Can someone help me know how to do this problem In finding what I can put in for (c) in order to get 2 imaginary solutions

Can Someone Help Me Know How To Do This Problem In Finding What I Can Put In For (c) In Order To Get

Answers

Answer 1

Answer:

To get 2 imaginary solutions, c must be less than -2

Step-by-step explanation:

The general form of the quadratic equation is:

[tex]ax^2+bx+c=0[/tex]

Solve the quadratic equation by using the formula:

[tex]\displaystyle x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}[/tex]

The equation to solve is:

[tex]-2x^2+4x+c=0[/tex]

In our equation: a=-2, b=4, c=unknown

For the roots to be imaginary, the argument of the square root must be negative, that is:

[tex]b^2-4ac<0[/tex]

Substituting the known values:

[tex]4^2-4(-2)c<0[/tex]

[tex]16+8c<0[/tex]

Subtracting 16:

[tex]8c<-16[/tex]

Solving:

[tex]c<-2[/tex]

Thus, to get 2 imaginary solutions, c must be less than -2


Related Questions

Complete the factorization of 3x2 – 10x + 8.

3x^2 – 10x + 8 = (x – _ )( _ x – 4)

Answers

(3x-4)(x-2) is the answer

Answer:

picture of answer on edge 2023.

Step-by-step explanation:

I'm doing simplifying expressions with exponents

Was wondering what it meant byexpress as a power of 2?​

Answers

Answer:

Expressing a number in a power of 2 means that you have to figure out how many times you should multiply 2 by itself so the product will be that number.

The number is expressed as 2^n

For example:

Express 16 as a power of 2:

To get 16, you have to multiply 2 by 4 times.

2 × 2 × 2 × 2 = 16

16 = 2^4

Then the answer is 2^4

Math help please! - ( 5/5 )

Answers

Answer: -24

Step-by-step explanation: Convert the decimal into a fraction. Use -a/b=a/-b=-a/-b, to rewrite the fraction. Simplfy the complex fraction. Multiply both sides of the equation by 6. Move constant to the right-hand side and change its sign. Add the numbers Divide both side of the equation by -5 and you get -24.

The correct answer is 24

What is the slope intercept for the line below?

Answers

to find the slope from two points, use the equation m = (y2-y1)/(x2-x1)

substitute
m = 4-2/5-0 = 2/5
the slope is 2/5

the line intercepts the y axis at (0,2), so the y intercept (b) is 2

slope intercept form: y = mx + b

so the slope intercept equation for the line is:
y = 2/5x + 2

5. (a) (x + 2y)(-3)​

Answers

Answer:

- 3x - 6y

Step-by-step explanation:

Given

(x + 2y)(- 3) ← multiply each term in the parenthesis by - 3

= - 3x - 6y

-3x - 6y is the answer

Find its notation:
(x +6, y + 3)

Answers

Answer: i know the answer but i cant write it all on here

Step-by-step explanation:

solve. 7(x+2)-10=7x+4

Answers

Answer:

all real numbers

Step-by-step explanation:

7(x + 2) - 10 = 7x + 4

7x + 14 - 10 = 7x + 4

7x + 4 = 7x + 4

4 = 4

the answer is all real numbers because 4 will always equal 4

Help plz I will giv brainliest if it's right

Answers

Answer:

d=90

e=39

f=141

Find the slope:
A.2/5
B.-2/5
C.5/2
D.-5/2

Answers

Answer:

5/2

Step-by-step explanation:

Once upon a time a farmer went to a market and purchased a wolf, a goat, and a

cabbage. On his way home, the farmer came to the bank of a river and rented a

boat. But crossing the river by boat, the farmer could carry only himself and a

single one of his purchases: the wolf, the goat, or the cabbage.If left unattended

together, the wolf would eat the goat, or the goat would eat the cabbage.The

farmer's challenge was to carry himself and his purchases to the far bank of the

river, leaving each purchase intact. How did he do it?

Answers

Given that the wolf would eat the goat, the goat would eat the cabbage but the wolf wouldn't eat the cabbage.

So, leave the wolf and cabbage behind (at side 1) and take the goat to the other side (side 2) of the river.

Then, come back with the empty boat from side 2 to side 1.

Take the wolf (or the cabbage) from side 1 to side 2 of the river.

Now, observe that, the goat is already on side 2, and the wolf and the goat can't be on the same side as the wolf would eat the goat, So, leave the wolf on side 2 and come back with the goat from side 2 to side 1.

Leave the goat on side 1 and take the cabbage from side 1 to side 2.

Now, come back with the empty boat from side 2 to side 1 and take the goat from side 1 to side 2.

In this way, the farmer can carry himself and his purchase to the other side of the river.

-4/5 - (-2/5) + 4/7 evaluate the expression help plz

Answers

Answer:

6/35

Step-by-step explanation:

-4/5 - ( - 2/5 ) + 4/7

-4/5 - ( - 2/5 ) + 4/7

-4/5 - [tex]\frac{-2}{5}[/tex]+ 4/7

[tex]\frac{-2}{5}[/tex] + 4/7

6/35

Answer these questions

Answers

Answer:

1. -1

2. 25°

3. 26 1/4

Step-by-step explanation:

1. 14-8 is 6, -2 - 4 = -6, 6 ÷ -6 is -1

2. 75 + 80 = 155, 180 - 155 = 25°

3. cross multiply 4/5 = 21/x  (4x= 105) = 26 1/4 or 105/4

I hope this helped, please mark Brainliest, thank you!

Answer:

What she said

Step-by-step explanation:

how can you find 10% of any number?

Answers

Answer:

Use Desmos!

Step-by-step explanation:

Just type 10% into the calculator and it will automatically say

" 10% of " then you can type in any number you want to be

ten percent of!

