Find the values of m for which the equation

x^2 +2mx + 9 = 0 has no real roots

Answers

Answer 1

Answer:

Interval notation for m: (-3,3)

Inequality notation: -3<m<3

In words: Anything between -3 and 3 without including either -3 or 3.

Step-by-step explanation:

If we want no real roots then b^2-4ac must be less than 0.

a=1

b=2m

c=9

These values were found by comparing your equation to ax^2+bx+c=0.

b^2-4ac<0 is what we are trying to satisfy

(2m)^2-4(1)(9)<0

4m^2-36<0

Divide both sides by 4:

m^2-9<0

Add 9 on both sides:

m^2<9

m^2<9 when m<3 and m>-3.

Interval notation (-3,3).


Related Questions

i need answers please thanks

Answers

Answer:i need this pls

Step-by-step explanation:

Correct answer is B

ANSWER ONLY IF U KNOW, OR THINK U KNOW.


(ILL MARK U BRAINLIEST)

Answers

Answer:

I KNOW FOR SURE

Step-by-step explanation:

if that's all the question is then I definitely know the answer ;)

if you forgot to write the rest then hmu haha

A new school will have three playgrounds. Two playgrounds will be large and one playground will be small. The district administrator had 3 5/8 truckloads of concrete delivered for each of the two large playgrounds and 1 9/10 truckloads of cement delivered for small playground. If the cost of the concrete is $2,000 per 1/2 truckload, the concrete for the three playgrounds will cost $_____.


Blank options

-18,300

-22,100

-32,600

-36,600


plz help I don't understand this at all.

Answers

Answer:

you multiple two numbers and you devide both sides you get the answer

1/2 (x + 8) - 15 = - 3

Answers

Answer:

x=16

Step-by-step explanation:

Heres the work below

Hope this Helps

What number does this Roman numeral represent? MCCLXXXVIII

Answers

Answer:

1280 is the answer. hope it helps you

please solve the question

Answers

Cannot see the question

Simplify the expression. Write your answer in exponent form. (6^2*6^9/6^7)^5

Answers

Answer:

6^4

Step-by-step explanation:

6^2*6^9/6^7

6^(2+9)/6^7

6^(11-7)

6^4 or 1296

what is the unknown number to ( 6 x 2) + (6 x 3) = 6 x __

Answers

Answer:

6

Step-by-step explanation:

6

Please help me with this question.

Answers

Answer:

The answer would be 6.66666666667 to be exact or just 6.66.

-Herobrine

Brainliest will be appreciated thank you!

Answer:

6.6 or 6.66

Step-by-step explanation:

Ryan and his brother Will went to the store to buy a new baseball bat. The baseball bat costs $97.99. Ryan had saved enough money to pay 38% of the cost of the bat. How much money did Ryan have to help pay for the bat?

Answer my question for 10 points

Answers

Answer:

Hello! The answer is $37.24.

Step-by-step explanation:

By simple calculations, 38% of $97.99 equates to $37.2362. However, since this is a money-based question, we have to round the last two numbers up - which basically equals $37.24!

Answer:

Ryan had $37.24

Step-by-step explanation:

4.
A recipe for 12 cookies calls for 15 cups of milk, 2 cups of flour, and 1 cups of other
ingredients. How many total cups of milk, flour, and other ingredients are needed to make
24 cookies?
a) 103 cups
b) 116 cups
C) 11 cups
d) 103 cups

Answers

Answer:

2 cups of milk, 4 cups of flour, and 2 cups of other ingredients

Step-by-step explanation:

multiply them by 2

What is the coefficient of the term 5/3 xy?

A. 5xy

B. 5/3

C. 5

D. 1/3

Answers

The answer is A. Look at it and it’s seam like it is A.

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!2

Answers

[tex]\large\red{┈──┈──┈──┈──┈──┈──┈──┈──┈─}[/tex]

The best option is B.

B. The rate of change of the cost of the taxi ride is 3.00 per minute.

Questions. [Factorial]

3 + (2! × 2!) = ...... ​

Answers

[tex]\\ \sf\longmapsto 3+2!2![/tex]

[tex]\\ \sf\longmapsto 3+2(2)[/tex]

[tex]\\ \sf\longmapsto 3+4[/tex]

[tex]\\ \sf\longmapsto 7[/tex]

[tex] \: \: \: \: \: [/tex]

[tex]⟹7[/tex]

Step-by-step explanation:

[tex]3 + (2! \times 2!)[/tex]

calculate the factorial

[tex]3 + (2 \times 2)[/tex]

multiply the number

[tex]3 + 4[/tex]

add the numbers

[tex]⟹7[/tex]

hope it helps

[tex] \: \: \: \: \: \: \: [/tex]

Meaning of =N

please

Answers

hope it is helpful to you please follow give brainliest answer

your ans. in above pic

Russell is eating at a restaurant. His total bill comes to $44.85. If Russell decides to leave a tip that is approximately 20% of the total bill, how much should he leave for the tip?
$9.00
$0.09
$54.00
$8.00

Answers

Answer:

I'm thinking is I'm not sure is is answer 0.9

Step-by-step explanation:

am not sure my answer guys because naka tulong din na man too

Work out the size of angle x

Answers

X = 13°

This is because the 85° opposite angle is part of the triangle, and the 98° is apart of a straight line (180°-98°=82°) in which the 82° is also apart of the triangle (because of the c pattern) and lastly as it is a triangle you just do 180°-(85°+82°) which equals 13°

Answer:

Opposite angles are equal

Corresponding angles are equal

Angles on straight lines adds to 180

Angles in triangle adds to 180

180-98=82

82+85=167

180-167=13

Answer is 13

Solve the linear systems using multiplication 6x - 12y = 15;2x - 4y = 6 -​

Answers

Answer:

your answer would be 1

Step-by-step explanation:

The whole equation is divided by 3 to get 2x-4y=5, but since there is a 6 we need to subtract 1 away to get 5.

Can some help me plzzzz

Answers

Answer:

Should be 9 grams

Step-by-step explanation:

240÷40=6 576÷2÷2÷2÷2÷2÷2=9

can some one help me pleaseeee :(

Answers

a) 5/8

b) 3/5

Hope this helps

simplify, (xy+yz)² - 2x²y²z² and find the value when x=-1, y=2 and z=1

plz answer this fast plz u will give you brainly plz help me fast only 5min left to answer​

Answers

Simplify:

We have

(xy + yz)² - 2x²y²z

If,

x = -1, y = 2 and z = 1

Putting value:

(xy + yz)² - 2x²y²z

➡ (-1×2 + 2×1)² - 2×-1²×2²×1

➡ (-2 + 2)² - 2×1×4×1

➡ (0)² - 8

➡ 0 - 8 = -8,answer

help me with this pls asap

Answers

Answer: 0.29

Step-by-step explanation:

Divide x by y.  See attachment.

an investor owns shares of stock a and stock b. the investor owns a total of 200 shares with a total value of $4000. How many shares of each stock does the investor own?

Answers

Answer:

a = 80 shares of stock A

b =120 shares of stock B

Step-by-step explanation:

Solved by creating a system of equations

Let a be number of shares of stock A

B number of shares of stock B

a + b = 200

9.5a + 27b = 4000

Solving the two equation

a = 80 shares of stock A

b =120 shares of stock B

Can you explain how to solve this problem, already know the answer

Answers

So, the slope is -3/5, and the y axis is unidentified.

A point is located at (6,-5). We will use this point.

In order to get the y-axis, we will use 5 from the slope because the denominator allows us to move left and right.

We will also use 6 from the point to give us a dot in the x-coordinate.

We will then divide 5 from the 6 to give us how much we have to go up or down

6/5

We will then use the -3 in the slope.

We will times -3 to the 6/5 in order to know how much we have go up or down.

-18/5 + 5 (from the point)((and since we are moving back, we will add a negative) (My problem))= 1 2/5 (y-intercept)

y = -3/5x + 1 2/5

The y = 13, we will plug it in the equation.

13 = -3/5x + 1 2/5 (subtract 1 2/5 on both sides)

11 3/5 = -3/5x (times 5 on both sides)

-3x = 58 (divide -3 on both sides)

x = -58/3

How much is 25% of a 4 gallon jug of milk?

Answers

the answer is 1 because .25x4=1

Answer:

1 gallon

Step-by-step explanation:

4 / 4 = 1

(because 25% is 1/4 of 100%)

:)

What is 20 dived by 5 +19-6

Answers

Answer:

17

Step-by-step explanation:

20 divided by 5 + 19 - 6

20 divided by 5 = 4

4 + 19 = 23

23 - 6 = 17

Math
Convert from fraction to decimal. 5/8

Answers

Answer:

5/8=0.625

Step-by-step explanation:

5/8=decimal

5/8=0.625

Hope this helps :)

Answer:

0.625

Step-by-step explanation:

We know that 1/8= 0.125, so to get 5/8 as a decimal you would do 5 times 0.125.

Is ABC" ADEF? If so, identify the similarity postulate or theorem that

applies

15

A. Similar - AA

B. Similar - SAS

C. Similar - SSS

D. Cannot be determined

Answers

here is answer

- BRAINLIEST answerer

The ∆ABC ~ ∆DEF by AA similarity Criteria.

What is Similarity?

Triangles with the same shape but different sizes are said to be similar triangles. Squares with any side length and all equilateral triangles are examples of related objects. In other words, if two triangles are similar, their corresponding sides are proportionately equal and their corresponding angles are congruent.

Two angles in ∆ABC and their equivalent angles in DEF are congruent.

Hence, it follows that the triangles' third pair of angles would likewise be similar.

So, the three sides of ∆ABC and corresponding sides of ∆DEF will be proportional to each other.

Then here the AA Similarity Criterion will be used.

Thus, ∆ABC ~ ∆DEF by AA Similarity rule.

Learn more about similarity here:

https://brainly.com/question/25502802

#SPJ7

Please help I do not understand

Answers

Answer:

-3/7

Step-by-step explanation:

Hi,

First of all, we know that the slope is not undefine because both the x-coordinates are not the same.

To find the slope, do change in y/change in x. Here, it would be ((2/7)-(5/7))/(2-1) or (-3/7)/1. Hence, the slope is -3/7.

4. FGH - MNP. Solve for x.

Answers

Answer:

x = 6

Step-by-step explanation:

Since the triangles are similar then the ratios of corresponding sides are in proportion, that is

[tex]\frac{MN}{FG}[/tex] = [tex]\frac{NP}{GH}[/tex] , substitute values

[tex]\frac{x}{12}[/tex] = [tex]\frac{10}{20}[/tex] = [tex]\frac{1}{2}[/tex] ( cross- multiply )

2x = 12 ( divide both sides by 2 )

x = 6

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