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
il63 [147K]
3 years ago
5

Find the value of c that completes the square. k^2-18k+c

Mathematics
2 answers:
eimsori [14]3 years ago
4 0

Answer:

c = 81

(k-9)(k-9)

k²-18k +81

sdas [7]3 years ago
4 0

Answer:

Discriminant(D) = 0

Therefore b² = 4ac

when b = -18, a = 1, c = c

puting the values in the equation...

(-18)² = 4(1) x C

324 = 4C

divide though by 4

we have : C = 324/4

C = 81

You might be interested in
Carl earns $3.25 per hour walking his neighbor's dogs. He walks them 1/3 of an house in the morning and 1/2 of an hour is the af
Lera25 [3.4K]

Answer:

5/6

Step-by-step explanation:

You just need to ad 1/3 and 1/2 which would equal 5/6

8 0
3 years ago
Please help me this is due in less than 45 minutes!
Natasha_Volkova [10]

Answer:

1.) It's 20th century painting

2.) 0.5 probability

Step-by-step explanation:

If the universal = 60

We need to first get the value of X. That is,

x (x - 2) + x + 2x + 8 + 10 = 60

First open the bracket

x^2 - 2x + x + 2x + 8 + 10 = 60

x^2 + x + 18 = 60

x^2 + x - 42 = 0

Factorise the above equation

x^2 + 7x - 6x - 42 = 0

x (x + 7) -6(x + 7) = 0

x = 6 or - 7

Since x can't be negative, so we will ignore -7

The value for T = 6(6 - 2) = 6×4 = 24

The value for B = 2(6) + 8 = 12 + 8 = 20

If a painting is chosen from random,

If it's from 20th century, the probability will be 34/60 = 0.567

If it's from British painting, the probability will be 30/60 = 0.5

We can therefore conclude that it's from 20th century painting since it has higher value of probability.

The the probability of choosing a British painting will be 30/60 = 0.5

5 0
3 years ago
Which of the following points is in the solution set of y < x^2-2x-8
enot [183]

Answer:

y < (x - 4)(x + 2)

so the critical points are -2 and 4

(-2,-1) will be in the solution

( 0,-2) will not  

(4,0) will not.

the answer is ((-2,-1)



3 0
3 years ago
Read 2 more answers
Krystal puts three pencils in order from longest to shortest. What is a fast way to order the same pencil from shortest to longe
mart [117]
By flipping the order

7 0
3 years ago
Mrs.jacobson wants to order toy instruments to give as prizes to her class. the table shows the prices for various order sizes.
anzhelika [568]
First let as solve all unit pirce
whistles 21.25 / 25 = $ 0.85 per unit
36 / 50 = $ 0.72 per unit
60 / 80 = $ 0.75 per unit
kazoos
10 / 25 = $ 0.4 per unit
18.50 / 50 = $ 0.37 per unit
27.20 / 80 = $ 0.34 per unit
a.) $ 0.85 - $ 0.72 = $ 0.13
b.) 10 / 25 = $ 0.4 per unit
c.) he must order 80 kazoos she should order
5 0
3 years ago
Other questions:
  • Can someone help with this math question
    14·1 answer
  • Find the inverse of the function x2 + y2 = 4 and the domain of the inverse for 0 ≤ x ≤ 2.
    14·1 answer
  • Help me plz give the right awenser
    10·1 answer
  • If x=y and y=10, then x=10 exemplifies which property?
    11·1 answer
  • What is the answer to 2/3 +4/6
    6·2 answers
  • Find the mean of the data in the bar chart below.
    5·2 answers
  • Question 4 of 10
    11·2 answers
  • How do I find the Q1 and Q3?<br><br> 0,0,1,2,2,3,4,4,4,4,5,6,6,7,7
    5·1 answer
  • 6=2(y+2) what is the value of y in the equation
    13·2 answers
  • A line contains points F, G, H, I, J. The space between F G is 2. The space between H and I is 1. The space between F and I is 7
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!