Answer:C
Step-by-step explanation:
The derivation of the quadratic function is true
What is Quadratic Equation?A quadratic equation is a second-order polynomial equation in a single variable x , ax² + bx + c=0. with a ≠ 0. Because it is a second-order polynomial equation, the fundamental theorem of algebra guarantees that it has at least one solution. The solution may be real or complex.
The roots of the quadratic equations are
x = [ -b ± √ ( b² - 4ac ) ] / ( 2a )
where ( b² - 4ac ) is the discriminant
when ( b² - 4ac ) is positive, we get two real solutions
when discriminant is zero we get just one real solution (both answers are the same)
when discriminant is negative we get a pair of complex solutions
Given data ,
Let the quadratic equation be represented as A
Now , the value of A is
ax² + bx + c = 0
Step 1 :
ax² + bx + c = 0
Step 2 : Subtracting c on both sides , we get
ax² + bx = -c
Step 3 : Divide by x on both sides , we get
ax + b = -c/x
Hence , the steps are true in solving the quadratic equation
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Question 5 Iker gave the cashier $50 to pay for 6 books. The cashier gave him $6.26 in change. Each book cost the same amount. What is the cost in dollars and cents for each book? Answer
Answer: $ 7.29
Step-by-step explanation:
First you subtract 6.26 from 50
= 43.74
Then you divide 43.74 by 6
= 7.29
SOMEONE HELP ME TYSM
Answer:
[tex]\frac{7}{4}[/tex]
Step-by-step explanation:
Convert the mixed number into an improper fraction : [tex]\frac{5}{2}[/tex]Subtract how many liters Cara has already drank : [tex]\frac{5}{2}[/tex] - [tex]\frac{3}{4}[/tex] Transform the expression : [tex]\frac{10-3}{4}[/tex]Subtract the numbers : [tex]\frac{7}{4}[/tex]I will mark the brainiest! Please, and thanks! :)
(You can write them on paper, and upload a pic)
Answer:
I added the picture as an attached file below
Step-by-step explanation:
Hope it helps:)
A hypothetical population consists of eight individuals ages 14, 15, 17, 18, 19, 21, 28, and 30 years What is the probability that a person in this population is a teenager? What is the probability of selecting a participant older than 30? What is the probability of selecting a participant who is at least 20 years old?
Answer:
1)0
2)3/8
Step-by-step explanation:
2)total number of participants who are at least 20 years old = 3
Total number of participants= 8
Explain how the volume of a right cone relates to the volume of a cylinder with the same base
and height. Use diagrams and volume formulas to explain the relationship.
Answer:
its 1/3 of the volume of a cyinder with the same base
Step-by-step explanation:
a pyramid has the same policy with prisms of the same base
Volume is a three-dimensional scalar quantity. If the radius and the height of a cone and a cylinder are the same, then the volume of the cylinder is thrice the volume of the cone.
What is volume?
A volume is a scalar number that expresses the amount of three-dimensional space enclosed by a closed surface.
Assume a cone and a cylinder such that the radius of the base of both the figures is r units, while the height of the cone and cylinder both is h units.
The volume of the cone with radius r units and height h units now can be written as,
Volume of the cone = (1/3) × π × r² × h units³
The volume of the cylinder with a radius of r units and the height of h units now can be written as,
Volume of the Cylinder = π × r² × h units³
Taking the ratio of the volume of the cone and the volume of the cylinder,
Volume of the cone/Volume of the cylinder = (1/3)πr²h units³ / πr²h units³
Volume of the cone/Volume of the cylinder = 1/3
Volume of the cylinder = 3 × Volume of the cone
Hence, if the radius and the height of a cone and a cylinder are the same, then the volume of the cylinder is thrice the volume of the cone.
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Will mark BRAINLIEST!!!!Which equation represents the relationship between x and y?
X
у
1
4
2
5
3
6
4
7
y = 3x + 1
y = x + 1
y = x + 3
y = x - 3
Answer:
Third one
Step-by-step explanation:
y=x+3
determine the slope of the line that contains (-4,2) and (6,8)
Deku and reaper also what is 2-4=?
Answer:
the answer is -2
Step-by-step explanation: The answer is from google
Answer:
-2
Step-by-step explanation:
indeed brother
−2c + 6 = −8
Solve for c, please
Answer: c=13/2 but as a fraction
Step-by-step explanation:
Answer:
c = 7
Step-by-step explanation:
-2c + 6 = -8
Subtract 6 from both sides
-2c = -14
Divide -2 by both sides
c = 7
Find the GCF of the two numbers, and rewrite the sum of the two numbers using the distributive property.
12 + 18
A) 4(2 + 3)
B) 4 + (2 + 3)
C) 6(2 + 3)
D) 6 + (2 + 3)
como se simplifican los términos algebraicos
Answer:
what the????????..........
Answer Asap Will mark brainlest if it's right.
Answer:
B........................
PLEASE HELP ME ,THIS IS HARD ,AND I DON’T UNDERSTAND MATH..
