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
Solve the equation. Round to the nearest hundredth. Show work.
muminat

Answer:

Final answer is approx x=0.16.

Step-by-step explanation:

Given equation is 2.8\times 13^{4x} +4.8 = 19.3

Now we need to solve equation 2.8\times 13^{4x} +4.8 = 19.3 and round to the nearest hundredth.

2.8\times 13^{4x} +4.8 = 19.3

2.8\times 13^{4x} = 19.3-4.8

2.8\times 13^{4x} = 14.5

13^{4x} = \frac{14.5}{2.8}

13^{4x} = 5.17857142857

\log(13^{4x}) = \log(5.17857142857)

4x \log(13) = \log(5.17857142857)

4x = \frac{\log(5.17857142857)}{\log\left(13\right)}

4x = 0.641154659628

x = \frac{0.641154659628}{4}

x = 0.160288664907

Round to the nearest hundredth.

Hence final answer is approx x=0.16.

4 0
3 years ago
Im taking a test & i don’t understand can someone help
Shtirlitz [24]
62 units hope this helps
4 0
3 years ago
Gary took 7 hours to mow 4 lawns,then at that rate, how many lawns could be mowed in 35 hours? Write a different question plz
Svetach [21]

Answer:

The total amount of lawns to be mowed would be 20 in 35 hours.

Step-by-step explanation:

It takes an hour and 45 minutes to mow one lawn. When you multiply the 7 hours by 5 you get 35 hours. Same thing if you multiply the 4 lawns by 5 you get 20 lawns.

4 0
3 years ago
Read 2 more answers
The Svensons find a refrigerator valued at $2,300 on sale for $1,900. They decided to withdraw $500 from savings to
Flura [38]

Answer:

The Svensons' assets increased by $1,800.

Step-by-step explanation:

I just took the quiz!

3 0
3 years ago
Read 2 more answers
Help Me With These <br> #Geometry
Damm [24]
They are mad as easy try it on your own your answer is suppose to be 80
5 0
3 years ago
Other questions:
  • plant A is 18 inches tall after one week 36 inches tall after two weeks 56 inches tall after three weeks plant B is 18 inches ta
    15·1 answer
  • The ______ of a radical expression is the number indicating which root (square root, cube root, etc.) is meant.
    5·2 answers
  • Anyone really good at stats?
    11·1 answer
  • In the 30-60-90 triangle below, side s has a length of _ and side q has a length of _.
    8·1 answer
  • The length of a rectangle is equal to triple the width. What are the dimensions of the rectangle if the perimeter is 88cm.
    7·1 answer
  • Please help me with geometry
    10·1 answer
  • math club has 36 members of which 13 are males and the rest are females. what is the ratio of females to males.​
    11·1 answer
  • The two rectangles below are similar. What is the measurement of the missing side of the rectangle?
    11·1 answer
  • 150% of 150 is what number? (15 points I think?)
    8·2 answers
  • A large software company gives job applicants a test of programming ability, and the mean for that test has been 160 in the past
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!