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
ZanzabumX [31]
3 years ago
8

Check all solutions to the equation. x² =-4

Mathematics
2 answers:
vovangra [49]3 years ago
4 0

Answer:

x=2i, -2i

Step-by-step explanation:

BARSIC [14]3 years ago
3 0

Answer:

2,-2 or maybe no real solutions but i went with 2,-2

Step-by-step explanation:

You might be interested in
Can you please help me with this one
My name is Ann [436]

Answer:

6x=-60

Step-by-step explanation:

3 0
3 years ago
How many numbers between 1 and 1000 do not contain the digits 8, and 9 ?
sammy [17]

Answer:

998

Step-by-step explanation:

I haven't included the <em><u>1</u></em> or the <em><u>1000</u></em>

6 0
3 years ago
Read 2 more answers
A lake near the Arctic Circle is covered by a 2-meter-thick sheet of ice during the cold winter months. When spring arrives, the
Kaylis [27]

Answer:

The answer would be y-intercept and a point that is NOT an intercept

Step-by-step explanation:

To describe a point on the graph, we need a corresponding  

(x,y)(x,y)

(x,y)

left parenthesis, x, comma, y, right parenthesis

pair.

In our case, these are corresponding values of weeks since spring arrives and thickness of ice.

weeks since spring arrivedthickness of ice↓↓(x,y)\begin{aligned} \scriptsize\text{weeks since spring arrived}&\quad\scriptsize\text{thickness of ice} \\ \downarrow&\quad\downarrow \\ \large (x &,\quad\large y) \end{aligned}

weeks since spring arrived

↓

(x

​

thickness of ice

↓

,y)

​

To describe the slope of the graph, we need information about the rate of change of the relationship.

In our case, this is the rate at which the thickness of ice changes over time (in meters per week).

Hint #2

2 / 4

The ice is  

22

2

2

meters thick at the start of spring, when  

00

0

0

weeks have passed. This corresponds to the point  

(0,2)(0,2)

(0,2)

left parenthesis, 0, comma, 2, right parenthesis

and is a  

yy

y

y

-intercept.

Hint #3

3 / 4

After  

33

3

3

weeks, the sheet is only  

1.251.25

1.25

1, point, 25

meters thick. This corresponds to the point  

(3,1.25)(3,1.25)

(3,1.25)

left parenthesis, 3, comma, 1, point, 25, right parenthesis

and is not an intercept.

Hint #4

4 / 4

The  

yy

y

y

-intercept and a point that is not an intercept is given

7 0
3 years ago
Can you help me? Please
aksik [14]

x° = 60° (alternate angle)

Step-by-step explanation:

Hope it helps you!

4 0
3 years ago
Given the similar triangles shown in the diagram below :
Nesterboy [21]

Answer:

a.) (x-3)(x-3) = 25 + (x-4)(x-4)

x^2 - 6x + 9 = 25 + x^2 - 8x + 16

-6x + 9 = -8x + 41

2x + 9 = 41

2x = 32

x = 16

b.) 16 - 4 = 12

AB = 12

c.) 16 - 3 = 13

AC = 13

[btw I don't know if this is the method your teacher wants as it does not use the similar triangle :/ but it is still correct :) so good luck bro]

6 0
3 years ago
Read 2 more answers
Other questions:
  • Number 6 mainly and any other if you want to help:) looka t the pic
    10·1 answer
  • |6a-5|=4a What are the solutions to a?
    13·1 answer
  • You have violin lessons every fourth day and singing lessons every
    12·1 answer
  • Tessa claims that a rotation of 90° clockwise about the center of some polygons will carry the polygon onto itself. Select two p
    8·2 answers
  • Avery's yard has an area of 5/4 acres, and Logan's yard has an area of 3/2 acres. What is the ratio of the area of Avery's yard
    8·2 answers
  • Can someone please help me ill give a brainliest
    5·2 answers
  • What is the slope of the line?
    7·2 answers
  • Mr. Ealy works at a shoe store. Mr. Ealy's hourly pay is $14, and he also gets 8% commission on sales. He worked 80 hours over t
    7·1 answer
  • Eva took a taxi from her house to the airport. The taxi company charged a pic of feet of 3 dollars and 20 cents, plus 3 dollars
    8·1 answer
  • To break the school’s record, the boys’ time had to be faster than
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!