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
Neko [114]
2 years ago
11

What value should be added to both sides for completing the square in this equation?

Mathematics
1 answer:
Mila [183]2 years ago
3 0

Hey there!

x^2 + 4x = 12

SUBTRACT 12 to BOTH SIDES

x^2 + 4x - 12 = 12 - 12

SIMPLIFY IT

x^2 + 4x - 12 = 0

FACTOR the LEFT SIDE of your EQUATION

(x - 2)(x + 6) = 0

• EQUATION #1: x - 2 = 0

OR

• EQUATION #2: x + 6 = 0

SIMPLIFY IT

• EQUATION #1 answer: x = 2

OR

• EQUATION #2 answer: x = -6

OVERALL ANSWER: x = 2 or x = -6

YOUR ANSWER: x = 2 (Option A.)

Good luck on your assignment and enjoy your day!

~Amphitrite1040:)

You might be interested in
The Millers drove 150 miles in 3 hours. At this rate, how long will it take them to drive 400 miles?
netineya [11]

Answer:

It will take 8 hours to drive 400 miles

Step-by-step explanation:

The millers drive 50 miles an hour. So we can write the proportion 1/50 = x/400. Then we solve for x and get 8 hours.

6 0
3 years ago
When a ferry boat is on open water, it travels at a constant speed. A ferry boat traveled 4 miles in 10 minutes. Complete the eq
ozzi

Answer:

The equation is: y=0.4x

The relationship between  the time in minutes, t, and the distance traveled in miles, d is a straight line, as shown in attached graph.

Step-by-step explanation:

As boat travels at constant speed.

So, if ferry boat travels 4 miles in 10 minutes. It means it would complete 24 miles in one hour.

And in 1 minute, 0.4 miles will be completed.

So, the equation becomes

y=0.4x

As the slope intercept form is y=mx+c

So, m=0.4 is the slope

The relationship between  the time in minutes, t, and the distance traveled in miles, d is a straight line i.e. linear.

The graph is also attached which indicates that relationship between  the time in minutes, t, and the distance traveled in miles, d is a straight line i.e. linear.

Keywords: speed, time, graph

Learn more about speed and time from brainly.com/question/1969153

#learnwithBrainly

4 0
3 years ago
Read 2 more answers
Choose which one you believe doesn't belong, then explain the reason why you chose your answer above! ( thank you :) )
Oksi-84 [34.3K]

Answer:

2

Step-by-step explanation:

1,3,4 are arithmetic sequences

2 is a geometric sequence

5 0
3 years ago
Read 2 more answers
Mei is making fruit punch.
sp2606 [1]

Answer:

16.2p (If lemonade is .75p, if not substitute in the equation below)

Step-by-step explanation:

In 4 liters, there would be 3 liters of lemonade and 1 liter in juice.

I am assuming 75p is meant to be .75p

So 4 liters costs: (1 x 1.8) + (3 x .75) = 4.05

We need 16 so: 4.05 x 4 = 16.2

6 0
2 years ago
What is the surface area, in square inches, of a disco ball with a circumference of 188.5 centimeters?
Rudik [331]
A = 11300 cm<span>2
</span>
Hope this helps!
3 0
2 years ago
Other questions:
  • Travis traveled 354 miles in 6 hours. What is his unit rate of speed in miles per hour? _____ miles per hour
    8·2 answers
  • -t(-4t^3+8t^2)= <br> PLZZ I NEED HELP ASAP ITS WORK FOR KHAN ACADEMY AND I HAVE 6 ASSIGNMENTS TO DO
    9·1 answer
  • Find the sum of 8(5m)+2(3m);m=-2
    9·1 answer
  • Name the line segments
    14·1 answer
  • Can someone help me, please and thank you? I'll give BRAINLEST to the person who gets it right!!! Please have explained how to g
    13·2 answers
  • What is the volume of a rectangle Kay prism that is 16 meters by 25 meters by 37 meters? PLZ HELP QUICK
    5·1 answer
  • Round 72,130 to the nearest hundredth
    7·2 answers
  • A fish tank has a length of 14cm, a width of 25cm, and a height of 15cm. It is only filled with water up to a height of 7 centim
    15·1 answer
  • Let A = {15, 25, 35, 45, 55, 65} and B = {25, 45, 65}. What is A ∩ B?
    7·1 answer
  • Ill give brainliest to CORRECT ANSWER and 50 points! &lt;3
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!