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
Readme [11.4K]
3 years ago
11

Start with x2 + 4x = 12 and complete the square, what is the equivalent equation? A) (x + 2)2 = 16 B) (x + 2)2 = 14 C) (x + 4)2

= 16 D) (x + 4)2 = 28
Mathematics
1 answer:
alexira [117]3 years ago
8 0

Answer: The answer is A

Step-by-step explanation: Add the coefficient of x to the both sides.

X²+4x=12

X²+4x+4=12+4

X²+4x+4=16

X²+2x+2x+4=16

X(x+2)+2(x+2)=16

(X+2)(x+2)=16

(X+2)²=16

You might be interested in
Anyone? please i need help
arsen [322]
<span><u><em>Answer:</em></u>
y = 5x - 7

<u><em>Explanation:</em></u>
<u>The general form of the linear line in slope-intercept form is:</u>
y = mx + c
where:
m is the slope
c is the y-intercept

<u>1- getting the slope:</u>
The slope of the line can be calculated using the following formula:
m = </span>\frac{y_{2}-y_{1}}{x_{2}-x_{1}}
<span>
We are given the points:
(3,8) representing (x</span>₁<span>,y</span>₁<span>)
(2,3) representing (x</span>₂<span>,y</span>₂<span>)
Substitute with the givens in the above equation to get the slope as follows:
m = </span>\frac{3-8}{2-3}<span> = 5

<u>Therefore, the equation now became:</u>
y = 5x + c

<u>2- getting the y-intercept:</u>
To get the value of the c, we will use any of the given points, substitute in the equation we got in part 1 and solve for c. I will use point (2,3) as follows:
y = 5x + c
3 = 5(2) + c
3 = 10 + c
c = 3 - 10
c = -7

<u>Based on the above, the equation of the line is:</u>
y = 5x - 7

Hope this helps :)</span>
6 0
2 years ago
Read 2 more answers
Write an equation in slope-intercept form of the line that passes through the given point and is parallel to the graph of the gi
solniwko [45]
Written in slope intercept it would be..

y= -2x^2 + 2x + 18
5 0
3 years ago
Shawna purchased a new laptop.  The sale advertised 25% off the regular price.  If the regular purchase price is $575.00, what w
kati45 [8]
575.00= 100% 575 divided by 100= 5.75 times 25= 143.75 So then 575.00 - 143.75 = 431.25 (the discount was 143.75, and her new total would be 431.25)
6 0
2 years ago
Which expression is equivalent to 7 2/3 ⋅ 7 1/4?
dimulka [17.4K]

Answer:

B

Step-by-step explanation:

Recall that 7^a\cdot 7^b = 7^{a+b}

So now

7^{2/3} \cdot 7^{1/3}\\= 7^{\frac{2}{3}+\frac{1}{4}}\\=7^{\frac{8}{12}+\frac{3}{12}}\\=7^{11/12}

8 0
3 years ago
Read 2 more answers
Simplify<br><br> (-3)^1 x (-3)^O
Elis [28]

Answer:

(-3)^1+0

Step-by-step explanation:

7 0
2 years ago
Other questions:
  • Find the circumference of a circle with radius 1.4 in. long. Then use the approximation 3.14 for π and approximate the circumfer
    10·1 answer
  • Need help with math
    9·2 answers
  • 4-0.25g+0.5h=When g=10 andh=5
    11·2 answers
  • What is the volume of a cylinder tgat gas tge sane vase and height as the cone?
    13·1 answer
  • Pls. Help me to solve this math problem.
    9·1 answer
  • During the baseball season, marvins team won 5 games and lost 14 games
    9·1 answer
  • Two triangles with the same corresponding side lengths will be congruent is known as the ?
    11·2 answers
  • Ruben's football team lost 2 yards, which means went backwards, on their last play. Which integer best represents this?
    15·1 answer
  • I’m pretty sure I know the answer but I just wanna check myself, thanks :)
    15·1 answer
  • A social scientist would like to analyze the relationship between educational attainment (in years of higher education) and annu
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!