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
Mandarinka [93]
3 years ago
11

The first three steps for solving the quadratic equation by completing the square are shown. Fill in the missing number in the l

ast step.
9x2 +54x = 7

9(x2 + 6x) = 7

9(x2 + 6x + 9) = 7 +.?
Mathematics
2 answers:
gulaghasi [49]3 years ago
5 0
Completing the square is done as follows:

1. Write the equation in a way that the constants are in the right side while the terms with x are on the left. 
<span>9x2 +54x = 7
</span>
2. Make sure that the coefficient of the x^2 term is 1.
<span>9(x2 + 6x) = 7
</span>
3. Adding a term to both sides that will complete the square in the left side. This is done by dividing the coefficient of the x term by 2 and squaring it. Note: The same amount should be added to the right side to balance the equation.
<span>9(x2 + 6x + 9) = 7 + 81

9(x+3)^2 = 88
</span>
Westkost [7]3 years ago
4 0

Answer:

? = 81

Step-by-step explanation:

You might be interested in
How do i find the scale factor?
AnnyKZ [126]

Answer:

1:3.7

Step-by-step explanation:

1331/27

Then cube root

3.66666666667

Round

3.7

(i believe)

8 0
3 years ago
What is the slope of this line?
sergiy2304 [10]
The slope of that line is “undefined”. The slope of horizontal lines are 0 and the slope of vertical lines are undefined. 
4 0
3 years ago
I Really Don't Get Ratio, Can I Have Some Help?
lutik1710 [3]
Example:
If I give u a ratio of the number of teachers to students is 2:1 would mean that for every 2 teachers there is 1 student.

In question 10(a) the ratio of grey to black is 3:1 which means that the percentage would be 33%

In 10 (B) the ratio would be 6:4
3 0
3 years ago
Which expression is equivalent to 4 (3n - 5)?
Fynjy0 [20]
12n - 20 is the answer
4 0
3 years ago
Suppose that the auto loans from a bank are normally distributed with a mean of $23,334 and a standard deviation of 3,412. what
UkoKoshka [18]
To illustrate the information in the correct syntax:
X~N(23334, 3412²)
What we're being asked to find is P(X ≤ 26000).
In order to do this, we need to convert this value into one we can look up on the table for the standard normal distribution (Z).
To do this we use the formula:
Z = (X - μ)/σ
Z = (26000 - 23334)/3412 = 0.7813599... ⇒ 0.78
We can say:
P(X ≤ 26000) = P(Z ≤ 0.78) = 0.7823
4 0
3 years ago
Other questions:
  • 5, 392, 029, 004 in word form
    10·2 answers
  • Triangle ABC has vertices at A(-1,1), B(-7,1), and C(-3,6).<br> What is the area of Triangle ABC?
    15·1 answer
  • you buy a ring box as a birthday gift that is in the shape of a triangular prism. what is the least amount of wrapping paper nee
    14·1 answer
  • In forming a contract, the “meeting of the minds” is _____.
    6·1 answer
  • The sum of seven and the quotient of a number x and eight
    6·1 answer
  • What is the x-coordinate of the solution for the system of equations?
    9·2 answers
  • Can anyone explain how to find the square root of fractions? For example, √(5/6)^2<br> ​
    13·1 answer
  • The diagram shows a convex polygon<br><br> solve for b
    15·1 answer
  • 16.872 divided by 0.24<br><br><br> HELP I NEED HELP QUICJ
    13·2 answers
  • If mark gets 41 out of 55 questions on a test what equation would he use to determine the percent correct
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!