Find the discriminant.
x2–3x–9=0

Answers

Answer 1

Answer:

45

Step-by-step explanation:

The discriminant is b^2 - 4(a)(c) so just plug all the values in.

(-3)^2 - 4(1)(-9) = 45


Related Questions

David lives approximately 485 meters from max. What is the distance In Kilometers

Answers

Answer:

.485

Step-by-step explanation:

A meter is .001 of a kilometer

Find the missing part.

Answers

Answer:

15

Step-by-step explanation:

9/6=x/10

why? they segments are similar

i’ll mark the brainliest answer, please help ASAP

Answers

Answer:They both Look tangent to me, they both have a straight line

Step-by-step explanation:

What is the surface area

Answers

Answer:

red) area = 59.2 km²

Step-by-step explanation:

area of bottom 4 x 4 = 16

area of 4 sides = 4 (1/2)(4)(5.4) = 43.2

16 + 432 = 59.2 km²

Answer:

Step-by-step explanation:

lateral area = 2(base)(slant height) = 2·4·2 = 16 km²

base area = base² = 4² = 16 km²

surface area = 16 + 16 = 32 km²

HELPPPPPPPPPPPPPPP


Question 3 (1 point)


What is the domain of the function f(x)=2x+3

?
Question 3 options:


x>0



x>3



x>−3



All real numbers
Question 4 (1 point)


What is the range of the functionf(x)=2x+3

?
Question 4 options:


y>0



y>3



y>−3



All real numbers
Question 5 (1 point)


What is the end behavior of the functionf(x)=2x+3

?
Question 5 options:


As x→−∞, y→∞
and x→∞, y→3

.


As x→−∞, y→−∞
and x→∞, y→−3



Asx→−∞, y→3
and x→∞, y→∞

.


Asx→−∞, y→−3
and x→∞, y→−∞.

Answers

Answer:

3) All real numbers

4) y > 3

5) C) the only choice that ends with a POSITIVE ∞

Answer:

3. All real numbers

4. B. y>3

5. C (the one with the POSITIVE infinity sign.)

I just did the exact same quiz and I got all of the right answers when I did it :)

Factor the expression using the GCF. 58+28=

Answers

Answer:

2(29+14)

Step-by-step explanation:

Given function:

To find the GCF of 58+28..

Find the GCF of 58+28:

[tex]58=29[/tex]·[tex]2[/tex] [tex]28=14[/tex]·[tex]2[/tex]

Rewrite:

[tex]2(29+14)[/tex]

Therefore, using GCF, the new expression would be 2(29+14)..

The expression 58 + 28 can be factorized as 2 (29 + 14).

What is GCF?

GCF which is the abbreviated form for Greatest Common Factor of two numbers, as the name implies, is the greatest common factor of both the numbers.

GCF of two numbers can be found using prime factorization.

Given the expression 58 + 28.

To find the GCF of two numbers, list the prime factors of these two numbers.

58 = 2 × 29

28 = 2 × 14 = 2 × 2 × 7

The only common factor is 2.

So the greatest common factor is 2.

58 + 28 = (2 × 29) + (2 × 14)

Taking the common factor of 2 outside the brackets,

58 + 28 = 2 (29 + 14)

Hence the expression 58 + 28 can be factorized as 2 (29 + 14) using the greatest common factor.

To learn more about GCF, click on the link given :

https://brainly.com/question/11444998

#SPJ2

please help. sad moment.

Answers

Answer:

10

Step-by-step explanation:

The radius is half the diameter

Answer:

d) 10in is the answer

Step-by-step explanation:

step 1 - Radius is half of the diameter.

step 2 - 20 ÷ 2 = 10

step 3 - Hence the answer is 10in.

Hope it helps,

Please mark me as the brainliest

Thank you

It takes 9 hours for 8 men to paint a room,
How many men would be needed to paint the room in 4 hours?

Answers

Answer:

6 people

Step-by-step explanation:

which of the following is the correct graphical representation and solution to the system of equations

y= 2/3x + 5 and y= x+3

(look at the picture)
another option is (1,4)

Answers

Answer:

Option a

Step-by-step explanation:

Given equations are ,

y = ⅔x + 5 y = x + 3 .

