When is the graph of f (x) = 2x2 – 5x – 3 negative?
Answers
9514 1404 393
Answer:
-1/2 < x < 3
Step-by-step explanation:
First you need to find the x-intercepts. Since the leading coefficient is positive, you know the graph is decreasing through the left x-intercept, so will be negative between the x-intercept values.
f(x) = 2x^2 -5x -3
f(x) = 2x^2 -6x +x -3
f(x) = 2x(x -3) +1(x -3)
f(x) = (2x +1)(x -3)
The x-intercepts are the values of x that make these factors zero:
2x +1 = 0 ⇒ x = -1/2
x -3 = 0 ⇒ x = 3
The graph of f(x) is negative on the interval ...
-1/2 < x < 3
Related Questions
PLZ HELP!!! WILL GIVE HIGHEST POINTS IF THE ANSWER IS RIGHT!!
Answers
Step-by-step explanation:
Standard polynomial is:
[tex] - 20 {x}^{3} - 3 {x}^{2} + 4x[/tex]
Leading co effecient is:
-20
I need help ASAP! I am offering brainiest to whoever answers the question first!
Answers
Answer:
Step-by-step explanation:
1536(4)(4)=24576
Answer:1536(4)(4)=24576
Step-by-step explanation:
The table below shows the monthly balances a person had on their credit card over a five-month period.
Month Balance
January -$50
February $25
March -$70
April -$45
May $25
What was the average monthly balance over the five-month period? Enter your answers and your explanations or work in the space provided.
Answers
Answer:
43 dollars
Step-by-step explanation:
to take the average we have to add up all the numbers and divide by 5 which is
215/5=43
if my answer helps please mark as brainliest.
which is smaller 0 or -0
Answers
Answer:
the answer is -0 , -0 is smaller than 0.
A rabbit weighs 2.8 kilograms. How many grams does the rabbit weigh? Use the number of zeros of the product when multiplying a number by
power of 10 to help you. (1 point)
2,800 grams
28 grams
28,000 grams
280 grams
Answers
Answer:
Option A
Step-by-step explanation:
Given data
We are told that the weight of the rabbit is 2.8 kilograms
We also want to convert from kilograms to grams
We know that 1kg= 1000 grams
Hence 2.8 kg= x gram
Cross multiply
x= 2.8*1000
x= 2800 grams
Hence the weight in grams is 2800grams
Option A is correct
Answer:
it is A
Step-by-step explanation:
2,800
Factor f(x) = 4x2 + 11x? - 104x + 105 into linear factors given that – 7 is a zero of f(x).
f(x) = 4x + 11x2 - 104x + 105 = |
(Factor completely.)
Answers
Answer:
f(x) = 4x + 11x2 - 104x + 105 = (x - 3)(x + 7)(4x - 5)
Step-by-step explanation:
f(x) = 4x^3 + 11x2 - 104x + 105
has the coefficients {4, 11 -104, 105}. We perform synthetic division using the given -7 as divisor:
-7 / 4 11 -104 105
-28 119 -105
-----------------------------------
4 -17 15 0
Since the remainder is zero (0), we have shown that -7 is a zero of f(x). The coefficients of the quotient (above) are {4, -17, 15}. Let's try factoring the corresponding polynomial again using synthetic division. Start out by using 5 as divisor and determining whether or not the remaindeer is zero:
5 / 4 -17 15
20 15
-------------------------
4 3 30 No, the remainder is 30 and so 5 is not a
root of this quadratic. Try the divisor 3 instead:
3 / 4 -17 15
12 -15
---------------------------
4 -5 0 Yes, the remainder is 0 and so 3 is a root.
Thus, the given f(x) = 4x + 11x2 - 104x + 105 factors as follows:
f(x) = 4x + 11x2 - 104x + 105 = (x - 3)(x + 7)(4x - 5). Notice that the coefficients of the last factor come from those we found above when using 3 as a divisor in synthetic division.
2. A cup of coffee costs $2.50. If the total cost
is $17.50, then how many cups of coffee were
purchased?
a. Write an equation:
b. What is the constant of proportionality?
Help please
Answers
Answer:
The constant is 2.50
I believe the equation would look like 2.5x=17.5
and x would equal 7
Whoever answers this question first gets brainly 2
Answers
Explanation step by step:
This graph shows how the total distance Jack has walked depends on the number of trips he has made to school.
ASAP BEFORE 11:59
Answers
Answer:
whats the question
Step-by-step explanation:
thats the answer
Each time he read his book, Paul recorded the number of minutes he spent reading and the number of pages he read in that time. He graphed this information, and decided that number of pages and time are related proportionally. Which graph is most likely the graph of his information?
Answers
Answer:
it a i had the same one
Step-by-step explanation:
HELP REEEEEEEEEEEEEEEEEEEEEEEEE
Answers
Answer:
Rounding
Step-by-step explanation:
Answer:
Round
Step-by-step explanation:
I really need help with this
Answers
Answer:
3
Step-by-step explanation:
I recall seeing this question. If I'm wrong, let me know.
1/6 + (-7/9) in simplest form
Answers
Answer:
Step-by-step explanation:
3/18 + (-14/18)= -11/18
X/4=8
Solve that using the opposite operation
Answers
Answer:
x = 32
Step-by-step explanation:
4 • (x/4) = 8 • 4
x = 32
Step-by-step explanation:
[tex]\qquad\sf\dashrightarrow x/4=8 [/tex]
[tex]\qquad\sf\dashrightarrow x=4×8 [/tex]
[tex]\qquad\sf\dashrightarrow x=32 [/tex]
The value of 23 + 33 = ___. Numerical Answers Expected!
Answers
Answer:
75.76%
Step-by-step explanation:
The population of Williston is currently 21,200 people. If the population
increases at an average rate of 415 people per year, which equation could
be used to find the approximate number of years it will take for the
population to reach 27000 people?
Answers
[tex]21200 + 415(y)[/tex]
[tex]27000 = 21200 + 415(y)[/tex]
[tex]27000 - 21200 = 21200 - 21200 + 415(y)[/tex]
[tex]5800 = 415(y)[/tex]
[tex] \frac{5800}{415} = \frac{415(y)}{415} [/tex]
[tex]13.9759..... = y[/tex]
[tex]it \: will \: take \: about \: 14.0 \: years[/tex]
Need the answer/step by step explanation
Answers
Answer:
8 weeks
Step-by-step explanation:
m=12+0.5w
Replace the m with the 16 and solve
16=12+0.5w
4=0.5w
8=w
Which of the following is an example of the associative property?
2(5 - 3) = 10 - 6
-7 + (19 + 5) = (-7 + 19) + 5
11 + (6 + 8) = 11 + (28 + 6)
· 3 = 1
Answers
Answer:
The second one is the associative property bruda!
17.
Is the relation a function? Why or why not?
{(–8, –4), (–2, 0), (1, 3), (–2, 6)}
A. Yes; only one range value exists for each domain value.
B. No; the relation passes the vertical line test.
C. No; two range values exist for domain value –2.
D. Yes; two range values exist for domain value –2.
Answers
Answer:
C. No; two range values exist for domain value –2.
Step-by-step explanation:
The relation is not a function.
The -2 in the domain repeats
Since
x
=
−
2
produces
y
=
0
and
y
=
6
, the relation
(
−
8
,
−
4
)
,
(
−
2
,
0
)
,
(
1
,
3
)
,
(
−
2
,
6
)
is not a function.
The relation is not a function.
geometry multiple choice question HELPPP!!!??
Answers
Answer:
24/30
Step-by-step explanation:
A newspaper invited readers to call a telephone number and record their comments. The next day they reported that readers overwhelmingly prefer two-way traffic flow to one-way streets. This is an example of: A. A convenience sample B. A self-selected sample C. A systematic sample D. A random sample does anyone know the answer
Answers
Answer: Self selected sample
Step-by-step explanation:
They people chose themselves
This is an example of: B. A self-selected sample , Option B is the answer.
What is a self-selected sample ?A self selected sampling technique is one in which the researcher puts out a call or publicises so that individuals and organisations can take part in the survey on their own will which saves the time for searching for the appropriate people .
It is given that
A newspaper invited readers to call a telephone number and record their comments.
This is an example of: B. A self-selected sample
Therefore Option B is the answer.
To know more about Self Selected Sample
https://brainly.com/question/27383518
#SPJ2
if c% of a number is (a+b) what is the number
Answers
Answer:(a+b)/c ×100
Step-by-step explanation:
Let the number be "x"
According to the question,
X×C% = a+b
>> X × C/100 = a+b
So, x =(a+b)/c × 100
Which of the following coordinate pairs make the equation x-9y=12 true? A (3,-1) B (0,-4/3) C (0,12) D (12,0) (There are multible answers.)
Answers
Answer:
Burun yardımı lazım ders programlı
Step-by-step explanation:
Lise pitirdim üventisiyi bitirdim
Tell weather each pair is parallel, perpendicular, or neither: y= 3x + 2 2y= 6x -6
Answers
When you put 2y=6x-6 into slope intercept form, you get y=3x-3.
They are parallel because they have the same slope.
Perpendicular lines have opposite reciprocal slope. For example, one equation would have a slope of 3 and the second one would have a slope of -1/3.
Hope that makes things more understandable!
if the measure of angle 1 = 17x - 30 and the measure of angle 2 = 7x + 18, what is the value of x?
Answers
Answer:
do you know the answer
The value of x is 4.8.
Given that,
The measure of angle 1 = 17x - 30 and the measure of angle 2 = 7x + 18.Based on the above information, the calculation is as follows:
Angle 1 = ANgle 2
17x - 30 = 7x + 18
17x - 7x = 18 + 30
10x = 48
x = 4.8
Therefore we can conclude that the value of x is 4.8.
Learn more: brainly.com/question/6201432
2 x (c2 - 5) for c = 4 sos!!
Answers
Answer:
6
Step-by-step explanation:
2(4·2-5)
2(8-5)
2·3
6
Answer:
6
Step-by-step explanation:
2 x (c2 - 5) = 2 x (4 x 2 - 5)
= 2 x (8 - 5)
= 2 x (3)
= 6
2. Jules conducted a survey and asked 100
people how many years of education they have
and what their annual income is. She used the
results to make a scatter plot.
What type of assoastion should she expect to see in the scatter plot
Answers
what is the distance between (5 , 2)and (-1 , 4)
Answers
Answer:
6.32 or 2 x sq rt 10
Step-by-step explanation:
6 along x axis, 2 along y axis
using the Pythagorean theorem
6^2+2^2=40
sq rt 40=6.32 or 2 x sq rt 10
2x2– 21x = 11 what would the x be
Answers
Answer:
x = -1/3
Step-by-step explanation:
11. Select from below the best estimate for the decimal that is equivalent to 100.5%
A. 0
B. 1
C. 100
D. 1000
Answers
Answer:
c
Step-by-step explanation:
in all honesty because if you round thats what you would get
