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
Alexxx [7]
2 years ago
12

The number of customers in a grocery store is modeled by the function y -X? + 10x + 50, where y is

Mathematics
1 answer:
vova2212 [387]2 years ago
7 0

Using the vertex of the quadratic function, it is found that:

a) The maximum number of customers in the store is at 12 P.M.

b) 75 customers are in the store at this time.

The number of customers in x hours after 7 AM is given by:

y = -x^2 + 10x + 50

Which is a quadratic equation with coefficients a = -1, b = 10, c = 50

Item a:

The maximum value, considering that a < 0, happens at:

x_v = -\frac{b}{2a}

Hence:

x_v = -\frac{10}{2(-1)} = 5

5 hours after 7 A.M, hence, the maximum number of customers in the store is at 12 P.M.

Item b:

The value is y(5), hence:

y(5) = -(5)^2 + 10(5) + 50 = 75

75 customers are in the store at this time.

A similar problem is given at brainly.com/question/24713268

You might be interested in
4.Rebecca biked 4.5 miles today and 3.2 miles
Fudgin [204]

Answer:

10-(4.5+3.2)

= 10-7.7

=2.3 miles

6 0
3 years ago
At a football game
natka813 [3]
1884 i think the answer is-
3 0
3 years ago
Read 2 more answers
Assume the sample is a random sample from a distribution that is reasonably normally distributed and we are doing inference for
e-lub [12.9K]

Answer:

a) Hence the endpoints of a t-distribution with 5% beyond them in each tail if the sample has size n=12 is ± 1.796.

b) Hence the endpoints of a t-distribution with 1% beyond them in each tail if the sample has size n=20 is ± 2.539.

Step-by-step explanation:

Here the answer is given as follows,

5 0
2 years ago
The APR of Estelle's savings account is 4.5% but interest is compounded only once a year. what is the APY of Israel's savings ac
Tems11 [23]
4.5% is the answer to yo problem ..
8 0
3 years ago
Read 2 more answers
Round each number to the place of the underlined digit the 4 is underlined in 324,650
dolphi86 [110]

Answer:325,000


Step-by-step explanation:

4 gets rounded up to 5 because of the 6 next to it.

7 0
3 years ago
Other questions:
  • Pedro and Natalia play the trumpet. Pedro
    14·2 answers
  • Help!! This is urgent. I don’t get this
    14·1 answer
  • Graph the equation <br><br> f(x)= 4(x)+5
    9·2 answers
  • A recipe calls for 3/5 cup of sugar for every 2 1/3 teaspoons of vanilla. What is the unit rate in cups per teaspoon?
    13·1 answer
  • Y=x-4 2x+y=5 solve each system of linear equations by substitution
    14·2 answers
  • What is the slope and unit rate
    7·1 answer
  • X-5 divided by 7 =-1 X=?
    9·1 answer
  • 3x√64= please help meee
    7·2 answers
  • Attachment Below: Please help!
    12·2 answers
  • Someone help and please make sure it’s right
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!