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
IRISSAK [1]
3 years ago
10

Find by completing the square

Mathematics
1 answer:
Katyanochek1 [597]3 years ago
5 0
y=ax^2+bx+c\\\\y=a(x-h)^2+k\ where\ h=\dfrac{-b}{2a};\ k=f(h)=\dfrac{-(b^2-4ac)}{4a}[tex]y=-3x^2+7x-5\\\\a=-3;\ b=7;\ c=-5\\\\h=\dfrac{-7}{2\cdot(-3)}=\dfrac{7}{6}\\\\k=\dfrac{-(7^2-4\cdot(-3)\cdot(-5)}{4\cdot(-3)}=\dfrac{-49+60}{-12}=-\dfrac{11}{12}\\\\y=-3\left(x-\dfrac{7}{6}\right)^2-\dfrac{11}{12}


You might be interested in
Help with these please! Need to do them ASAP !!
saw5 [17]
Debbie is correct because you can not a percentage of a person therefore you have to round it, and if there was 5,000 female athletes in 2008 and 4,700. If you take 5,000 and subtract 4,700; the answer is 300.
5 0
3 years ago
Read 2 more answers
two riders rode a total of 165 miles. if they replaced each horse with a fresh horse every 11 miles, how many horses would they
shusha [124]

They would have used a total of 30 horses. Each person would've each ridden 15 so 15+15= 30 and 165 divided by 11 is 15. Hope this is off help!

3 0
4 years ago
A teacher tells 6 students the title of the next school play. Those 6 students each tell the title to 6 students. Then those add
Sergio [31]
18 students have been told the title of the next play because 6+6+6=18
3 0
3 years ago
The cost of renting the party room at a restaurant is $50.00. Snacks cost $13.50 per person. Write an expression to describe the
alexandr1967 [171]

Answer:an expression to describe the total cost of a party is written as

y = 13.50p + 50

Step-by-step explanation:

The cost of renting the party room at a restaurant is $50.00. Snacks cost $13.50 per person. Assuming the total number of persons invited for the party is p, and the total cost of renting the party room is y. Therefore an expression to describe the total cost of a party is written as

y = 13.50p + 50

The $50 always remains constant

3 0
3 years ago
Solve: 3/5y + 3 = 11 + 1/5y
ale4655 [162]

Answer:

Y=20

Step-by-step explanation:

y equals 20 because you simplify both sides of the equation then you have an isolated variable

7 0
3 years ago
Read 2 more answers
Other questions:
  • What number has the same value as 14 tens
    11·1 answer
  • Which of the expressions are equivalent to the one below? Check all that apply 7 (6 + 3)
    7·1 answer
  • Find the zeros of the function.<br> f(x) = 9x^3 + 18 x^2 - 135x
    9·1 answer
  • A figure is dilated by a scale factor of 12. If the origin is the center of dilaton, what is the image of a vertex located at (3
    14·1 answer
  • A computer store buys a computer system at a cost of ​$370.80. The selling price was first at $618 ​, but then the store adverti
    12·2 answers
  • True or False? A circle could be circumscribed about the quadrilateral below.
    12·2 answers
  • What is the difference between an expression and an equation? Provide an example of each.
    15·2 answers
  • The ratio of the number of cookies to the number of pastries in a box is 3:2 which table shows the possible amount of cookies in
    8·2 answers
  • 1.02 = _____ hundredths
    6·1 answer
  • Answer this please !
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!