Here y intercept is 5 and 3 respectively .From looking at options it's clear that the option 1 is correct since it has y Intercepts as 5 and 3 respectively.

Hope it helped !

9. Select a set of corresponding angles.
A Angles M and D
B Angles B and L
C Angles C and J
D Angles K and A

Answers

Answer:

A. Angles M and D

determine the missing angle ​

Answers

Answer:

46°

Step-by-step explanation:

These angles are same-side supplementary, therefore they add up to 180°.

180 - 134 = 46°.

A cyclist is riding a bicycle whose wheels have a diameter of 76 centimeters . Suppose she is traveling at 33 kilometers per hour . ( A useful fact : 1 km = 1000 m . ) ( a ) Find the angular speed of the wheels in radians per minute . ( b ) Find the number of revolutions the wheels make per minute . Do not round any intermediate computations , and round your answer to the nearest whole number .

Answers

Answer:

109

Step-by-step explanat  

i help you

what is the slope of this line, simplify if possible!

Answers

Answer:

The slope is 0

Step-by-step explanation:

the line is straight, so the slope is 0. I hope this helps

Need help with ratios quick plss

Answers

X/3=y this is what I got hopes this helps

????????????????????????

Answers

Answer:

3 c  3 3 3 33  3 the 3 one

Step-by-step explanation:

(-4x - 7.5 = 3312.5) + (4x + 4y = 2000)

(please im in a test rn)

Answers

Answer:

y= 1330

Step-by-step explanation:

it might be wrong but

-4x -7.5 = 3312.5

4x +4y = 2000      (x cancels out)

4y -7.5 = 5312.5

4y = 5320

y= 1330

One supermarket sold 72 cases of Zing soap, but only one-third as many cases of Essence soap. If each case holds 156 bars of soap, how many bars were sold in all

Answers

The sold 14,976 in total 1/3 of 72 is 24+72=96
96*156 =^

There will be 1334 bars sold in all if each case holds 156 bars of soap.

From the question, we are told that one supermarket sold 72 cases of Zing soap, if there is only one-third as many cases of Essence soap, then;

Amount of cases of Essence soap = one-third of 72

Amount of cases of Essence soap = [tex]\frac{1}{3} \times 72[/tex]

Amount of cases of Essence soap = 24cases

If each case holds 156 bars of soap, then we can write:

1 case = 56 bars of soap

To get the total bars that were sold. we can write:

24cases = x

DIvide both expressions:

[tex]\frac{1}{24} = \frac{56}{x} \\cross \ multiply\\1 \times x=24 \times 56\\x=1334 bars[/tex]

This shows that 1334 bars were sold in all

Learn more here: https://brainly.com/question/13805442

Y=1/4 (x+2)(x – 6
1) (13 points) Study the equation:
A) What are the x-intercepts of this equation? Show your work.

Answers

I have no idea I’m answering this because I need to ask more questions

Multiple Choice

Look at the graph.

The graph shows a line through the points left parenthesis negative 1 comma negative 2 right parentheses and left parenthesis 2 commas 1 right parenthesis.

The slope of the line is _______.
A. positive
B. negative
C. zero
D. undefined

Answers

Answer:

the slope is POSITIVE (answer A)

Step-by-step explanation:

The line goes through: (-1, -2)  and ( 2, 1)

Then the slope can be calculated as:

slope = (y2 - y1) / (x2 - x1)

in our case:

slope = (1 - -2) / (2 - -1) = (1 + 2) / (2 + 1) = 3 / 3 = 1

Therefore, the slope is POSITIVE (answer A)

Help please do step by step if you can

Answers

Answer:

40

Step-by-step explanation:

Answer:

Answer is D: 40ft

Step-by-step explanation:

answer this please i`ll give brainliest

Answers

Answer:

40

Step-by-step explanation:

hudson plus his friends make 8

320/8=40

they each got 40 pennies

URGENT HELP WANTED FAST!!! DUD

Answers

Answer:

N

P

J

B

A

I

L

E

G

H

O

M

C

D

K

A

Step-by-step explanation:

simple addition subtraction,in terms of a alone then b them the number

whats the average between 95 and 128

Answers

Answer:

Below!

Step-by-step explanation:

111.5

The height of a football y in feet is given
by the function y=-16x² + 56x+ 2
where x is the time in seconds after the
ball was kicked. This function is
graphed below. How long was the
football in the air?

