What is the equation in vertex form of the quadratic function with a vertex at (-1,-4) that goes through (1,8)?
Answers
Answer:
G
Step-by-step explanation:
vertex formula = a(x-h)^2 + k
vertex is (h, k) so (-1, -4) means
y = a(x+1)^2-4
passes through (1, 8) so when x = 1 and y = 8
8 = a(1+1)^2-4 = 4a - 4
4a = 4
a = 1
Related Questions
Robert has attended 32 out of 40 after school band practices this year based on his record of attendance which is the probability that Robert will attend band practice in the future?
Answers
Answer:
4/5
Step-by-step explanation:
32/40 is how often he has come so far. You would need to simplify that fraction down to the lowest, which is 4/5.
There are 20 pieces of candy in the box. If 15 of them are hard candies, what percentage of the candies in the box are hard candies?
Answers
Answer:percentage of the candies in the box that are hard candies=75%
Step-by-step explanation:
Total pieces of candy in the box=20
Number of candies that are hard =15
Percentage of candies that are hard =Number of candies that are hard / Total pieces of candy in the box x 100
= 15/20 x 100
=75%
In order to help students improve their reading, a school district decides to implement a reading program. It is to be administered to the bottom 5% of the students in the district, based on the scores on a reading achievement exam. If the average score for the students in the district is 122.6, find the cutoff score that will make a student eligible for the program. The standard deviation is 18. Assume the variable is normally distributed. Round to two decimal places.
Answers
Answer:
92.99
Step-by-step explanation:
Mean, μ = 122.6
Standard deviation, σ = 18
Recall :
Z = (x - μ) / σ
x = score
The Zscore for the lower 5% = 0.05
Using, invnorm(0.05) = - 1.645
Put Z = - 1.645
-1.645 = (x - 122.6) / 18
-1.645 * 18 = x - 122.6
-29.61 = x - 122.6
-29.61 + 122.6 = x
x = 92.99
Please don’t report I need help. I’m going to be a high school sophomore next fall and I’m selecting my courses should I take Geometry I or Algebra II?????
Answers
Answer:
I would say geometry. its easier
Need help ASAP! I’m very confused!
Answers
Answer:
4 would be your answer
Step-by-step explanation:
brainlesit pls
12. A number from 1-30 is chosen at random.
What is the probability that the number is
not a prime number?
Answers
Answer:
2/3
Step-by-step explanation:
let S be number of sample space
n(S)= 30
n(not prime number) =20
Pr(not prime number)=20/30
=2/3
The linear model d = 0.15+.35t represents the data found for the dive of a local swim team where t represents the duration of the dive in seconds and d is the depth of the dive in feet.
What does the slope represent?
A
That if the dive was increased by 1 second, the depth would increase by about .15 feet.
B
That if the dive was increased by 1 second, the depth would increase by about .35 feet.
C
That if the dive was increased by .15 seconds, the depth would increase by about 1 foot.
D
That if the dive was increased by 35 seconds, the depth would increase by about 1 foot.
Answers
Answer:
B That if the dive was increased by 1 second, the depth would increase by about .35 feet.
Step-by-step explanation:
The coefficient of the variable represents the rate of change
.Un recipiente cilíndrico de 5cm de radio y 10cm de altura se llena de agua. Si la masa del recipiente lleno es de 2kg, ¿cuál es la masa del recipiente vacío?
Answers
Answer:
La masa del recipiente vacío es 1,2146 kg.
Step-by-step explanation:
La densidad se define como la propiedad que tiene la materia, ya sean sólidos, líquidos o gases, para comprimirse en un espacio determinado. En otras palabras, la densidad es una magnitud que permite medir la cantidad de masa que hay en determinado volumen de una sustancia. Entonces, la expresión para el cálculo de la densidad es el cociente entre la masa de un cuerpo y el volumen que ocupa:
[tex]densidad= \frac{masa}{volumen}[/tex]
Entonces la masa puede ser expresada como:
masa= densidad*volumen
En este caso:
densidad del agua= 1000 [tex]\frac{kg}{m^{3} }[/tex]volumen del recipiente cilíndrico= π*radio²*altura= π*(5 cm)²* 10 cm= π*(0,05 m)²*0,1 m= 7,854*10⁻⁴ m³Reemplazando:
masa= 1000 [tex]\frac{kg}{m^{3} }[/tex] * 7,854*10⁻⁴ m³
masa=0.7854 kg
Si la masa del recipiente lleno es de 2 kg, entonces se le resta la masa de agua calculada:
2 kg - 0,7854 kg= 1,2146 kg
Entonces, la masa del recipiente vacío es 1,2146 kg.
