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
NNADVOKAT [17]
3 years ago
6

Brian correctly use a method of completing the square to solve the equation X a 2nd plus 7X -11 equals zero Brian‘s first step w

as to rewrite the equation as extra 2nd+ 7X equals 11 he then added a number to both sides of the equation which number do you add
Mathematics
1 answer:
ArbitrLikvidat [17]3 years ago
6 0

Answer:

(\frac{7}{2})^{2}

Step-by-step explanation:

Brain correctly use a method of completing the square to solve the equation:

x^2+7x-11=0

His First Step is to: Take the Constant Term to the Right Hand Side

x^2+7x=11

The Next Step Would be to:

  • Divide the Coefficient of x by 2
  • Square It
  • Add it to both Sides

In this case, the Coefficient of x  = 7

  • Divided by 2 = \frac{7}{2}
  • Squaring It, we have: (\frac{7}{2})^{2}

It is this number (\frac{7}{2})^{2} that is added to both sides in the manner below:

x^2+7x+(\frac{7}{2})^{2}=11+(\frac{7}{2})^{2}

You might be interested in
Four times the reciprocal of a number equal 2 times the reciprocal of 8
garik1379 [7]

Answer:

Step-by-step explanation:

Let the number be y & reciprocal simply means inverse of the number

4×1/y=2×1/8 solving for y

4/y=2/8; y = 16

5 0
2 years ago
What is a quadrilateral?
Brut [27]
A four-sided shape/figure
8 0
3 years ago
Read 2 more answers
Write an equation in​ point-slope form of the line that passes through the given​ points, then write the equation in​ slope-inte
GalinKa [24]
Y=2/9x+9

y-y1=m(x-x1) is the formula you use

5 0
3 years ago
The lunch lady had 5 pound of lasagna. If she makes 1/4-pound servings using this amount of lasagna, how many servings can she m
jekas [21]
She could make 20 servings of lasagna.

There are 4 servings per pound of lasagna, and there are 5 pounds total.
4 x 5 = 20
6 0
3 years ago
Find k such that f(x) is continuous at x=30
Maru [420]

Answer:

this is correct

Step-by-step explanation:

f continous in x=30 means that it should be the same value for 1.25 x 30 and 1.10 x 30 + k so k =4.5

5 0
3 years ago
Other questions:
  • A one-year membership to Metro Gym costs $460 including is a fee of $100. How much will a customer pay monthly
    12·1 answer
  • How do i find the area if this problem?
    7·1 answer
  • Is there a dilation that maps shape II onto shape I? If so, what is the scale factor and is it an enlargement or a reduction?
    14·2 answers
  • There are 2 more angles. m angle 7 and m angle 8
    10·1 answer
  • a square and rectangle are shown below the width of the rectangle is the same length at a side of the square both represented by
    11·1 answer
  • Evaluate ab/c if a=5, b=6 and c=3
    14·2 answers
  • Consider the figure below. I need need help with what’s the slope of TR is:
    7·1 answer
  • Admission to the county fair is $15, and each ride ticket costs $1.75. Write an expression to describe the total cost of 8 rides
    13·1 answer
  • Directions: Solve the following by multiplying by the inverse of the fractional coefficient. 1. \frac{2}{5} t = 20 2. \frac{7}{8
    12·1 answer
  • The coordinates of midpoint M and endpoint Q of a segment are M(–7, 8) and Q(–19, 30). Find the coordinates of the other endpoin
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!