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
kolbaska11 [484]
2 years ago
15

Solve quadratic equation by square roots method 2x^2-18=0

Mathematics
1 answer:
Brilliant_brown [7]2 years ago
6 0

Answer:

x = 3 and x = -3 (aka. x = ±3)

Step-by-step explanation:

2x² - 18 = 0

x² - 9 = 0

x² = 9

x = ±3

Therefore, x = 3 and x = -3

You might be interested in
Help help help help me pleaseeeeeeeee
kobusy [5.1K]

The ticket price which will maximize the student's council is: C. $3.10.

<h3>What is price?</h3>

Price can be defined as an amount of money which is primarily set by the seller of a product, and it must be paid by a buyer to the seller, so as to enable the acquisition of this product.

Based on the information provided about Valley High School student council, we can logically deduce the following data:

  • Total number of students = 420 students.
  • Lowest ticket price = $2.00.
  • Increase in ticket price = $0.20.
  • Attendance = 20 fewer students

<h3>How to determine the ticket price?</h3>

Mathematically, the equation which model the profit is given by:

Profit = price × number of tickets sold

P(x) = (2 + 0.2x)(420 - 20x)

P(x) = 840 + 84x - 40x - 4x²

P(x) = -4x² + 44x + 840.

For any quadratic equation with a parabolic curve, the axis of symmetry is given by:

Xmax = -b/2a

Xmax = -44/2(-4)

Xmax = -44/-8.

Xmax = 5.5

Ticket price for maximum profit is given by:

Ticket price = 2 + 0.2x

Ticket price = 2 + 0.2(5.5)

Ticket price = $3.10.

Read more on maximized profit here: brainly.com/question/13800671

#SPJ1

8 0
2 years ago
The number 6 is a member of which four groups of real numbers?
mihalych1998 [28]
B. Integers
C. Whole Numbers
D. Rational Numbers
E. Natural Numbers
4 0
3 years ago
Which expression is equivalent to 4.4.4.4.4.4.4.4?
seraphim [82]

Answer:

your answer is D

Step-by-step explanation:

hope this helps

8 0
3 years ago
Read 2 more answers
The mass of Jupiter is 1.898 × 10(27) kilograms, and the mass of Saturn is 5.68 × 10(26) kilograms. How much greater is Jupiter'
grandymaker [24]
Just subtract but take care of the power or else you can come up with wrong results !

so first make the power same ;

for Jupiter = 1.898× 10(27) = 18.98 × 10(26)
for Saturn = 5.68×10(26)

so now subtract = (18.98-5.68) × 10(26)
= 13.3 × 10(26)

so the answer is 13.3 ×10(26)
or, 1.33× 10(27)
6 0
3 years ago
Assume that $4,000 I deposited into an investment account doubled in value over a six year period. What annual interest rate mus
Novay_Z [31]

Answer:

Interest rate is about 12.246%

The initial deposit doesn't matter because when you divide both sides by the initial deposit you're always left with (1+i)ⁿ=2

Step-by-step explanation:

4000(1+i)^6=8000\\(1+i)^6=2\\1+i=\sqrt[6]{2} \\1+i=1.122462048\\i=.12246

6 0
3 years ago
Other questions:
  • 3x+4x+5=19 what is the solution for x
    15·1 answer
  • Choose the pair of events that is mutually exclusive. (a). Even integers and multiples of 3 (b). Odd integers and multiples of 4
    6·2 answers
  • Compare -1/6 to -2/3 &lt;,&gt;,=
    8·1 answer
  • Can someone please answer this question please answer it quickly I need it please answer it correctly and please please show wor
    7·2 answers
  • If the height and base of the parallelogram shown are each decreased by 2 cm, what is the area of the new parallelogram?
    7·1 answer
  • Marjorie needs to earn a C in her Geology class. Her current test scores are 71,77, and 72. Her final exam is worth 6 test score
    9·1 answer
  • Enter in the missing numbers to create equivalent ratios. HELPPPPPPPPPPPPPPPPPPPP
    10·1 answer
  • How many 30g flower pots can a 9kg pack of soil fill up
    13·1 answer
  • How much wrapping paper is needed to cover a box (rectangular prism) that measures 6 feet by 2.5 feet by 3 feet?
    11·1 answer
  • [[|help please|]] will give brainliest
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!