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
vampirchik [111]
2 years ago
6

Consider the quadratic function: f(x) = x2 – 8x – 9

Mathematics
1 answer:
Bumek [7]2 years ago
7 0

Solved in quadratic function
The answer :
X=(9,-1)
You might be interested in
2xsquare-6x+3=0 by completing square method
Arturiano [62]

Answer:

x = 2.36603 or 0.633975

Step-by-step explanation:

Here we want to solve the quadratic equation using the completing the square method.

2x^2-6x + 3 = 0

divide through by 2 first;

x^2 -3x + 3/2 = 0

x*2 -3x = -3/2

Half the x term will be -3/2 and squaring it is 9/4

we add this to both sides

x^2-3x/2 + 9/4 = -3/2 + 9/4

(x-3/2)^2 = 3/4

Finding square root of both sides

x-3/2 = √(3/4)

x = 3/2 ± √(3/4)

x = 3/2 + √(3/4) or x = 3/2-√(3/4)

which becomes

x = 2.36603 or 0.633975

5 0
3 years ago
Ty collects coins from all over the world.He had 25 coins and received 14 on his birthday.What was the percent increase in coins
Ugo [173]
SOLUTION:

Amount added / Original amount × 100% = % increase

14 / 25 × 100 = 56%

FINAL ANSWER:

Therefore, the percentage increase in coins is 56%.

Hope this helps! :)
6 0
2 years ago
If 2(x + 3) = x + 10, then x equals what
Rama09 [41]

Answer:

x=4

Step-by-step explanation:

To solve this problem you must apply the proccedure shown below:

1. You need to apply the Distributive property on the left member of the equation:

2(x + 3) = x + 10\\ 2x+6=x+10

2. Now, you must solve for x, as following:

2x-x=10-6\\ x=4


8 0
3 years ago
Find the solution of the system of equations 2x-4y=32 2x-8y=48
Sveta_85 [38]
<span>2x-4y=32
2x-8y=48
--------------subtract
4y = - 16
y  = -4

</span>2x-4y=32 
2x- 4(-4)=32 
2x + 16 = 32
2x = 16
x = 8

answer
(8, -4)
6 0
3 years ago
Read 2 more answers
If
Svetllana [295]
2x8x40=$160 which is the labour cost
revenue=$2000
therefore the labor cost as a percentage of Revenue is ($160/$2000) x 100
which equals 8%
8 0
3 years ago
Other questions:
  • Find the absolute value<br><br><br> l-63.89l=??
    14·1 answer
  • PLEASE HELPPPPPP!!!!!
    12·2 answers
  • After a 70% ​reduction, you purchase a new soft drink machine on sale for ​$180. what was the original price of the soft drink m
    6·1 answer
  • 30 divide by 2438 long division
    11·1 answer
  • What value of x is in the solution set of 3(x-4) &gt; 5x +2<br><br>-10<br>-5<br>5<br>10<br>​
    5·1 answer
  • Determine the quadratic function given the graph​
    14·1 answer
  • A boat heading out to sea starts out at
    8·1 answer
  • Which of the following best represent the graph of the inequality shown below?
    5·1 answer
  • What is the value of X enter your answer in the box
    6·1 answer
  • Cash deposit into Nepal bank Rs. 50000​<br> ?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!