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
Leni [432]
3 years ago
11

Find the vertex of the graph of f(x) = x2 + 4x - 5.

Mathematics
1 answer:
Fofino [41]3 years ago
7 0
You can solve this in two ways.

1. Graphical. Plot the graph for x between -5 and 1 (see attachement).
The vertex of the graph is the peak of the curve, which has the coordinates x=-2, y=-9.

2. Analytical. Calculate the derivative of the function f(x)
\frac{df}{dx}=2x+4
Solve the equation:
2x+4=0
will give the solution x=-2.
Replace x=-2 in the f(x) function and you'll get the value of y:
(-2)^2+4 \cdot (-2)-5=4-8-5=-9

You get the same answer: x=-2, y=-9

So the answer is
<span>B. (-2, -9)</span>

You might be interested in
PLEASE HELP If a bottle of medicine contains 10 grams of liquid, how many 1/5 gram doses are in the bottle?
Nimfa-mama [501]

Answer:

A. 50 doses

Step-by-step explanation:

Take your total and divide by the about needed per dose.

8 0
3 years ago
ASAP HELP ME GIVING BRAINLIEST
Natasha2012 [34]

Answer:B

Step-by-step explanation:

The quadratic formula can be used to solve an equation only if the highest degree in the equation is 2

7 0
3 years ago
3 2/5+3 2/5/2 1/12 what is theeeeee answerrrr
Alex73 [517]

Answer:

the awnswer is 5.032\

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Can anyone heelp me plzzzz plzzzz
Elenna [48]

Answer:

no entiendo :C

Step-by-step explanation:

5 0
3 years ago
Is the sum of two rational numbers rational
Advocard [28]

Answer:

no they are irrational

6 0
2 years ago
Other questions:
  • Is the square root of 9 less than 3.54
    8·2 answers
  • To make orange paint, Roger next 5/8 cup of red paint to his cup of yellow paint. He really likes of the resulting color and wan
    8·1 answer
  • What is the first step to solving this<br> equation?<br> 3x+10=7x-2
    6·2 answers
  • A 6.5 foot long piece of wood is cut into 5 sections. how long is each section?
    6·2 answers
  • (1) The three salespeople for a local advertising firm are Lola, Ahmed, and Tommy. Lola sold $2030 in ads, Ahmed sold $1540, and
    11·2 answers
  • PLEASE ANSWER RIGHT AWAY
    8·1 answer
  • 1) What part of 20 is 5?<br> 2) What part of 20 is 12?
    8·1 answer
  • What is 15% of 15% of 15% of 500
    12·2 answers
  • Clean123 Inc. is preparing its balance sheet. It has $59,000 in accounts receivable, $32,000 in accounts payable, $41,000 in not
    8·1 answer
  • Suppose your class is planning a trip to a museum for 40 students. The cost of admission is $7 per person. The cost of renting a
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!