Find the vertex of the quadratic function:
y=1/2x^2 + 8x – 50
Answer:
definition
The vertex form of a quadratic function is given by
f (x) = a(x - h)2 + k, where (h, k) is the vertex of the parabola.
FYI: Different textbooks have different interpretations of the reference "standard form" of a quadratic function. Some say f (x) = ax2 + bx + c is "standard form", while others say that f (x) = a(x - h)2 + k is "standard form". To avoid confusion, this site will not refer to either as "standard form", but will reference f (x) = a(x - h)2 + k as "vertex form" and will reference f(x) = ax2 + bx + c by its full statement.
When written in "vertex form":
• (h, k) is the vertex of the parabola, and x = h is the axis of symmetry.
• the h represents a horizontal shift (how far left, or right, the graph has shifted from x = 0).
• the k represents a vertical shift (how far up, or down, the graph has shifted from y = 0).
• notice that the h value is subtracted in this form, and that the k value is added.
If the equation is y = 2(x - 1)2 + 5, the value of h is 1, and k is 5.
If the equation is y = 3(x + 4)2 - 6, the value of h is -4, and k is -6.
divider
button To Convert from f (x) = ax2 + bx + c Form to Vertex Form:
Method 1: Completing the Square
To convert a quadratic from y = ax2 + bx + c form to vertex form, y = a(x - h)2+ k, you use the process of completing the square. Let's see an example.
example Convert y = 2x2 - 4x + 5 into vertex form, and stat
Step-by-step explanation:
Jim is going to plant grass in a rectangular area that is 15 feet long and 10 feet wide.At the store, there are bags of grass and seed that will cover 200 square feet. Willone bag be enough
The area of the plant grass is the amount of plant grass on the field
It is true that one bag of grass and seed will be enough
How to determine if the bag will be enough?
The dimension of the rectangular area is:
15 feet by 10 feet
So, the area of the rectangular garden is:
Area = 15 feet * 10 feet
Evaluate the product
Area = 150 square feet
There are bags of grass and seed that will cover 200 square feet.
200 square feet is greater than 150 square feet
Hence, one bag of grass and seed will be enough
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Answer:
The area of the plant grass is the amount of plant grass on the field
It is true that one bag of grass and seed will be enough
How to determine if the bag will be enough?
The dimension of the rectangular area is:
15 feet by 10 feet
So, the area of the rectangular garden is:
Area = 15 feet * 10 feet
Evaluate the product
Area = 150 square feet
There are bags of grass and seed that will cover 200 square feet.
200 square feet is greater than 150 square feet
Hence, one bag of grass and seed will be enough
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Step-by-step explanation:
C
Find the product
- ab and ac
Answer:
-a square bc
Step-by-step explanation:
-ab(ac)
= - (a*a*b*c)
= - a to the power 2 and bc
= -a square bc
Answer:
-a square bc
Step-by-step explanation:
trust
My teacher asked me to round 64,400 to the nearest thousand. I think that the answer is 65,000. Did I round correctly?
Answer: unfortunately no
Step-by-step explanation:
When rounding numbers...
if the number is less than 5, round down. Other than that 5 and up you round up.
You rounded up, 4 to 5 thousand. 4 is less than 5 so you should had rounded down, your answer is 60,000
How do i use a Vertex Form??
Answer:
The vertex form of a quadratic function is for example f(x) = a(x – h)2 + k, where a, h, and k are constants. of the parabola is at (h, k). When the quadratic parent function f(x) = x2 is written in vertex form, y = a(x – h)2 + k, a = 1, h = 0, and k = 0.
Step-by-step explanation:
Hope this helps!!
Answer:
The vertex form of a quadratic function is f(x) = a(x – h)2 + k, where a, h, and k are constants. of the parabola is at (h, k). When the quadratic parent function f(x) = x2 is written in vertex form, y = a(x – h)2 + k, a = 1, h = 0, and k = 0.
I think it will help you.
Sammie is driving to her cottage with her family. The drive 675 miles in 9 hours. What is the unit rate in miles divided by hour
Answer:
75
Step-by-step explanation:
miles driven/hours= answer
Answer:
75 miles per hour
Step-by-step explanation:
miles/hours
675/9
75/1 or 75 miles / hour
Help me please 25 points
Answer:
Step-by-step explanation:
f(1) .here x = 1 and this is less than 4. so, we have to choose
f(x) = -(x - 2)² - 3
f(1) = -(1-2)² - 3
= - (-1)² - 3
= - (1) - 3
= -1 - 3
= -4
Can someone help me on this question? I Just need help with the 3rd question. Use the word bank below to answer. I’ll mark you brainliest if you answer soon!!!
Answer:
Transitive property
Step-by-step explanation:
Refer to the picture given below;
Answer:
transitive property
Step-by-step explanation:
it not complementary angles because it not 90 degree
it not vertical angles because it doesn't show pair angles formed when two lines intersect.
it not reflexive property because it doesn't shown a number is always equal to itself.
so, for the reason above i think transitive property is the answer.
Cheryl ran three laps during her physical education class. If her times were 1.23 minutes, 1.04 minutes, and 1.18 minutes,
what was her average lap time
1.19
1.15
1.21
1.17
Answer:
1.15
Step-by-step explanation:
You add up all three numbers then divide by 3
The average lap time will be 1.15 minutes. The correct option is B.
What is an average?Average is defined as the ratio of the sum of the number of the data sets to the total number of the data. The average actually determines the middle value of the data.
Given that Cheryl ran three laps during her physical education class. If her times were 1.23 minutes, 1.04 minutes, and 1.18 minutes.
The average will be calculated as,
Average = ( 1.23 + 1.04 + 1.18 ) / 3
Average = ( 3.45 / 3 )
Average = 1.15
Hence, the average is 1.15.
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A second number is four times the first. Their sum is 50. Fine the numbers.( show work )
Answer:
Let the number(second) be "P"
The first number= 4×P = 4P
4P + P = 50
5P = 50
P = 50
5
P = 10(second number)
First number = 4×10 = 40
Therefore the numbers are 40 and 10
Dr. Burnett stocks each room in his dentist office with 300-milliliter bottles of mouthwash. If he orders five 1. 5-liter bottles of mouthwash, how many of the smaller bottles can he fill?
Answer
A little over 16.
Step-by-step explanation:
If you convert 5 liters to milli-liters, you get 5,000. You then divide 5,000 by 300 and get 16.67.
Hope this helps!
Which of the following expressions are equivalent to (x+4y)^2 check all that apply: A. x^2+8xy+16y^2 B. x^2+2xy+2y(x+2y) C. x^2+16y^2 D. x^2+4xy+4y(x+4y) Question 2. If the expression ax(2x+y-5) simplifies to 6x^2+3xy-15x, what is the value of a? Type only the numeric value into the box.
Given:
The expression is [tex](x+4y)^2[/tex].
The expression [tex]ax(2x+y-5)[/tex] simplifies to [tex]6x^2+3xy-15x[/tex].
To find:
The equivalent expression.
The value of a.
Solution:
The expression is
[tex](x+4y)^2[/tex]
Using [tex](a+b)^2=a^2+2ab+b^2[/tex], we get
[tex](x+4y)^2=x^2+2(x)(4y)+(4y)^2[/tex]
[tex](x+4y)^2=x^2+8xy+16y^2[/tex]
Therefore, the correct option is A.
The expression [tex]ax(2x+y-5)[/tex] simplifies to [tex]6x^2+3xy-15x[/tex]. So,
[tex]ax(2x+y-5)=6x^2+3xy-15x[/tex]
[tex]2ax^2+axy-5ax=6x^2+3xy-15x[/tex]
On comparing the coefficient of [tex]x^2[/tex],, we get
[tex]2a=6[/tex]
Divide both sides by 2.
[tex]a=3[/tex]
Therefore, the value of a is 3.
M is the midpoint of point A (5,4) and point B (15,0)
What is the x- coordinate of M
Answer:
x = 10
Step-by-step explanation:
Given endpoints (x₁, y₁ ) and (x₂, y₂ ) then the midpoint is
( [tex]\frac{x_{1}+x_{2} }{2}[/tex], [tex]\frac{y_{1}+y_{2} }{2}[/tex] )
Here (x₁, y₁ ) = A(5, 4) and (x₂, y₂ ) = B(15, 0) , then
M = ( [tex]\frac{5+15}{2}[/tex], [tex]\frac{4+0}{2}[/tex] ) = ( [tex]\frac{20}{2}[/tex], [tex]\frac{4}{2}[/tex] ) = (10, 2 )
The x- coordinate of M = 10
Ms. Claudius drove 196 miles in
3 hours. What was her speed in miles
per hour
A.) 56 miles per hour
B.) 58 miles per hour
C.) 62.5 miles per hour
D.) 65.3 miles per hour
The diameter of a circle is 14 inches. What is the circle's area
use 3.14 for PI
Answer:
153.86 inches²
Step-by-step explanation:
How do we find the radius of a circle?
The radius of a circle is 1/2 of the diameter, so 14/2 = 7 inchesHow do we find the area of a circle?
We can find the area of a circle by using πr², where r = radius. We're given the radius as 7 inches and pi as 3.14.Solving
[tex]3.14*7^2[/tex] [tex]3.14*49[/tex] [tex]153.86[/tex]Therefore, the answer is 153.86 inches².
Have a lovely rest of your day/night, and good luck with your assignments! ♡
The area of the circle is 153.86 square inches.
