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
TiliK225 [7]
3 years ago
11

What is the x-value of the vertex of f(x) = -x2 + 9x - 11 ?

Mathematics
2 answers:
Lemur [1.5K]3 years ago
7 0

Answer:

at the vertex x = 4.5

Step-by-step explanation:

Bogdan [553]3 years ago
6 0

Answer:

at the vertex x = 4.5

Step-by-step explanation:

hope this helps! :)

You might be interested in
Divide (28x5 + 29x4 + 5x3 + 86x2 + 56x + 53) by (–4x – 7) using synthetic division.
bixtya [17]

Answer:

 -7x⁴+5x³-10x²-4x-7 - 4/4x+7

Step-by-step explanation:

Given the division problem, (28x⁵ + 29x⁴ + 5x³ + 86x² + 56x + 53) by (–4x – 7), find the solution in the attachment below.

The polynomial of a function is expressed as P(x) = Q(x) + R(x)/D(x)

Q(x) is the quotient

R(x) is the remainder

D(x) is the divisor

Accordin gto the divsion, Q(x) = -7x⁴+5x³-10x²-4x-7

R(x) = 4

D(x) = -4x-7

Substituting this functions in the polynomial P(x);

P(x) =  -7x⁴+5x³-10x²-4x-7 - 4/4x+7

5 0
3 years ago
5. If the tree's circumference is 141.3ft, what is its diameter?
BigorU [14]

Answer:

d ≈ 45 ft

General Formulas and Concepts:

<u>Symbols</u>

  • π (pi) ≈ 3.14

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right  

Equality Properties

  • Multiplication Property of Equality
  • Division Property of Equality
  • Addition Property of Equality
  • Subtraction Property of Equality<u> </u>

<u>Geometry</u>

  • Circumference of a Circle Formula: C = πd

Step-by-step explanation:

<u>Step 1: Define</u>

Circumference <em>C </em>= 141.3 ft

<u>Step 2: Solve for </u><em><u>d</u></em>

  1. Substitute in <em>C</em> [Circumference Formula]:                                                       141.3 ft = πd
  2. Substitute in π (approximation):                                                                      141.3 ft ≈ 3.14d
  3. [Division Property of Equality] Divide both sides by 3.14:                              45 ft ≈ d
  4. Rewrite:                                                                                                             d ≈ 45 ft
7 0
3 years ago
Read 2 more answers
Ten times anumber increased by four is no more than twenty-five
Rus_ich [418]
Here is the inequality you are describing: 

10x+4≤25

Where x is the "number" you are describing.
4 0
3 years ago
Read 2 more answers
Find the percent increase from 200 to 260
Bezzdna [24]

Answer:

the percent increase is by 30%

Step-by-step explanation:

30% of 200 equals 60

3 0
3 years ago
Read 2 more answers
W is how many units?
lidiya [134]
W is 5 units
w=(P-2l)/2
w=(30-2(10))/2
w=(30-20)/2
w=(10)/2
w=10/2
w=5
7 0
4 years ago
Other questions:
  • Rewrite number without radicals or exponents
    8·1 answer
  • Which expression is equivalent to 2x2 – 2x + 7?
    5·2 answers
  • The local skating rink pays Mary a fixed rate per pupil plus a base amount to work as a skating instructor. She earns $90 for in
    9·1 answer
  • You earn $42 for babysitting for 6 hours. How much money did you earn per hour
    9·1 answer
  • What is 35/17 rounded to the nearest hundreth
    10·1 answer
  • Do you think I have hazel or green eyes? They are mostly green but have a brown/yellow around the pupil.
    12·2 answers
  • What does 5 times 55 dived by 60 plus 207 equal?
    13·2 answers
  • The record for the Boston Marathon's wheelchair division is one hour 18 minutes and 27 seconds. The Boston Marathon is 26.2 mile
    10·1 answer
  • 1/3x^2-5=7 what is x
    10·1 answer
  • .Let's say you solve an equation like 3x + 5 = x + 7 and your solution is x = 1. How could you check to make sure your answer is
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!