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
fomenos
3 years ago
7

Solve the quadratic equation by completing the square. x2 + 4x - 3 = 0

Mathematics
1 answer:
Dafna1 [17]3 years ago
5 0
x^2 + 4x - 3 = 0
This answer should be x = -2 -  \sqrt{7}, based off of Wolfram Alpha.
You might be interested in
82 decrease by 10 percent
zzz [600]

Answer:

Percentage decrease = 10% × 0.82 

New value = 0.82 - Percentage decrease

Let me know if this helps! :)

8 0
2 years ago
Please help me with this I will give u 100 points
ValentinkaMS [17]

Answer:

see below

Step-by-step explanation:

Video Game

20% off means you pay 80%

80 dollars * 80% =

80 * .80 = 64

Movie ticket

14 original price

Sale price = 11.40

14* p% = 11.40

Divide each side by 14

p% = 11.40/14

p% =81.4285714

You paid 81 3/7%

The discount is 100 -81 3/7%

18 4/7 % discount

Laptop

1000 original price

Sale price = 750

1000 * p% = 750

p% = 750/1000

p% =75%

You paid 75%

The discount is 100 -75%

25 % discount

5 0
3 years ago
Read 2 more answers
what is the original price and the markup to find the retail price. Original price: $44; Markup: 7.5%
torisob [31]

Answer:

the retail price is $47.30

Step-by-step explanation:

3 0
3 years ago
A ferry is travelling at a constant speed back to the dock, as shown in the graph. Which
mario62 [17]

Answer:

c. y = -35*x + 105

Step-by-step explanation:

Lo que demos hacer es calcular los puntos cuando x = 0 y cuando x = 3, es decir el inicio y el fin del recorrido.

Cuando x es igual 0, y = 105, por lo tanto, la función sería:

y = A*x + 105

Cuando x = 3, y = 0, por lo tanto:

0 =  3*A +  105

resolvemos para A:

3*A =  -105

A = -105/3

A =  -35

Por lo tanto la función es:

y = -35*x + 105

es decir, la opción c.

7 0
3 years ago
When x-y=3 work out the value of y-x
GalinKa [24]

The value of y-x is (-3)

<u>Solution:</u>

Given: The value of x-y=3

To find: The value of y-x

\bold{x-y=3\rightarrow (1)}

Let's multiply the equation (1) by (- 1) on both sides,

\Rightarrow\bold{(x - y)\times(- 1) = 3\times(- 1)}

\Rightarrow\bold{-(x-y)=-3}

On multiplying the sign,

\Rightarrow\bold{(-x+y)=-3}

The above equation can also be written as,

\Rightarrow\bold{y-x=-3\rightarrow \text{(The required equation)}}

<u>Multiplication of signs:</u>

\Rightarrow( + )\times( + ) = ( + )

\Rightarrow( + )\times( - ) = ( - )

\Rightarrow( - )\times( + ) = ( - )

\Rightarrow( - )\times( - ) = ( + )

In simpler terms, when we multiply two integers with the same signs, the result is always positive and when we multiply two integers with different signs, the result is always negative.

5 0
3 years ago
Other questions:
  • What is the measure of each interior angle in a regular 15-gon?
    7·2 answers
  • Simplify the expressions below<br><br> a. (y^3)^2y^4 b. (z^-3)^-2z^3
    12·1 answer
  • Please helppppppppppppppppppppppppppppppppppppppppppp
    11·2 answers
  • at the dog show there are four times as many boxers as spaniels if there are a total of 30 dogs how many dogs are spaniel
    13·2 answers
  • Solve the following simultaneous linear congruences.
    5·1 answer
  • What metric unit is best used for the length of a car?
    8·1 answer
  • Caslan where have you been
    9·1 answer
  • I’ll give u brainliest!! what is the area of shape 1 2 and 3
    8·2 answers
  • :D PLZ HELP WITH MI MATH
    12·2 answers
  • HELP! Ill vote brainliest and 60 pts is on the line!
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!