1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
VLD [36.1K]
3 years ago
5

Jessica is asked to write a quadratic equation to represent a function that goes through the point (8, –11) and has a vertex at

(6, –3). Her work is shown below. –11 = a(8 – 6)2 – 3 –11 = a(2)2 – 3 –11 = 4a – 3 –8 = 4a a = –2 After Jessica gets stuck, she asks Sally to help her finish the problem. Sally states that Jessica needs to write the quadratic equation using the value she found for a, –2, and the point (8, –11). Evaluate Jessica’s work and Sally’s review to determine which statement is true.
1. Jessica did not solve for the correct value of a, but Sally’s review is correct.
2. Jessica did not solve for the correct value of a, and Sally’s review is incorrect.
3. Jessica solved for the correct value of a, but Sally’s review was incorrect.
4. Both Jessica’s work and Sally’s review are correct. The equation is f(x) = –2(x – 8)2 – 11.
Mathematics
2 answers:
Lostsunrise [7]3 years ago
8 0

Answer:

Jessica’s work is correct and Sally’s review is incorrect

Step-by-step explanation:

I'm just assume it's a vertical parabola we know that The equation of a vertical parabola in vertex for is equal to where (h,k) is the vertex In this problem we have point substitute To find the equation using the value of a and the vertex point so therefore

Jessica’s work is correct and Sally’s review is incorrect

vesna_86 [32]3 years ago
5 0

the answer is c. I just did the review

You might be interested in
Hannah's school hosted a book donation. There are 150 students at her school, and they donated a total of b books! Hannah donate
svetoff [14.1K]

Answer:

x=3*\dfrac{b}{150}

Step-by-step explanation:

Let x = number of books that Hannah donated

We know that the number of students is 150 and the total number of books is represented by b, we can write that as:

Average number of books donated by each student = \dfrac{b}{150}

Now we know that Hannah donated 3 times as much as the average. We can write that as:

x=3*\dfrac{b}{150}

4 0
3 years ago
Explain step by step please!
adelina 88 [10]

Answer:

Each book weighs 2.5 pounds.

Step-by-step explanation:

75/2.5 is 30.  Or you could also get the answer by 30* 2.5 which it would be 75. So, therefor, the answer is 2.5.

5 0
3 years ago
Read 2 more answers
Solve the inequality and graph the solution on the line provided.
jeka57 [31]

i hope this helps you......

3 0
3 years ago
Read 2 more answers
A student solving for the acceleration of an object has applied appropriate physics principles and obtained the expression a=a1+
egoroff_w [7]

Answer:

a=\frac{3\times 7}{7}+\frac{12}{7}  (First step for obtaining a common denominator for the two fraction)

a=\frac{33}{7}\text{ m/s}^2

Step-by-step explanation:

\text{Given Expression: }a=a_1+\frac{F}{m}

where,

a is acceleration of an object.(Need to calculate)

a_1=3.00\text{ m/s}^2

F=12.0\text{ Kg.m/s}^2

m=7.00\text{ kg}

\text{Substitute }a_1, \text{ F, and m into expression and we get}

a=3+\frac{12}{7}

Now we will simplify above expression for a

First we make common denominator.

Common denominator is 7. So, we make both denominator 7. We multiply by 7 at top and bottom with 3. We get

a=\frac{3\times 7}{7}+\frac{12}{7}  (First step for obtaining a common denominator for the two fraction)

Now we combine the numerator

a=\frac{21+12}{7}

a=\frac{33}{7}\text{ m/s}^2



3 0
3 years ago
Read 2 more answers
Please help me with these 2 questions!!
IceJOKER [234]

Answer: 53. B similar

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Other questions:
  • Calculate the mean, variance, and standard deviation of the following discrete probability distribution.(Negative values should
    10·1 answer
  • Why is looking at cash flow an important step in a good financial plan?
    15·2 answers
  • How many times does this number go into that number
    7·2 answers
  • Equation equivalent to r=1+2sin Ø
    12·1 answer
  • Need some help with this
    6·2 answers
  • At the high school championship game, the Cougars beat the Lions 31 to 17. The total score came from 14 scoring plays. The scori
    9·1 answer
  • Is {(5,0),(2,0),(4,1),(0,9),(9,1)} a function?
    5·1 answer
  • to reduce 56 grams of a 70% antiseptic solution, to a 20% solution how much distilled water should a pharamasict add?
    6·2 answers
  • Which graph repreWhich value can fill in the blank in the function f(x) = ____|x| to make its graph wider than that of the paren
    11·1 answer
  • Seven million five hundred and forty-two eight hundred in number form pls
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!