Answer:
Step-by-step explanation:
divide y by x
in a table and coordinate pair, which is something like (0,4), x always comes first. So, in this table x is the time in seconds and y is the distance in meters. 120/4=30 meters per second. For the second part of the table, since we know what the slope is, or the constant rate of change, 30, we can multiply 30 by 25 which is 750. You can also use the equation y=mx, m is the slope, and x is a point on the coordinate pair. For example, in the second table, y=30(25). For the last part of the table, you can use the same equation. 270=30x. We try to get x alone so we do, 270 divided by 30 which is 9. So a cheetah runs at 270 meters per 9 seconds.
What is 63/-9 + 7 someone please help me
Answer:
63 divided by -9 equals -7. If you add 7, you get 0. 0 is the answer.
Answer:
0
Step-by-step explanation:
63 / -9 = -7
-7 + 7 = 0
Therefore 63 / -9 + 7 = 0.
Hope this helps :)
I would appreciate if you gave me brainliest.
What is the measurement of this angle
Answer:
50 degrees
Step-by-step explanation:
math slope helpppp meeee
Answer:
1. -3/8 2. 1/2 3. -3/2
Step-by-step explanation:
You can use Y2-Y1/X2-X1 to find the answers
Ask me if you want it more in detail
Shirt $28
Tax Rate 9%
tax
total
Answer:
Tax is $2.52 and the total is $30.52
Step-by-step explanation:
9% of 28 is 2.52 and yeah.
Answer:
The tax is $2.52
Total is $30.52
Step-by-step explanation:
9% of 28 is 2.52
then add that to the shirt price
What is the slope of the line that passes through the points (2, –3) and (–2, 5)? 2 1/2 -1/2 -2
Answer: The slope is -2.
Step-by-step explanation:
(2,-3)
(-2,5)
Using the two given points, you can find the slope by finding the difference in the y coordinates and diving it by the difference in the x coordinates.
y coordinates: -3 - 5= -8
x coordinates; 2-(-2) = 4
Slope: -8/ 4 = -2
Write the equation for the
line that passes through
(-3, 5) and is parallel to the
graph of y = 2x - 4.
Answer:
(
y
−
4
)
=
2
⋅
(
x
+
3
)
y
−
4
=
2
x
+
6
y
=
2
x
+
6
+
4
We get the equation of the line as :
y
=
2
x
+
10
The graph will look like this:
graph{y=2x+10 [-10, 10, -5, 5]
Step-by-step explanation:
★PLSSSSS HELPPPPPPPPP★
Answer:
i believe its C
Step-by-step explanation:
⚠️ PLEASE I WANNA FINISH
Answer:
m = 0.666667*x+1 is the answer
Step-by-step explanation:
Teresa wants to replace a glass window in her restaurant. The window is in the shape of a square. Its side lengths are 6 feet. Suppose glass costs $7 for each square foot. How much will the glass cost to replace the window? Please I really need help ASAP!!!
Answer:
I think the answer is 84 dollars
Step-by-step explanation:
Answer: The answer is 254
Step-by-step explanation:
what is : 1.25 + (-0.75)
Answer:
0.5
Step-by-step explanation:
use a cauculator
Answer:
0.50
Step-by-step explanation:
You can rewrite this as 1.25 - 0.75. When you do this, you will get 0.50
CAN SOMEONE PLEASE HELPPP!!!!! It's Algebra 1. I attached the picture it's just one question.
You have to do 2h up, halph an hour parallel , and then a line more vertical than the 2h, then parallel the time he is on the top, and then a line down that stops parallel for some time in the middle and then a line down to the bottom.
There you are almost but you have to do it with better measures.
what is the value of y when x = 90?
Answer:
is there anything else??
Step-by-step explanation:
What's y'all dream college?? (Mine is Howard university or another HBCU school )
Answer:
Yale University would look so good on my record!
Step-by-step explanation:
But it's a 1/10 chance that I'll make it but It's cool to think about
What fraction of 34 it will take to make 23?
Answer:
34 = 2 × 17
Step-by-step explanation:
To reduce a fraction divide the numerator and the denominator by their greatest common factor, GCF
-6 + 5 1/4. plzz help
Answer:
the answer is -0.75.
Step-by-step explanation:
-6 + 5 1/4 = -0.75.
use the discriminant to determine how many and what kind of solutions the quadratic equation x^2-x=1 has
Answer:
Two solutions
Step-by-step explanation:
x^2-x=1
plug into the discrimiant fomurla
The asnwer ends up being 5
which is positive, meaning that the discriminant has two solutions
Postitive number = Two solutions
The answer is 0 = One solution
Negative number = No solutions
:)
please help me with this i dont know wht im doing
Answer:
D: The slope is 3
Step-by-step explanation:
To figure out the slope, which is always a constant, you simply figure out the average displacement using the points we already know. This is described by the equation y2-y1/x2-x1. Let's use the ordered pairs (-3, 2) and (-1, 8) to figure this out.
8-2/-1-(-3) = 6/2 = 3
Another method you could use is to graph the points and figure out how many units y has to go up for every x over, or the "rise over run"
Either way, your slope is 3.
Answer:
its 3
Step-by-step explanation: