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
wolverine [178]
3 years ago
8

TheSolution to the equation is ??

Mathematics
1 answer:
spayn [35]3 years ago
5 0

Answer:

X = 1

Step-by-step explanation:

2x^2 + x - 1 = 2

2x^2 + x - 3 = 0

2x^2 + 3x -2x - 3 = 0

x(2x+3) -1 ( 2x+3) = 0

(x-1) (2x+3) = 0

x-1=0

x=1

2x+3=0

2x=-3

x=-3/2.

You might be interested in
1. Determine whether or not each of the following is a Binomial random variable. If it is not a Binomial random variable, provid
satela [25.4K]

Answer:

a) You roll a die 25 times. Let X be the number of times that you roll "3".

* Is a Binomial

b) The SJSU football team will play 12 games next season. They have a 70% chance of winning each conference game and a 60% chance of winning each nonconference game. Let X be the number of games the SJSU football team wins next season.

* Not a Binomial because probability of success is not constant

c) Evelyn has a 75% chance of getting an A in each class she takes. Let X be the number of times Evelyn earns an A during four years at SJSU.

* Is a Binomial

8 0
3 years ago
Consider the functions f and g defined by \[f(x) = \sqrt{\dfrac{x+1}{x-1}}\qquad\qquad\text{and}\qquad\qquad g(x) = \dfrac{\sqrt
tino4ka555 [31]

Answer:

The given functions are not same because the domain of both functions are different.

Step-by-step explanation:

The given functions are

f(x)= \sqrt{\dfrac{x+1}{x-1}}

g(x) = \dfrac{\sqrt{x+1}}{\sqrt{x-1}}

First find the domain of both functions. Radicand can not be negative.

Domain of f(x):

\dfrac{x+1}{x-1}>0

This is possible if both numerator or denominator are either positive or negative.

Case 1: Both numerator or denominator are positive.

x+1\geq 0\Rightarrow x\geq -1

x-1\geq 0\Rightarrow x\geq 1

So, the function is defined for x≥1.

Case 2: Both numerator or denominator are negative.

x+1\leq 0\Rightarrow x\leq -1

x-1\leq 0\Rightarrow x\leq 1

So, the function is defined for x≤-1.

From case 1 and 2 the domain of the function f(x) is (-∞,-1]∪[1,∞).

Domain of g(x):

x+1\geq 0\Rightarrow x\geq -1

x-1\geq 0\Rightarrow x\geq 1

So, the function is defined for x≥1.

So, domain of g(x) is [1,∞).

Therefore, the given functions are not same because the domain of both functions are different.

4 0
3 years ago
A B C OR D PLEASE HELP !!!!!!!!!!!!!!!!!!!!!!!!!!! I REALLY APPRECIATE
ddd [48]

Answer: B


Step-by-step explanation: Okay so you add 6m and 1m to get 7m for that entire side. Then you have 3m on each side that is slanted. You finally add 5m.

7m + 3m + 3m + 5m = 18m^2


4 0
3 years ago
A stack of 60 identical books at the book store was 135 inches tall.
koban [17]
<span>6.75 inches....................
</span>
3 0
3 years ago
Read 2 more answers
Pip and Sara win some money and share it in the ratio 7:3. Pip gets £36 more than Sara. How much did they get altogether?
Vanyuwa [196]

Answer:

I think its 90 but im not sure.

Step-by-step explanation:

8 0
3 years ago
Other questions:
  • Part A: Write an equation of a line that is perpendicular to the line y = 2/3x + 5 and passes through the point (4, 0).
    13·2 answers
  • A quantity with an initial value of 9100 grows continuously at a rate of 0.85% per hour. What is the value of the quantity after
    6·1 answer
  • Ali paid $85 for an antique clock several years ago. She recently found that it had increased in value 165%. What is the present
    12·1 answer
  • Solve the inequality 8(x - 2) + 9 &lt; 3(x - 1) + 5x​
    13·1 answer
  • Simplify 6r · s · 4rt.
    12·2 answers
  • Sally borrows some money at a 15% interest rate. She repays the loan in full after 30 months and pays $1692 in interest. How muc
    7·1 answer
  • What's the answer..............
    6·1 answer
  • the cost of 6 sandwiches and 4 drinks is $53. the cost of 4 sandwiches and 6 drinks is #47. how much does one sandwich cost?
    14·1 answer
  • PLEASE HELP ME OUT!! A local bakery sold 60 loaves of bread in one day. If 65% of these were sold in the afternoon, how many loa
    7·1 answer
  • HELP ASAP PLEASE!!!!!!
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!