Hope this helps! <3

Answer: you would do 10 over 100 and equal it to the number u want to find over the number of full amount of what u want.

Step-by-step explanation:

10/100 = x/25 and than you’d cross multiply . And than set x to one side by itself to find what x equals and that should be ur answer

Points $A$ and $B$ have the same $y$-coordinate of 13, but different $x$-coordinates. What is the sum of the slope and the $y$-intercept of the line containing both points?

Answers

Answer:

13

Step-by-step explanation:

This one sounds really hard, but its actually really easy once you think about it.

The problem states that both y coordinate are 13, but have different x coordinates. It asks for the sum of the slope and the y intercept. The y intercept will always have 0 as x.

To find a slope, the equation is y2-y1/x2-x1. In this case, we don't actually know what x is. But we do know what y is:

13-13/x2-x1

0/x2-x1

0

So the slope is 0.

Since we know that the y intercept has to have 0 as x, we don't actually need to know what x is.  

So the y intercept is 13.

13+0=13.

Answerrr pls I am giving out brainliest :)

Answers

Answer:

The answer would be 9

The ratio of the number of songs Brody bought to the number of songs Jayliah bought is 2:3. The ratio of the number of songs Jayilah has bought to the number of songs Sadie bought is 4:5. If Sadie has bought 30 songs how many songs has Brody bought.

Answers

Answer:

Brody purchased 16 songs.

Step-by-step explanation:

Ratio of the number of songs purchased by Brody(B) and Jayliah(J) = 2 : 3

[tex]\frac{B}{J}=\frac{2}{3}[/tex] ------(1)

Similarly ratio of the songs purchased by Jayliah(J) and Sadie(S) = 4 : 5

[tex]\frac{J}{S}=\frac{4}{5}[/tex] -------(2)

If Sadie bought the songs (S) = 30

From equation (2),

[tex]\frac{J}{30}=\frac{4}{5}[/tex]

J = [tex]\frac{4\times 30}{5}[/tex]

J = 24

By substituting the value J = 24 in equation (1),

[tex]\frac{B}{24}= \frac{2}{3}[/tex]

B = [tex]\frac{2\times 24}{3}[/tex]

B = 16

Therefore, number of songs purchased by Brody = 16.

can someone help me plz

Answers

Answer:

communitive

Step-by-step explanation:

You changed +2 and -x

Answer:

Communitive.

Step-by-step explanation:

I believe I am right. I hope this helps you :)

LEAST TO GREATEST PLSSS

Answers

Answer:

-0.8, 7/9, √3

Step-by-step explanation:

please help! will give brainliest if correct :)!

Answers

Answer:

its c y

Step-by-step explanation:

Plllssss ASAP help!!!!

One word.... Brainliest
Please try ur best!!

Answers

Answer:

12. 27/200

13. 68

14. 6 (It's asking for greatest common factor)

Jaylon makes $57,000 and is getting annual raises of $2,500. Anita makes $64,000 and is getting annual raises of $1,500. How many years, y, will it take for Jaylon and Anita to make the same amount of money?
A. 121
B. 7
C. 1.75
D. 30.25

Answers

C would be the answer

help me please!!!!!!!!!!!!!!!!!​

Answers

Step-by-step explanation:

please ignore the 8.7

and on the graph please don't connect the line with the values with 30000 feet and the graph on the time place is scaled with 1/4 hours so you know one line represents quarter hour . I hope you understood best of luck

Evaluate the expression

Answers

Answer:

1

Step-by-step explanation:

2+4=6

3*2=6

6/6=1

The answer would be 1.

2+4= 6 6
———— —- =1
3•2= 6 6

I just need help with this algebra question 1 and 2 part!!

Answers

Answer:

rate of change: -3000 feet per minute

the rate of change is showing how many feet the plane descents each minute

Solve 58 - 10x<20+9x

Answers

Answer:

C

Step-by-step explanation:

58-10x≤20+9x

58≤20+19x

38≤19x

2≤x or x≥2

2x
Y=——— solve for a
a + 2b

Answers

Answer:

y= 2b

Step-by-step explanation:

a +2b

so make a the subjects of formular

a= 2b

An angle measures 40 more than the measure of its supplementary angle. What is the measure of each angle

Answers

Sum of two angles that are supplementary = 180°

Let the first angle be x .

Then the other angle = x + 40

Measure of each angle =

[tex]x + x + 40 = 180[/tex]

[tex]2x + 40 = 180[/tex]

[tex]2x = 180 - 40[/tex]

[tex]2x = 140°[/tex]

[tex]x = \frac{140}{2} [/tex]

[tex]x = 70°[/tex]

Which means :-

The first angle:-

[tex]= x = 70°[/tex]

The second angle :-

[tex]x + 40[/tex]

[tex]70 + 40[/tex]

[tex] = 110°[/tex]

Therefore , the two supplementary angles are 70° and 110° .

Answer:

65 and 25

Step-by-step explanation:

PLEASE HELP QUICK!!!! m ∠ 2 is 60°. m ∠4 is half of m ∠2. What is m ∠3?

Answers

Answer:

fourty five

Step-by-step explanation:

45 would be your answer

9. Find the slope represented in the table
below. Show all work.
Х
y
7
-30
11
-54
13
-66
20
- 108

Answers

Answer:bruh I’m still tryna figure this out

Step-by-step explanation:

What are the two things that do NOT prove that triangles are congruent?

Answers

Answer:

If the side which lies on one ray of the angle is longer than the other side, and the other side is greater than the minimum distance needed to create a triangle, the two triangles will not necessarily be congruent. to "swing" to either side of point G, creating two non-congruent triangles using SSA.

Step-by-step explanation:

Hope this helped, Have an amazing day!!

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