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
natka813 [3]
3 years ago
5

Solve the equation by completing the square. round to the nearest hundredth if necessary. x^2-6x=20

Mathematics
2 answers:
amm18123 years ago
6 0
X^2 - 6x = 20
x^2 - 6x + 9 = 20 + 9
(x - 3)^2 = 29
x - 3 = (+-) sqrt 29
x = 3 (+-) sqrt 29
x = 3 (+-) 5.39

x = 3 + 5.39 = 8.39 <=
x = 3 - 5.39 = - 2.39 <=
Goryan [66]3 years ago
4 0
X^2-6x+(b/2)^2=20+(b/2)^2
x^2-6x+(6/2)^2=20+(6/2)^2
x^2-6x+(3)^2=20+(3)^2
x^2-6x+9=20+9
(x-3)^2=29
x-3=5.38 or -5.38
x=5.38+3 or -5.38+3
x=8.38 or -2.38




























You might be interested in
I'm not sure how to start the process....
lesantik [10]
Step 1; both side divide by 4, you'll get Ix-10I=8
step 2: x-10=8 or x-10=-8
x=18 or x=2
3 0
3 years ago
Part of a regression output is provided below. Some of the information has been omitted.
quester [9]

Answer:

301.189

Step-by-step explanation:

Given the table :

Source of Variation - - SS - - - df - - - MS - - - - F

Regression - - - - - -3177.17 - - -2 - - 1588.6

Residual - - - - - - - - ______ --17 - - -17.717

Total - - - - - - - - - - 3478.36 - - 19

Calculate the SSR, Sum of Square residual

The Sum of Square RESIDUAL (SSR), Mean Square Residual (MSR) and Degree of Freedom RESIDUAL (DFR) are related by the formular :

MSR = SSR / DFR

Hence,

SSR = MSR × DFR

Fr the table ;

MSR = 17.717 ; DFR = 17

SSR = (17.717 × 17)

SSR = 301.189

5 0
3 years ago
Somebody help me with this?
trasher [3.6K]

Answer:

Zero's

Step-by-step explanation:

4 0
3 years ago
2(x+z) - y x=6 y=8 z=3 need help ASAP PLS
Minchanka [31]

Answer:

10

Step-by-step explanation:

substitute the given values into the expression

2(x + z) - y

= 2(6 + 3) - 8

= 2(9) - 8

= 18 - 8

= 10

7 0
2 years ago
I need the equation for this ASAP!
Sindrei [870]

Answer:

5.714 liters of the 5% solution and 4.286 of the 40%.

Step-by-step explanation:

Let x be the volume of 40% solution and y = volume of the 5% solution.

x + y = 10

0.40x + 0.05y = 0.20(x + y)

From the first equation x = 10 -y so we have:

0.40(10 - y) + 0.05y = 0.20( 10 - y + y)

4 - 0.40y + 0.05y = 2

-0.35y = -2

y = 5.714 liters of the 5%.

and x =  10 - 5.714 = 4.286  liters of the 40% solution.

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Other questions:
  • True or False? In an isosceles trapezoid the diagonals are congruent.
    13·1 answer
  • Write a decimal equation that has a product of 3.15 do not use one as a factor
    11·1 answer
  • A building casts a shadow 48ft long. At the same time, a 40ft tall flagpole casts a shadow 9.6ft long
    9·1 answer
  • Explain this please
    7·1 answer
  • What is the length of side s of the square shown below?
    5·2 answers
  • Solve this equation will mark brainlyest
    6·2 answers
  • The best fitting straight line for a data set of X-values plotted against y-values is
    14·1 answer
  • solve the problem by working backward. a number is divided by 4 and the quotient is added to 3 , the result is 24 what is the nu
    10·1 answer
  • What is the answer??
    7·1 answer
  • The correlation between two scores X and Y equals 0.75. If both scores were converted to Z-scores, then the correlation between
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!