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
horsena [70]
3 years ago
15

Solve the quadratic equation by using either numeric or graphic approach x^2 + 2x - 3 = 0

Mathematics
2 answers:
fomenos3 years ago
8 0

Answer:

d

Step-by-step explanation:

x 1=  \frac{ - b +  \sqrt{ {b}^{2}  - 4ac} }{2a}  \\ x2 =  \frac{ - b  -   \sqrt{ {b}^{2} -  4ac} }{2a}  \\ x1 =  \frac{ - 2 +  \sqrt{ {2}^{2}  - 4\times 1 \times ( - 3)} }{2}  = 1 \\ x2 =   \frac{ - 2 -  \sqrt{ {2}^{2}  - 4 \times 1 \times ( - 3)} }{2}  =  - 3

ser-zykov [4K]3 years ago
7 0

Answer:

d

Step-by-step explanation:

Solving by factorising

Given

x² + 2x - 3 = 0 ← in standard form

(x + 3)(x - 1) = 0 ← in factored form

Equate each factor to zero and solve for x

x + 3 = 0 ⇒ x = - 3

x - 1 = 0 ⇒ x = 1

You might be interested in
Edge proof would be amazing and I will give brainliest for it!
inna [77]

Answer: The answer is B.

Step-by-step explanation: The scale on the y-axis could be changed to 100–120.

7 0
11 months ago
Alina and Asim share Rs 210 in the ratio 2:5. How much money did each of them get?
slavikrds [6]

Answer:

Step-by-step explanation:

Alina=2x---eq(1)

Asim=5x----eq---(2)

So,we get

2x+5x=210

7x=210

x=30

Now,Putting '30' in eq 1 and eq 2

2*30=60

5*30=150

Therefore Alina got 60 Rs while Asim got 150 Rs

5 0
3 years ago
Cual es la energía cinética de un cuerpo de 20kg que viaja a una velocidad de 1 m/s ?
Hitman42 [59]

Answer:

hola como estas amigo de unde stii ca

8 0
2 years ago
Write the equation of a line that passes through the points (-2, 3) and (-4, 4) in slope intercept form (y=mx+b).
Yuri [45]

Step-by-step explanation:

first step is to find the gradient of the line which "m" on the equation

gradient formula is y2 - y1 ÷ x2 - x1 = -½ as shown on the picture we substituted those points given

2nd step is to substitute on the equation y=mx+c

m= -½

y= 3 (you can choose any from those given points but in my case I chose point A)

x= -2

c= ? only unknown variable so we can can calculate it

substitute as shown on the picture to get c= 2

therefore our equation of the line will be y= -½x+2

4 0
3 years ago
To evaluate customer satisfaction, a grocery store gives double coupons to anyone who completes a survey as they enter the store
Genrish500 [490]

Answer:

what is the question then

Step-by-step explanation:

8 0
3 years ago
Other questions:
  • Which linear function represents the table
    6·2 answers
  • Haley pays a monthly fee of $20 for her cell phone and then pays 5 cents per minute used. The cost of Haley’s cell phone bill ca
    10·2 answers
  • Yoshi reported the total area of the five great lakes on the chart above.
    14·1 answer
  • Simplest form for 10 sec 1 min
    9·1 answer
  • Which is not a benefit for direct deposit?
    11·2 answers
  • Suppose the linear regression line y = 2.009x - 37.131 predicts a pizza
    14·1 answer
  • Need answers quick pls!!!!!!
    14·1 answer
  • According to a survey of​ workers,2/20 of them walk to​ work, ​1/20 bike, ​4/20 carpool,13/20 and alone. What percent of workers
    13·1 answer
  • A ceramic vase that cost an antique store $5 was marked $20. What is the percentage markup on the price of the ceramic vase?
    8·1 answer
  • Can i get some help, please
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!