We have,
Diameter = 14 inch
Radius= 14/2 = 7 inch
Now, the formula for area of a circle,
Area = π (radius)²
Now we can calculate the area using the radius:
Area = 3.14 x (7 inches)²
Area = 3.14 x 49 square inches
Area ≈ 153.86 square inches
Therefore, the area of the circle is 153.86 square inches.
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Part A: What is the metabolism rate of a 60 kg cheetah to the nearest
tenth of a calorie per day?
Part B: Rearrange the formula to solve for m in terms of P, calories.
The metabolism rate of a 60 kg cheetah is 1580.2 calorie per day.
What is an equation?An equation shows the relationship between numbers and variables.
Given that:
[tex]P=73.3\sqrt[4]{m^3} \\[/tex]
Where P is the metabolism rate in calorie per day for m mass.
a) For m = 60:
[tex]P=73.3\sqrt[4]{60^3} \\\\P=1580.2[/tex]
The metabolism rate of a 60 kg cheetah is 1580.2 calorie per day.
b)
[tex]P=73.3\sqrt[4]{m^3} \\\\\frac{P}{73.3} = \sqrt[4]{m^3} \\\\m = \sqrt[3]{(\frac{P}{73.3} )^4}[/tex]
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Cecil sold vegetables at the farmers market on Saturday and Sunday. On Saturday, he collected twenty $1 bills, six $5 bills, four $10 bills, and five $20 bills. On Sunday, he collected thirty $1 bills, four $5 bills, five $10 bills, and one $20 bill. How much money did Cecil collect in total?
Answer:
$250.00
Step-by-step explanation:
twenty $1 bills- 20 x 1 = 20
six $5 bills- 6 x 5 = 30
four $10 bills- 4 x 10 = 40
five $20 bills- 5 x 20 = 100
thirty $1 bills- 30 x 1 = 30
four $5 bills- 4 x 5 = 20
five $10 bills- 5 x 10 = 50
one $20 bill- 1 x 20 = 20
Add the bold totals together and get the final answer of $250.00
finding measure using triangles
Answer: z=43
Step-by-step explanation:
Answer:
37°
Step-by-step explanation:
∠ABC +∠BAC +∠BCA= 180°
41° + 102° + ∠BCA= 180°
∠BCA= 37°
Find the area of the shaded sector:
123.15 ft²
[tex]\bold{area \ of \ sector = \sf \dfrac{\theta}{360} * \pi * radius^2}[/tex]
[tex]\hookrightarrow \sf \dfrac{72}{360} * \pi * 14^2[/tex]
[tex]\hookrightarrow \sf 123.15 \ ft^2[/tex]
Answer:
123.2ft rounded answer
Step-by-step explanation:
Can someone help me please
Can somebody solve this? That would be awesome, thanks
Answer:
15.5 ft
Step-by-step explanation:
C=2×pi×r
48.67=2×3.14×r
48.67÷(2×3.14)=r
r= 7.75 ft
diameter = 2× radius
diameter = 2× 7.75
d= 15.5
Hope this helps!
Sam is making a metal box as part of a sculpture. She wants to know how much metal is needed to make a box with the dimensions shown. What is the surface area of the box?
A. 18 square meters
B. 6 square meters
C. 22 square meters
D. 11 square meters
Answer:
C. 22 square meters
Step-by-step explanation:
The surface area of a rectangular prism can be found from the formula ...
A = 2(LW +H(L +W))
Filling in the given values, we have ...
A = 2(2×3 +1×(2+3)) = 2(6 +5) = 22
The surface area of the box is 22 square meters.
1. WRUF 103.7 FM is giving away tickets to a concert. Tim, the general manager of the
radio station, plans to give away upper-level and mid-level seats that cost $25 and
$40, respectively. Tim wants to give away at least 25 tickets, but he has a budget
constraint of $1,000.
part A: write a system of two inequalities that describe this situation
part B: Write one possible solution to the problem in sentence form
Answer:
Kindly check explanation
Step-by-step explanation:
Given that :
Upper level seat = $25
Mid level seat = $40
Number of tickets to give away is at least 25
Budget constraint = $1000
part A: write a system of two inequalities that describe this situation
Number of tickets constraint:
Upper level + mid level ≥ 25
u + m ≥ 25
Cost constraint :
$25u + $40m ≤ $1000
Part B:
Give away 10 upper level seat tickets and 15 mid level seat tickets
3. Scottie's Scooter Rental
rents scooters for $35.00
and $0.30 per mile. Define
the variables and write a
linear function to represent
the situation.
