The graph of y = f(x) is shown below. Find all values of x where f(x) = -5.
Picture of graph is there
40 points casue I need this answer
Answers
The best way to find out whether or not the parabola created by a quadratic formula crosses the x-axis is by graphing the quadratic function, but this is not always possible, so one might have to apply the quadratic formula to solve for x and find a real number where the resulting graph would cross that axis.
The quadratic function is a master class in applying the order of operations, and although the multistep process may seem tedious, it is the most consistent method of finding the x-intercepts. The easiest way to interpret quadratic functions is to break it down and simplify it into its parent function. This way, one can easily determine the values needed for the quadratic formula method of calculating x-intercepts. Remember that the quadratic formula states:
x = [-b +- √(b2 - 4ac)] / 2a
This can be read as x equals negative b plus or minus the square root of b squared minus four times ac over two a. The quadratic parent function, on the other hand, reads:
y = ax2 + bx + c
This formula can then be used in an example equation where we want to discover the x-intercept. Take, for instance, the quadratic function y = 2x2 + 40x + 202, and try to apply the quadratic parent function to solve for the x-intercepts. In order to properly solve this equation and simplify it down using the quadratic formula, you must first determine the values of a, b, and c in the formula you’re observing. Comparing it to the quadratic parent function, we can see that a is equal to 2, b is equal to 40, and c is equal to 202.
Next, we’ll need to plug this into the quadratic formula in order to simplify the equation and solve for x. These numbers in the quadratic formula would look something like this:
x = [-40 +- √(402 - 4(2)(202))] / 2(40) or x = (-40 +- √-16) / 80
In order to simplify this, we’ll need to realize a little something about mathematics and algebra first. In order to simplify the above equation, one would have to be able to solve for the square root of -16, which is an imaginary number that does not exist within the world of Algebra. Since the square root of -16 is not a real number and all x-intercepts are by definition real numbers, we can determine that this particular function does not have a real x-intercept.
To check this, plug it into a graphing calculator and witness how the parabola curves upwards and intersects with the y-axis, but does not intercept with the x-axis as it exists above the axis entirely.
The answer to the question “what are the x-intercepts of y = 2x2 + 40x + 202?” can either be phrased as “no real solutions” or “no x-intercepts,” because in the case of Algebra, both are true statements.
Related Questions
Help pleaseeeee ! for a friend
Answers
Answer:
35=6X
Step-by-step explanation:
X can be the number of times Mr. O goes to Starbucks
Hey,
35 = 6X
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g(x) = -x2 + 2x - 9
g(-4)
Answers
g(-4) = -(-4)^2 + 2(-4) - 9
g(-4) = -16 - 8 - 9
g(-4) = -33
Answer:
-33
Step-by-step explanation:
g(x) = [tex]- x^{2} + 2x - 9\\[/tex]
g(-4) = [tex]- ( -4)^{2} + 2 * (-4) - 9[/tex]
= - 16 - 8 - 9 = - 33
Solve for h. -98 = -7h h =
Answers
Answer:
14
Step-by-step explanation:
[tex] - 98 = - 7h \\ \\ - 98 \div - 7 = h \\ \\ 14 = h[/tex]
BRAINLY AND POINTS IF GIVE REAL ANSWER AND FAST
Find the final price of your bill at a restaurant if your subtotal is $20.75 and you must pay 7.55%
tax.
Answers
Answer:
$22.31
Step-by-step explanation:
The parallel dotplots below display the number of scholarship applications submitted by students for each of two schools: A and B.
2 dotplots titled Scholarship Applications by Class. The number lines go from 9 to 15 and are labeled number of scholarships. School A, 9, 1; 10, 1; 11, 1; 12, 1; 13, 2; 14, 8; 15, 10. School B, 9, 2; 10, 2; 11, 4; 12, 9; 13, 3; 14, 2; 15, 2.
Which of the following statements is true?
The range for the number of submitted scholarships is larger for school A.
The range for the number of submitted scholarships is larger for school B.
There is a smaller standard deviation for the number of submitted scholarships for school A.
The standard deviation in the number of submitted scholarships is the same for both classes.
Answers
Answer:I’m pretty sure it’s c
You roll an eight-sided die. What is the chance that it will land on either a 2 or a 5? Write your answer as a fraction.
Answers
Answer:
2/8 and the simplified version is 1/4
Step-by-step explanation:
Answer:
2/8
Step-by-step explanation:
First you know that it is a eight- sided die. 2 or 5 are two numbers so it is 2/8.
you put all of the numbers and count them up on the top as numerators ex: 2/ Then the number of the sided die as the denominator.ex: 2/8 Hope this helped.
what's (-9n^6) (8n) equal?
Answers
Answer:
skp
Step-by-step explanation:
Help me please..........
Answers
Answer:
66.4°
Step-by-step explanation:
→ Find the side which is not given
Hypotenuse = 15 cm
Opposite = ?
Adjacent = 6 cm
→ Utilise the formula triangle with out opposite in it
Cos⁻¹ = Adjacent ÷ Hypotenuse
→ Substitute in the terms
Cos⁻¹ = 6 ÷ 15 ⇔ 66.4°
the total cost of playing an online game is $170. the base cost of the game is $50, and it costs $30 per month to play the game. The equation 170=30x+50 can be used to find the x (the number of months you play the game). How many months will you get to play the game if the total cost is $170?
Answers
Answer:
x = 4 (4 months)Step-by-step explanation:
170 = 30x + 50
Step 1: Subtract 50 from both sides170 - 50 = 30x + 50 - 50
120 = 30x
Step 2: Divide by 30 on both sides120/30 = 30x/30
x = 4
Step 3: Check170 = 30(4) + 50
170 = 120 + 50
170 = 170 ✔️
x = 4 (4 months).
HELPPP
The equation of the line in slope Intercept form is
Answers
Answer:
y = 60x + 40
Step-by-step explanation:
It is in the form of
y = mx + b
m is the slope
b is the y intercept.
The y intercept is 40, so it will be y = mx + 40.
The slope is 60, so y = 60x + 40!
Can someone help me plz
Answers
Answer:
centimeter
Step-by-step explanation:
sana nakatulong
Answer:
millimeter hope this helps(:
Step-by-step explanation:
2-5/6x=-5
what is x
pls show me how to solve it
Answers
I can travel 612 miles in 1 hour in my super speedy plane. Assume that there are 5,280 ft per mile. How many feet would I travel in 1 minute?
Answers
Answer:
53856 feet
Step-by-step explanation:
612*5280 represents how much you would travel in an hour. Then divide the product by 60 to get per minute. 612*5280=3231360ft per hour. 3231360/60=53856 feet per minute. Happy to help!
I will pick the brainiest! Thanks :)
Answers
Answer:
5+4.5=9.5
Step-by-step explanation:
Answer: the answer is in the attached file/picture ;)
Step-by-step explanation:
Graph.
Y =- 1/4x + 5
Answers
Answer:
Y = -1/4x + 5
(0, 5) (4, 4)
help please it is due in 10 min
will give brinly
Answers
Answer:
H.) -5
Step-by-step explanation:
Good luck
Hope this helps you have a great day!!!!
The price of a dress was reduce from $20 to $12. By what percentage was the price of the dress reduced?
Answers
Answer:
40%
Step-by-step explanation:
12$ out of the original 20$ = 12/20
12/20 = .6 (60%)
1=100%
if 12/20 = 60% then 100% - 60% = 40%
$20-40% is $12
hope this helps somehow
SOLVE FOR W
V = LWH
PLZ HELP ME PLZ
Answers
Answer:
Step-by-step explanation:
(L*H)-V=W
Please help.
Will give brainliest!!!!
Answers
Answer:
the last answer
no solution
i just did this in my math class today
Step-by-step explanation:
Help me plz plz !!!!!!!!
Answers
Answer:
37.5 if u multiply
Step-by-step explanation:
please help i don’t know how to do this
Answers
Answer:
1.) 25
2.)81
3.)49
Step-by-step explanation:
(I recommend getting a Texas instruments TI-84 you can just plug in the numbers and it does it for you :)
In a sixth grade classroom there are 15 car riders, 12 bus riders, and 3 walkers. What is the ratio of students that either are car or bus riders to total students?
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Answer:
For car riders, 15:30. For bus, 12:30. For walkers, 3:30
Step-by-step explanation:
Hope it helps
determine the vertex of y=4(x-25)2+ 91
Answers
Answer:
(25, 91)Step-by-step explanation:
y = a(x - h)² + k ← vertex form of the equation of the parabola with vertex (h, k)
So y = 4(x - 25)² + 91 means:
a = 4
x - 25 = x - h ⇒ - 25 = - h ⇒ h = 25
+ 91 = + k ⇒ k = 91
Therefore vertex is:
(25, 91)
solve for h V=2πr^2h
Answers
Answer: h= V/2πr^2
Step-by-step explanation:
Isolate the variable by dividing each side by factors that don't contain the variable.
BC is parallel to DE. What is the length of CE?
Answers
what is the answer for -5x-8=3x+10
Answers
Answer:
x=− 9 /4
or
=−2.250
Step-by-step explanation:
Check my answers plz <3\
Answers
Answer:
all three are correct
Step-by-step explanation:
ABCD~FECG similar polygons
Answers
Answer:
120
Step-by-step explanation:
Good morning.... I have no idea how to do this ... help pls :)
Answers
Answer:
B
Step-by-step explanation:
Michael fills 1/3 of one trash barrel with 1/9 of the leaves he has raked in his yard.
How many trash barrels must he fill to pick up all of the leaves ?
Answers
Answer:
he will need 3 barrels.