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
cestrela7 [59]
3 years ago
11

Solve the Quadratic Equation.

Mathematics
1 answer:
vichka [17]3 years ago
7 0

Answer:

x = ± 2i

Step-by-step explanation:

The equation has no real roots, gut has complex roots

Given

x² = - 4 ( take the square root of both sides )

x = ± \sqrt{-4}

  = ± \sqrt{4(-1)}

[ Note that \sqrt{-1} = i ]

  = ± \sqrt{4} × \sqrt{-1} = ± 2i

You might be interested in
Here this is the new one.
Helga [31]

Formula #1: 0.15x + 22

Formula #2: 0.19x

0.15x + 22 = 0.19x

15x+2200=19x\\15x=19x-2200\\-4x=-2200\\\frac{-4x}{-4}=\frac{-2200}{-4}\\X = 550

So x = 550.

I hope this helps! :)

5 0
3 years ago
Please Help!! With 4,5,6,9,and3.
timama [110]

Answer:

4) 95*.6=57

5) 60-18=42    42/60=70%

6) 26800-5500=21300     21300*.15=3195$

9)9200*.07=644     644+800=1444

3) 36*.75=27ft


6 0
3 years ago
Can anybody help me please
klio [65]

Answer:

x    y

0   -1

-1    0

-8    7

Step-by-step explanation:

y = -x - 1

when x = 0, y = -1

when y = 0

0 = -x - 1

x = -1

when x = -8,

y = -(-8) - 1

y = 7

8 0
3 years ago
Read 2 more answers
Grandma is trying out a new recipe for raisin bread. Each batch of bread dough makes three loaves, and each loaf contains 15 sli
Tom [10]

Answer:

0.108

Step-by-step explanation:

Using the poisson probability process :

Where :

P(x =x) = (e^-λ * λ^x) ÷ x!

Given that :

Each batch of bread = 3 loaves

Each loaf = 15 slices

Total slice per batch = 15 * 3 = 45 slices

Number of raising added = 100

Average number of raisin per slice, λ = 100/45 = 20/9

Hence,

Probability that a randomly chosen slice has no raising :

P(x = 0) = (e^-λ * λ^x) ÷ x!

P(x = 0) = (e^-(100/45) * (100/45)^0) ÷ 0!

P(x = 0) = (0.1083680 * 1) / 1

P(x = 0) = 0.108

8 0
3 years ago
# 14 Q. Write a congruence
MrRissso [65]
The first is the correct
Δ ZYB ≈ Δ OWR by SSS
because:
                ZB = OR = 5
                ZY = OW = 3
                YB = WR = 5.5
4 0
3 years ago
Read 2 more answers
Other questions:
  • Please help me solve this
    12·1 answer
  • Simplify the expression 3(x + 2)(x2 − x − 8).
    12·1 answer
  • Two numbers have an average of 17. if one the numbers is 11, what is the other number?
    10·1 answer
  • (10x2 + 99x – 5) ÷ (x + 10) =
    10·1 answer
  • Round off 42,680 to the nearest 1,000
    12·1 answer
  • 2ft 3in= _in what is the answer
    11·2 answers
  • How do you do this problem?
    14·1 answer
  • the probability of pulling a red marble out of bag of colored marbles is 3:7.if you were to pull color marbles out of the bag (o
    11·1 answer
  • Shirts are on sale for 20% off. You buy two of them. As you pay, the cashier says, "20% off of each shirt means 40% off the tota
    9·1 answer
  • What is the vertex form of: y = 3x^2 - 12x + 5
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!