1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Mariana [72]
3 years ago
14

Y^3-9y^2+y-9 I don't know how to solve this can you help

Mathematics
1 answer:
aleksley [76]3 years ago
3 0
I'm guessing your problem is this:
y³ - 9y² + y - 9 = 0
right?

In solving this problem, I recommend doing this:
y³ - 9y² + y - 9 = 0
Factor out a y² from the first two numbers in the problem:
y²(y - 9) + (y - 9) = 0
Separate the parentheses which means y - 9 goes on one side. The y² added a one since it came from the + 1 in the middle of expression. When you're separating parentheses like this you just take the outside numbers and combine them together. Since + 1 came from the outside of the (y - 9) and y² also was sitting on the outside of (y - 9) combine them to make y² + 1. Like this:
(y² + 1)(y - 9) = 0
Now separate your two parentheses to two separate problems:
(y² + 1) = 0    and    (y - 9) = 0
Now you're y² + 1 will equal:
y² = -1
y = √-1 <-- This number doesn't exist so it will be an imaginary number (i). If you guys didn't learn that in your class I recommend just leaving it as i for that part.
Now solve y - 9 = 0:
y = 9 <-- Since we added nine to both sides to get this.

So you're final answer should be y = i and 9
You might be interested in
This list gives facts about a library.
Alchen [17]

Answer:

if you can use the app photomath or m.a.t.h. w.a.y

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
I REALLY NEED HELP WORTH 10 POINTS URGENT!!!!!
polet [3.4K]

Answer:

(f\circ g)(4)=31

Step-by-step explanation:

<u>Composite Function</u>

Given f(x) and g(x) real functions, the composite function named fog(x) is defined as:

(f\circ g)(x)=f(g(x))

For practical purposes, it can be found by substituting g into f.

We have:

f(x)=3x+1

g(x)=x^2-6

Computing the composite function:

(f\circ g)(x)=f(g(x))=3(x^2-6)+1

Operating:

(f\circ g)(x)=3x^2-18+1

Operating:

(f\circ g)(x)=3x^2-17

Now evaluate for x=4

(f\circ g)(4)=3(4)^2-17=48-17

\boxed{(f\circ g)(4)=31}

8 0
3 years ago
Which is not equivalent to 3/5
Valentin [98]

Answer: d.

15/24 is not an equivalent fraction of 3/5.

8 0
2 years ago
It takes Jessica 1 1/2 hours to write 3 pages of her research paper. If she has to have a total of 10 pages, how long will it ta
murzikaleks [220]
It would take 5 hours because you take 3 and divide that by 1.5 & you get 2 so 5 multiplied by 2 is 10. it would take her 30 minutes per page
6 0
3 years ago
Read 2 more answers
Help me please I'm really confused
Vanyuwa [196]
The answer is (a).  hopefully this answers your question
4 0
3 years ago
Other questions:
  • The table below represents the displacement of a bird from its nest as a function of time: time (hours) x displacement from nest
    7·1 answer
  • The camera shop wants to use the measure of central tendency that expresses how successful they are in selling camaers which mea
    15·1 answer
  • Evaluate. Be smart, <br>(2.31∙5.82+4.18∙2.31+90∙2.31)÷2.31∙0.55
    9·1 answer
  • A sea turtle swims at a speed of 27 kilometers per hour. A girl swims 14 decimeters per second.
    14·2 answers
  • Is 85 prime or composite explain
    12·1 answer
  • What is <br> 340 pages; 20 percent decrease
    15·1 answer
  • What are the coordinates of point D?
    7·2 answers
  • A bus started from Kathmandu and reached khanikhola,26km far from Kathmandu, in one hour. if the bus had uniform acceleration, c
    5·1 answer
  • there are 3 method to show that 40 is the sum of two prime. among all the prime , find the difference between the two largest pr
    10·2 answers
  • It’s not a or c help
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!