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
Yuri [45]
3 years ago
5

What is the vertex form of 2x^2+10x-5

Mathematics
1 answer:
Nataly_w [17]3 years ago
7 0
<span><span>Two Solutions
1. x =(10-√140)/4=(5-√<span> 35 </span>)/2= -0.458</span><span> 

2. x =(10+√140)/4=(5+√<span> 35 </span>)/2= 5.458</span></span>
You might be interested in
Please help me thank you so much i will give brainliest to the right answer
AnnyKZ [126]
Is is the first one. 1600=.45x
3 0
3 years ago
Read 2 more answers
Solve each given equation and show your work. Tell whether it has one solution, an infinite number of solutions, or no solutions
Bingel [31]

These are three equations and three answers.


Answers:

  • A) infinite solutions, identity
  • B) one solution, x = 27, neither contradiction nor identiy
  • C) x = no solutions, contradiction

Explanation:


Equation A: 20 - 4x = 12 - x + 8 - 3x

The objective is clearing the unknown, which is to isolate it in one side of the equation.

These are the steps and properties that you need to use:


1.  Combine like terms on right side:

20 - 4x  = 20 - 4x


2. Use addition property of equality (add 4x on each side).

20 = 20 ↔ identity


Conclusion: you have gotten a condition that is always true, no matter the value of x, which means that the equation has infinite solutions and it is an identity.


Equation B: 5x + 4x - 3  =  24 + 8x (note that I placed the equal sign as it was missing)


1.  Combine like terms on each side:

9x - 3 = 24 + 8x


2. Subtraction property and addition propertiy of equality (subtract 8x and add + 3 on both sides)

x = 27 ↔ solution (neither contradiction nor identity)


Conclusion: the solution is x = 27.


Equation C: 5x + 6 = 2x + 6 + 3x - 15 (note that I placed the equal signs as it was missing)


1. Comitne like terms on the right side:

5x + 6 = 5x - 9


2. Subtraction property of equality (subtract 5x from each side)


6 = - 9 ↔ contradiction


Conclusion: the equation does not have a solution since the final equality is always false (a condradiction or absurd).


For your information, when the variable (x) dissapears and fhe final equality is always true (for example 0 = 0, or 20 = 20), the equation is an identity.

6 0
3 years ago
Read 2 more answers
What is the solution -10 = 2a - 4
Simora [160]

Add 4 to both sides

-10 + 4 = 2a

Simplify -10 + 4 to -6

-6 = 2a

Divide both sides by 2

-6/2 = a

Simplify 6/2 to 3

-3 = a

Switch sides

<u>a = -3</u>

6 0
3 years ago
Read 2 more answers
Only do 16 pls help me i will give u brainliest if you help
USPshnik [31]

Answer:

16)  18.5 hours

Step-by-step explanation:

40gifts = 5hrs

40/5 = 8

8gifts = 1hr

148/8 = 18.5

In 18.5 hours, 148 gifts are wrapped.

hope this helps and is right. p.s. i really need brainliest :)

8 0
2 years ago
I don’t understand can someone help me
Dovator [93]
72 sq in times 9 is 648 sq in
8 0
3 years ago
Other questions:
  • At a track meet, Jacob and Daniel compete in the 220m hurdles. Daniel finishes in 3/4 of a minute. Jacob finishes with 5/12 of a
    9·2 answers
  • A woman bought 50 meters of cloth at 60 cedis . she sold the cloth at 1.50 cedis per meter. Find her percentage profit.​
    15·1 answer
  • Tina Zappa purchased a three-pack of facial tissues for $2.98. What is the unit price per pack rounded to the nearest tenth of a
    8·2 answers
  • Which ratio does not belong with the other three, explain your reasoning. 4/10, 2/5, 3/5, 6/15
    7·1 answer
  • In the Granger cases of the 1870s involving railroad regulation, Supreme Court decisions were significant because the decisions
    15·1 answer
  • winnie wrote the following riddle i am a number between 60 and 100 my ones digit is two less than my tens digits im a prime numb
    15·2 answers
  • Help help help help
    9·2 answers
  • Which fraction represents the product of -7/8 and -9/11 in simplest form?
    12·1 answer
  • Estimate the total weight of two million pounds worth of two pence coins in kilograms. A two pence coin weighs 7.1g.
    11·1 answer
  • What is the equation of the line graphed below
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!