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
Leona [35]
3 years ago
5

Which functions have real zeros at 1 and 4? Check all that apply. A.f(x) = x2 + x + 4 B.f(x) = x2 – 5x + 4 C. f(x) = x2 + 3x – 4

D.f(x) = –2x2 + 10x – 8 E.f(x) = –4x2 – 16x – 1
Mathematics
2 answers:
romanna [79]3 years ago
5 0

Answer:

b and d

Step-by-step explanation:

julia-pushkina [17]3 years ago
5 0

Answer:

Option B, D )the function x^{2} -5x+4 has real zeros at x = 1 and x =4.

Step-by-step explanation:

Given : Real zero x = 1, x = 4.

To find : Which functions have real zeros at 1 and 4.

Solution : We have real zeros x =1 , x=4.

Factor theorem states that (x-r) is a factor of the polynomial function f(x) if and only if r is a root of the function f(x).

Since, we know that the root of the function i.e f(x) are -8 and 5 then the function has the following factor:

(x-1) = 0 and (x-4) =0

Zero product property states that if ab = 0 if and only if a =0 and b =0.

By zero product property,

(x-1)(x-4) = 0

Now, distribute each terms of the first polynomial to every term of the second polynomial we get;

Now, when you multiply two terms together you must multiply the coefficient (numbers) and add the exponent.

x(x-4) -1(x-4) = 0

x^{2} -4x-x+4= 0

Combine like terms;

x^{2} -5x+4 = 0

Since B and we can see D

-2x^{2} +10x-8= 0

Taking common -2

-2(x^{2} -5x+4) = 0

On dividing by -2 both side

x^{2} -5x+4

Therefore,  Option B, D )the function x^{2} -5x+4 has real zeros at x = 1 and x =4.

You might be interested in
In the number 7,890,432, name the digit located in each of these positions.
alina1380 [7]
A=4 B=7 C=9 D=3 E=8 F=0
3 0
3 years ago
Read 2 more answers
Y=f(x)=(1/3)^x find f(x) when x=2
Sladkaya [172]

Answer:

f(2)=1/9

Step-by-step explanation:

f(x)=(1/3)^x

f(2)=(1/3)^(2)

f(2)=1/9

6 0
3 years ago
A cab service charges $4 plus $1.50 per mile. Kate wants to spend no more
bearhunter [10]

Answer:

b

Step-by-step explanation:

took the test i got bj : fz wf

3 0
3 years ago
Read 2 more answers
Please answer ASAP: All of the following are equivalent except _____.
ahrayia [7]
7x 2. All the other answers equal 7x. The first one would be 49x. I hope this helps love! :)
8 0
3 years ago
Read 2 more answers
I need help with this question?????
nadezda [96]

Answer:

the other percentage is 3.96 equals 10.

Step-by-step explanation:

3 0
3 years ago
Other questions:
  • You rented a beach umbrella for 6 days. The first day was $20, each day afterwards the cots dropped by $2 a day. What did you sp
    12·1 answer
  • What is the area of the polygon given below?
    10·2 answers
  • Carly spends 9 hours wrkn. What is her percentage a day at work
    9·1 answer
  • Which polygon is always regular?
    11·1 answer
  • Is volume measured in square units or cubic units?
    10·2 answers
  • The number of minutes spent talking on the phone, m, and the amount of a cell phone bill, a. What is the independent variable
    15·1 answer
  • Consider the following sequence: -5, -1, 3,...
    5·1 answer
  • 4 divided 5 2/3 please and thank you
    5·2 answers
  • Marcy wants to buy a jacket that is advertised on sale for 30% off the original price. What is the decimal equivalent of 30%
    6·1 answer
  • The set of whole numbers and their opposites​
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!