three music CDs and a sweatshirt from a band's online store and received a 20% discount. He paid $100 for his pur
swat32

The <em>correct answers</em> are:


B) $25; and

D) $50.


Explanation:


Eric got a 20% discount. This means he paid 100%-20% = 80% of the retail value.


Let C represent the cost of CDs and S represent the cost of sweatshirts. For Eric's purchase, we have the equation:

0.8(3C+S) = 100


Using the distributive property, we have

0.8(3C) + 0.8(S) = 100

2.4C + 0.8S = 100


Neil got a 40% discount; this means he paid 100%-40% = 60% of the retail value. We have the following equation for him:

0.6(4C+2S) = 120


Using the distributive property, we have:

0.6(4C)+0.6(2S) = 120

2.4C + 1.2S = 120


This gives us the system:

\left \{ {{2.4C+0.8S=100} \atop {2.4C+1.2S=120}} \right.


Since the coefficient of C is the same in each equation, we will eliminate this variable. We do this by subtracting the equations:


\left \{ {{2.4C+0.8S=100} \atop {(2.4C+1.2S=120)}} \right.  \\ \\-0.4S=-20


We divide both sides by -0.4:

-0.4S/-0.4 = -20/-0.4

S = 50


Each sweatshirt is $50.


We will substitute this into the first equation:

2.4C+0.8(50) = 100

2.4C + 40 = 100


Subtract 40 from each side:

2.4C+40-40 = 100-40

2.4C = 60


Divide each side by 2.4:

2.4C/2.4 = 60/2.4

C = 25


Each CD is $25.

8 0
3 years ago
Read 2 more answers
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