! URGENT EMERGENCY !
what is the value of x and y
Answers
please answer the following question
Answers
Step-by-step explanation:
volume= y×9×10=2700
90y=2700
y= 2700/90
y= 30 cm
solve for x
I tried 10 but it said that it was incorrect
Answers
Answer:
5
Step-by-step explanation:
(5 + x)5 = (2 + 23)2
25 + 5x = 50
5x = 25
x = 5
hi pls, help me with this, I am giving 15 points 10 for answering the question and 5 for telling me what is Q1 meaning and Q2 meaning ty!
The table below shows 10 data values:
125, 138, 132, 140, 136, 136, 126, 122, 135, 121
What values of minimum, Q1, median, Q3, and maximum should be used to make a box plot for this data?
A.) Minimum = 121, Q1 = 125, median = 133.5, Q3 = 136, maximum = 140
B.) Minimum = 121, Q1 =136, median = 133.5, Q3 = 125, maximum = 140
C.) Minimum = 125, Q1 = 130.25, median = 132.5, Q3 = 134.5, maximum = 138
D.) Minimum = 125, Q1 =134.5, median = 132.5, Q3 = 130.25, maximum = 138
Answers
Answer:
we have to put the numbers in order..
(121,122,125, 126,132),M,(135,136,136,138,140)
Step-by-step explanation:
minimum : (smallest number) = 121
Q1 : 125
Q2 (median) : (132 + 135) / 2 = 267/2 = 133.5
Q3 : 136
maximum : (largest number) = 140
I did this a long time ago so im not so sure
Answer:
Step-by-step explanation:
121 122 125 126 132 135 136 136 138 140
140 -121 =19 range
Min=121 max =140
Mean = 131.1
Median = 132+135=267/2=133.5
HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP
HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP HELP I NEED HELP ASAP
A. Region 3
B. Region 1
C. Region 4
D. Region 2
Answers
Answer:
B. Region 1
Step-by-step explanation:
because it is how much is their
Answer: region 3 i believe
Step-by-step explanation:
There were 24 students running in a race. How many different arrangements of first,
second, and third place are possible?
Answers
24P3
Use Permutation Formula
Suppose that AKL M is isosceles with base MK.
Suppose also that m 2 M= (3x+36) and m 2 K = (4x +31)
Find the degree measure of each angle in the triangle.
m ZK = 0
m 2L =
m ZM =
MA
K
(3x +36)
(4x +31).
Х
Answers
Answer:
m<K = 51°
m<L = 78°
m<M = 51°
Step-by-step explanation:
Base angles of an isosceles ∆ are equal to each other, therefore,
m<M = m<K
Substitute
3x + 36 = 4x + 31
Collect like terms and solve for x
3x - 4x = -36 + 31
-x = -5
Divide both sides by -1
x = 5
Let's find each degree measure using the value of x
m<K = 4x + 31
Plug in the value of x
m<K = 4(5) + 31
m<K = 20 + 31
m<K = 51°
m<M = 3x + 36
= 3(5) + 36
= 15 + 36
m<M = 51°
m<L = 180° - (m<M + m<K) (sum of triangle theorem)
Substitute
m<L = 180 - (51 + 51)
m<L = 78°
5. Miguel has an after-school job. He works
between 15 and 25 hours each week and is paid
$12 per hour. What is an appropriate domain for
this scenario?
A. All real numbers such that 15
B. All real numbers such that 180 < x < 300
C. All real numbers
D. All real numbers such that x>0
Answers
Answer:
The domain is 15 ≤ x ≤ 25
Step-by-step explanation:
The given parameters are;
The number of hours Miguel works each week = Between 15 and 25 hours
The amount he is paid per hour = $12
Therefore, we have;
The domain is all real numbers, 'x', such that 15 ≤ x ≤ 25
The amount Miguel makes each week, 'y' is between; 12 × 15 ≤ A ≤ 12 × 25
Therefore the range is 180 ≤ y ≤ 300.
The diameter of a circular swimming pool is 15 feet. Find the circumference.
Answers
I did this last year :))
PLEASE HELP
Write the number in standard form:
6.7 × 10^9
Answers
Answer:
6700000000
Step-by-step explanation:
6.7×10^9
(67×10^-1) × (10^9)
(67×)^-1+9
67^8
6700000000
Which is the inverse of the difference of 1/3-1/4?
A.0/1
B.1/12
C.7/12
D.12/1
Answers
Answer:o/1
Step-by-step explanation:
Hello! i need help finding the value of x could somebody help?
Answers
Answer:
lkrkfkfkfnfnfnfnfnf
These are vertical angles since they are opposite angles made by two intersecting lines. And vertical angles are congruent so we would set them equal to each other.
6x-19 = 3x + 32
Subtract 3x from both sides.
3x - 19 = 32
To isolate 3x on one side add 19 to both sides.
3x= 51
Divide by 3 on both sides.
X = 17
plsssssssssssss help
Answers
Answer:
4
Step-by-step explanation:
Answer:
4
Step-by-step explanation:
none of the others match to the red triangle
Give the following sequence for f(x) = 4x^2 - x , when x is -4, 1, 2
O 58, 14, 3
0-64, - 14, 3
O 68, 14, 3
0 7, 14, 3
Answers
Answer:
O 68, 14, 3
Step-by-step explanation:
Given:
f(x) = 4x² - x
When x = -4
f(x) = 4x² - x
= 4(-4)² - (-4)
= 4(16) + 4
= 64 + 4
f(x) = 68
When x = 1
f(x) = 4x² - x
= 4(1)² - 1
= 4(1) - 1
= 4 - 1
f(x) = 3
When x = 2
f(x) = 4x² - x
= 4(2)² - 2
= 4(4) - 2
= 16 - 2
f(x) = 14
The answer = 68, 3, 14
which number line shows the soulution
Answers
Answer:
The answer is C.
HELPPP PLEASE
Also I used line A as a place holder I don’t know if it’s right
Answers
Answer:
Line A is the right answer.
Answer:
a is right linear means straight line
Step-by-step explanation:
The sides of a rectangle are in the ratio 5:3. If the perimeter of the rectangle is 640 meters, how long is each side? Please answer I need this for my homework and it’s due today
Answers
Answer: sorry but i need this points but you got this sorry
Step-by-step explanation:
Answer:
200 and 120
Step-by-step explanation:
(5x + 3x )*2 = 640
8x = 320
x = 40
5*40 = 200
3*40 = 120
8.92 kilograms equal how many decigrams
Answers
Answer:
89200
Step-by-step explanation:
Have a nice day
ASAP PLEASE ‼️‼️❗️‼️‼️❗️
A group of 25 people are going to run a race. The top 12 finishes advance to the finals. find the of possibilities.
Answers
Answer:
I dont know what thats asking
Step-by-step explanation:
The product of -3.5 and a number, n is greater than 17.5
Answers
Answer:
n > 5
Step-by-step explanation:
3.5n > 17.5, or
n > 5
A sphere has a diameter of 10 in. What is the volume of the sphere?
V = StartFraction 125 Over 3 EndFraction inches cubed
V = StartFraction 500 Over 3 EndFraction inches cubed
V = StartFraction 500 Over 3 EndFraction pi inches cubed
V = StartFraction 4,000 Over 3 EndFraction pi inches cubed
Answers
Answer: The answer is B, or the second "v" lol
Step-by-step explanation:
Answer:
its A
Step-by-step explanation:
✔️V = 125 Over 3 inches cubed
V = 500 Over 3 inches cubed
V = S 500 Over 3 pi inches cubed
V = 4,000 Over 3 pi inches cubed
Evaluate Expression
Answers
Answer:
72
Step-by-step explanation:
a-3(b) where a=6 and b=-4
6-3(-4)
6(12)
= 72