Answer:
The answer is y = 0.3x + 35
Step-by-step explanation:
Given;Scottie's scooter rental rents scooters for $35Extra rent for $0.3 per mileHere, 0.3 is variable and 35 is constant
So,
y = 0.3x + 35
Thus, The answer is y = 0.3x + 35
-TheUnknownScientist 72
On a coordinate plane, 5 rectangles are shown. Rectangle L M N P has points (negative 5, 1), (negative 5, 4), (negative 3, 4), (negative 3, 1). Rectangle 1 has points (negative 2, 0), (0, 0), (negative 2, negative 3), (0, negative 3). Rectangle 2 has points (1, negative 1), (1, negative 3), (4, negative 1), (4, negative 3). Rectangle 3 has points (2, 1), (2, 4), (4, 1), (4, 4). Rectangle 4 has points (0, 0), (0, 3), (2, 0), (2, 3).
Which figure represents the final image after composition ry-axis ◦ T3, -1 is applied to rectangle LMNP?
1
2
3
4
Answer:
On a coordinate plane, 5 rectangles are shown. Rectangle L M N P has points (negative 5, 1), (negative 5, 4), (negative 3, 4), (negative 3, 1). Rectangle 1 has points (negative 2, 0), (0, 0), (negative 2, negative 3), (0, negative 3). Rectangle 2 has points (1, negative 1), (1, negative 3), (4, negative 1), (4, negative 3). Rectangle 3 has points (2, 1), (2, 4), (4, 1), (4, 4). Rectangle 4 has points (0, 0), (0, 3), (2, 0), (2, 3).
Which figure represents the final image after composition ry-axis ◦ T3, -1 is applied to rectangle LMNP?
1
2
3
4
it is number 4
Answer:
4
Step-by-step explanation:
What is the recursive formula for the sequence defined by the explicit equation an = -6 + 3n?
Answer:
an=an-1
Step-by-step explanation:
as it doesnt have -6 +3n
Kaylee bought three pounds of strawberries for $24.00. What is the price, in dollars
per ounce of strawberries?
1 pound = 16 ounces
Before you try that problem, answer the question below.
How many ounces of strawberries did Kaylee buy?
Answer: 0.50 cents per ounce. The amount of ounces is 48.
Step-by-step explanation: hope this helps
Answer:
Kaylee bought 48 and the price is $0.50
Step-by-step explanation:
1 pound = 16 oz
so 3 pounds = 48 oz
And then you get $0.50 when you doa step by step explanation comment if you need to know how.
On the last day of school, Kendrick wants to bring in homemade breakfast biscuits for his classmates. He makes a batch of 25 biscuits using 8 cups of flour. How much flour is in each biscuit?
Answer:
0.32 Cups of flour.
Step-by-step explanation:
Since He made a batch of 25 biscuits using 8 cups of flour, then each biscuit contain 8/25 Cups of flour.
In each biscuit, there are 8/25 cups of Flour.
What are mathematical operations?The term "operation" in mathematics refers to the process of computing a value utilizing operands and a math operator. For the specified operands or integers, the math operator's symbol has predetermined rules that must be followed. In mathematics, there are five basic operations: addition, subtraction, multiplication, division, and modular forms.
Given, On the last day of school, Kendrick wants to bring in homemade breakfast biscuits for his classmates.
Since,
He makes a batch of 25 biscuits using 8 cups of flour.
So,
For 25 biscuits, it required flour = 8 cups
Thus, from the proportionality
For 1 biscuit, it required flour = 8/25 cups
Therefore, there are 8/25 cups of flour is in each biscuit.
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Which expression is equivalent to 1/2(16x+2)+5?
A:8x+6
B:8x+7
C:14x
D:15x
Answer:
A is the answer!
Use the equation for variance below, along with the given data set, to answer the following questions. sigma squared = startfraction (x 1 minus mu) squared (x 2 minus mu) squared ellipsis (x n minus mu) squared over n endfraction what does the numerator evaluate to? what does the denominator evaluate to? the variance equals:
The given equation will be [tex]\sigma ^2=\dfrac{(x_1-\mu)^2+(x_2-\mu)^2+...........(x_n-\mu)^2}{N}[/tex]
What will be the value of variance?From given data - sigma squared = start fraction (x 1 minus mu) squared (x 2 minus mu) squared ellipsis (x n minus mu) squared over n end fraction
The equation formed will be
[tex]\sigma ^2=\dfrac{(x_1-\mu)^2+(x_2-\mu)^2+...........(x_n-\mu)^2}{N}[/tex]
What does the numerator evaluate-
The numerator contains the difference between the data and the mean which means that it shows how much the data is varied from its mean.
What does the denominator evaluate to?
The denominator represents the number of the given data. It is the total number of data given for the analysis.
The variance is the variation of each data from its mean.
Thus The given equation will be
[tex]\sigma ^2=\dfrac{(x_1-\mu)^2+(x_2-\mu)^2+...........(x_n-\mu)^2}{N}[/tex]
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Answer:
94, 5, 18.8
Step-by-step explanation:
second part: 4.34