(Show work please if possible.)

Answers

Lol I don’t understand the question it’s not clear!

Members of a soccer team raised $1719 to go to a tournament. They rented a bus for
$1051.50 and budgeted $44.50 per player for meals. Write and solve an equation
which can be used to determine z, the number of players the team can bring to the
tournament.

Answers

Answer:

44.5x + 1051.5 = 1719

x = 15

Step-by-step explanation:

DeltaMath

The number of players the team can bring to the  tournament is 15.

Given:

The total amount of money raised by the soccer team = $1719

Amount to rent the bus = $1051.50

Amount budgeted for each player's meal = $44.50

To find:

Equation and the number of players the team can bring to the  tournament

Solution:

The number of players the team can bring to the  tournament = z

Amount budgeted for each player's meal = $44.50

Total amount needed for z number of players' meals =  $44.50z

Amount to rent the bus = $1051.50

The total amount of money raised by the soccer team = $1719

The equation for numbers of players will be written as:

[tex]\$44.50z+ \$1051.50= \$1719\\\$44.50z= \$1719- \$1051.50\\\$44.50z=\$667.50\\z=\frac{\$667.50}{\$44.50}=15[/tex]

The number of players the team can bring to the  tournament is 15.

Learn more about solving equations here:

https://brainly.com/question/12825068?referrer=searchResults

https://brainly.com/question/16199330?referrer=searchResults

Let f(x)=18/1+3^e-0.1x What is the point of maximum growth rate for the logistic function f(x)? Show all work. Round your answer to the nearest hundredth

Answers

Answer:

(0, 4.5)

Step-by-step explanation:

*The equation can be put into Desmos, to find the point, but the work to prove it is here*

f(x)=c/1+Ae^-Bx

Y=C

C=18      A=3      -B=-0.1

*Replace x with 0 in the equation, so you know 0 is the x value, and it leads you to the y value*

f(0)=18/1+3e^-o.1(0)

= 18/1+3e^0

=18/1+3(1)

=18/1+3

=18/4

=4.5

x=0    y=4.5

Maximum growth rate = (x,y) --> (0, 4.5)

Hope this helps:))!!

can somebody verify this for me?


5f + 3n + 2

use f = -4 and n=-7

answer is -43

is this correct? yes or no?

Answers

Answer:

no

Step-by-step explanation:

5(-4)+3(-7)+2= -20-21+2=-39

Please help I’ll give you the Brainlylist

Answers

Answer:

86

Step-by-step explanation:

Answer:

28/15

--

I hope it helps!

The graph of y = 4x2 - 4x – 1 is shown.
Use the graph to find estimates for
the solutions of
i) 4x2 - 4x – 1 = 0
ii) 4x2 - 4x - 1 = 2

Answers

Answer:

i) The approximate solutions are: [tex]x_{1} \approx -0.207[/tex], [tex]x_{2} \approx 1.207[/tex].

ii) The approximate solutions are: [tex]x_{1}\approx -0.5[/tex], [tex]x_{2} \approx 1.5[/tex].

Step-by-step explanation:

i) The best approach to estimate graphically the solution of [tex]4\cdot x^{2} - 4\cdot x - 1 = 0[/tex] is graphing the following system of equations:

[tex]y = 4\cdot x^{2}-4\cdot x - 1[/tex] (1)

[tex]y = 0[/tex] (2)

And labeling the points in which both intersects each other. We include the result in the image 'solution-i'. The approximate solutions are: [tex]x_{1} \approx -0.207[/tex], [tex]x_{2} \approx 1.207[/tex].

ii) The best approach to estimate graphically the solution of [tex]4\cdot x^{2} - 4\cdot x - 1 = 2[/tex] is graphing the following system of equations:

[tex]y = 4\cdot x^{2}-4\cdot x - 1[/tex] (1)

[tex]y = 2[/tex] (2)

And labeling the points in which both intersects each other. We include the result in the image 'solution-ii'. The approximate solutions are: [tex]x_{1}\approx -0.5[/tex], [tex]x_{2} \approx 1.5[/tex].

Find the measure of angle JML.

Answers

Answer:

110°

Step-by-step explanation:

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