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
Kitty [74]
2 years ago
5

Complete The Square: (Z^2)-19z=66

Mathematics
1 answer:
Musya8 [376]2 years ago
8 0
To solve the equation using complete square method we proceed:
z^2-19z=66
but
 c=(-b/2a)^2
c=(-19/2)^2
c=361/4
thus:
z^2-19z+361/4=66+361/4
factoring the LHS we get:
1/4(2z-19)^2=625/4

(2z-19)^2=625
getting the square root of both sides we get:
2z-19=+/-25
2z=+/-25+19
2z=44 or -6
z=22 or -3
Answer: z=22 or z=-3



You might be interested in
Ed buys a vase for £24 and adds 25% onto the price before putting it into his shop window.
hoa [83]
The price-tag say 30 £
6 0
3 years ago
Algebra, im so confused
kramer

By analyzing and understanding the graph of the absolute value function, we find that the function evaluated at the x-value equal to 1 is equal to the y-value equal to 3.

<h3>What is the y-value associated to a given x-value of an absolute value function? </h3>

In this problem we find the representation of an absolute value function, where the horizontal axis corresponds to the values of the domain, whereas the vertical axis is for the values of the range. In that picture we must look up for the y-value associated with a given x-value.  

Then, we proceed to evaluate the absolute value function at x = 1. In accordance with the graph, the y-value , that is, from the vertical axis, associated with the x-value, that is, from the horizontal axis, equal to 1 is equal to a value of 3.

To learn more on absolute values: brainly.com/question/1301718

#SPJ1

8 0
11 months ago
Giving brainlyist and 5 stars
sweet-ann [11.9K]

Answer:

B: Each sandwich has one third pound of ham.

7 0
3 years ago
Read 2 more answers
Find the length of the missing side.
brilliants [131]

Answer:

x = 10

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

Equality Properties

  • Multiplication Property of Equality
  • Division Property of Equality
  • Addition Property of Equality
  • Subtract Property of Equality

<u>Geometry</u>

[Right Triangles Only] Pythagorean Theorem: a² + b² = c²

  • a is a leg
  • b is another leg
  • c is the hypotenuse

Step-by-step explanation:

<u>Step 1: Identify</u>

Leg <em>a</em> = 8

Leg <em>b</em> = 6

Hypotenuse <em>c</em> = <em>x</em>

<em />

<u>Step 2: Solve for </u><em><u>x</u></em>

  1. Substitute [PT]:                    8² + 6² = x²
  2. Exponents:                          64 + 36 = x²
  3. Add:                                     100 = x²
  4. Isolate <em>x</em>:                              10 = x
  5. Rewrite:                                x = 10
5 0
2 years ago
Is 1/8&lt;-1/2 a solution or no?
miv72 [106K]
It is not because always remember, a positive is greater than a negative. This equation is showing a negative being greater than a positive. That's like saying I'm taller than you.
5 0
3 years ago
Other questions:
  • You invest $500.00 in a savings account that gives 4.9% annual interest, compounded quarterly. How much money will you have at t
    14·1 answer
  • Why is 3 + (−5) equal to −2?
    10·1 answer
  • Draw base ten blocks to model division with regrouping for each division expression below
    11·1 answer
  • 1/10 of 400,00 is 10 times as much
    6·1 answer
  • Find three consecutive odd numbers whose sum is 1875.
    10·1 answer
  • What is 0.0825 as a fraction
    14·2 answers
  • White a proportian . SHow the solution 8/3= 2/n
    13·2 answers
  • Evaluate the expression for the given value of x.<br> 6x + 7 for x = 2<br> The solution is
    15·1 answer
  • Here is a table of values for y = f(x).
    6·1 answer
  • Explain how the unit rate and slope of a proportional relationship are related to each other
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!