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
balu736 [363]
3 years ago
11

Given 2x² = -8, x is ____

Mathematics
2 answers:
IrinaVladis [17]3 years ago
5 0

Answer:

2x² = -8

x² = -4

The answer is no real solutions (x ∉ R) because a perfect square cannot be negative.

scZoUnD [109]3 years ago
3 0

Answer:

No real solutions, but there are complex solutions

x=2i and x = -2i.

Step-by-step explanation:

2x² = - 8

x² = - 4

x = +/- √(-4)= +/-√[(-1)*4] = +/-[√4 *√(-1)] = +/- [2*i]

x=2i and x = -2i

You might be interested in
Irving can I remember the correct order of the five digits on his ID number he does remember that the ID number contains the dig
Cloud [144]

Answer: \frac{27}{125}

Step-by-step explanation:

Here the total numbers are 1,  4,  3,  7,  6

Since the total number of possible arrangement = 5\times 5 \times5 \times 5 \times 5=5^5

The total number of the odd numbers in the given numbers = 3

Thus the possible arrangement that the first three digits will be odd numbers = 3\times 3\times 3\times 5\times 5=3^3\times 5^2

Thus, the probability that the first three digits of Irvings ID number will be odd numbers = the possible arrangement that the first three digits will be odd numbers / total possible arrangement =  \frac{3^3\times 5^2}{5^5} = \frac{3^2}{5^{5-2}}

= \frac{3^3}{5^3} = \frac{27}{125}

5 0
3 years ago
Evaluate 2x + 1 when x = 7.
Tatiana [17]

Answer:

15

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
10. What is an expression for the perimeter of the triangle?
Whitepunk [10]

Answer:

See explanation, and comment for more details!

Step-by-step explanation:

10. The perimeter of any shape is the sum of the length of the sides, which means that the perimeter of this triangle is x+y+z.

11. Since this is a right triangle, the two legs form the height and base. The area of this triangle is therefore x*y/2.

12.

a. x=3, y=4, z=5

b. x=\sqrt{2}, y=\sqrt{2}, z=2

c.x= \sqrt{3}, y=2, z=\sqrt{7}

Hope this helps!

4 0
3 years ago
What is the equation
Alenkinab [10]

\sqrt[2 ]{x} |

\sqrt[?]{?}
5 0
2 years ago
This is my test question Round 1.391 to the nearest hundredth and I’m have a hard time I don’t understand I need the answer!!!
viva [34]

Answer:

1.39

Step-by-step explanation:

nearest hundredth is 9

therefore 1.39 ig

5 0
2 years ago
Read 2 more answers
Other questions:
  • Find the anual premium for 25,000 of life insurance at 22.24 per 1,000 dollars how do you solve this
    12·1 answer
  • Consider the following data set: 9,8,8,2,0,0 find the median
    14·1 answer
  • Help please<br> I think its the distributive property
    6·2 answers
  • 6 meters to 60 centimeters
    5·1 answer
  • Could somebody solve a and c for me? Please help!
    14·2 answers
  • 2) The subtotal of your computer purchase was $398.50. If the sales tax rate is
    7·1 answer
  • PLS HWELPPP ILL GIVE BRAINLIEST + EXTRA POINTS
    9·1 answer
  • CAN SOMEONE HELP ME PLSS IM FAILING AND I RLLY NEED HELP HELP ASAP HELP MATH MATH MATH HELPPPPPPPPPP
    14·1 answer
  • Which line fits the data graphed below?
    15·1 answer
  • A batting average in baseball is calcite by dividing the number of timesavers player hits the ball by the number of times the pl
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!