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
Korvikt [17]
3 years ago
10

What are the solutions to 2x^2-4x-30=0

Mathematics
1 answer:
oksano4ka [1.4K]3 years ago
5 0

Answer:

ill try  2x2-4x-30=0  

Two solutions were found :

x = 5

x = -3

Step by step solution :

Step  1  :

Equation at the end of step  1  :

 (2x2 -  4x) -  30  = 0

You might be interested in
A machine costs 7500. Its value decreases by 5% every year due to usage. what will be its price after 1 year?​
Arada [10]

Answer:

12000 will be the price of machine after 1year.

Step-by-step explanation:

As i got.

5 0
2 years ago
Find the value of A if the 4-digit number 3A5A is divisible by both 3 and 5.
Arturiano [62]

Answer:

The value of A is 5

Step-by-step explanation:

- The number is divisible by 3 if the sum of its digits is a number

  divisible by 3

- Ex: 126 is divisible by 3 because the sum of its digits = 1 + 2 + 3 = 6

  and 6 is divisible by 3

- The number is divisible by 5 if its ones digit is zero or 5

- Ex: 675 is divisible by 5 because its ones digit is 5

        890 is divisible by 5 because its ones digit is 0

- We are looking for the value of A in the 4-digit number 3A5A which

  makes the number divisible by both 3 and 5

∵ A is in the ones position

∴ A must be zero or 5

- Let us try A = 0

∵ A = 0

∴ The number is 3050

∵ The sum of the digits of the number = 3 + 0 + 5 + 0 = 8

∵ 8 is not divisible by 3

∴ 3050 is not divisible by both 3 and 5

∴ A can not be zero

- Let us try A = 5

∵ A = 5

∴ The number is 3555

∵ The sum of the digits of the number = 3 + 5 + 5 + 5 = 18

∵ 18 is divisible by 3

∴ 3555 is divisible by both 3 and 5

∴ A must be equal 5

* <em>The value of A is 5</em>

5 0
3 years ago
Identify the factor terms by grouping: 5x3 – 4x2 + 20x – 16
jek_recluse [69]

Answer:

The answer is D

Step-by-step explanation:

All you have to do is distribute.

x^2(5x-4)+4(5x-4) =

5x^3-4x^2+20x-16

7 0
3 years ago
While shopping , lucinda
Novay_Z [31]
She originally had $320 in her savings. 48 times 100= 4,800. 4,800 divided by 15=320.
8 0
3 years ago
Someone plz help me :(
Ostrovityanka [42]

Answer:

i can JUST GET ON YOUR CROME BOOK

Step-by-step explanation:

3 0
2 years ago
Other questions:
  • Solve and check: 5/3z = 15
    7·1 answer
  • To make the cone, melted chocolate is pumped onto a huge cold plate at a rate of 2 ft3/sec. Due to the low temperature, the choc
    11·1 answer
  • 20 +63 without rewriting find the sum using mental math
    11·2 answers
  • Solve for x. <br><br> -3x = -15
    8·2 answers
  • Which of the following shows 3 + (x + 6y) rewritten using the Associative Property of Addition?
    8·1 answer
  • Assume a recent sociological report states that university students drink 5.10 alcoholic drinks per week on average, with a stan
    10·1 answer
  • Look at the diagram. If ST = 15 and RT = 40, then RS =_____.<br><br> R———————S——————T
    11·1 answer
  • What is the greatest common factor 12,28, and 4
    13·2 answers
  • <img src="https://tex.z-dn.net/?f=Evaluating%20Combination%20Notation%20%26%20Problem%20Solving" id="TexFormula1" title="Evaluat
    12·1 answer
  • Here is Diya's work writing the expression 6 - 2x + 5 + 4x with fewer terms. Describe the mistake that Diya made.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!