Alice spent 36 minutes listening to 9 songs. If each song takes the same amount of time, how long would it take Alice to listen to 20 songs?

Answer:

Brainly User

The equation given is f(x) = x^2 - 12x + 27

Based on its form, it is a parabola. First, factor the quadratic equation:

f(x) = (x-9) (x-3)

Plot in the x-y plane, assign values of x and solve for the values of y. 

x       y

1       16

2      7

3      0

0      27

-1     40

-2    55     

-3    72

Answer:

The value of z is:

z = 6

Step-by-step explanation:

We have been given 4 options of z. Lets substitute each value in the given equation to see which option satisfies.

sin(9z - 1) = cos(6z + 1)

sin(9(3) - 1) = cos(6(3) + 1)

sin(26) = cos(19)

0.438 = 0.945

FALSE

sin(9z - 1) = cos(6z + 1)

sin(9(4) - 1) = cos(6(4) + 1)

sin(35) = cos(25)

0.574 = 0.965

FALSE

sin(9z - 1) = cos(6z + 1)

sin(9(5) - 1) = cos(6(5) + 1)

sin(44) = cos(31)

0.695 = 0.857

FALSE

sin(9z - 1) = cos(6z + 1)

sin(9(6) - 1) = cos(6(6) + 1)

sin(53) = cos(37)

0.799 = 0.799

TRUE

Answer:

z=6

Step-by-step explanation:

I took the test!

Answer:

D

Step-by-step explanation:

100%-45%=55%

$115*55%=$63.25

Answer:

the answer is D

Step-by-step explanation:

have a nice day!!

Answer:

Step-by-step explanation:

I pretty sure its A

hope it helps

-Delilah

Answer:

After 15 minutes, they will both have 95 gallons of water.

Step-by-step explanation:

Answer:

-11/3<x<4/3

Step-by-step explanation:

I attached the explanation:

Answer:

Option A. is the right choice.

Step-by-step explanation:

y-intercept is 0, and slope is negative.

[tex]\mathrm{Slope\:}\left(0,\:0\right),\:\left(3,\:-1\right):\\\\\quad m=\frac{-1-0}{3-0}=-\frac{1}{3}[/tex]

Best Regards!

Answer:

A. [tex] y= - \frac{1}{3} x[/tex]

Step-by-step explanation:

Line is passing through the point [tex] (3,\:-1)=(x_1, \:y_1) [/tex] and origin [tex] (0,\: 0)=(x_2, \: y_2) [/tex]

Equation of line in two point form is given as :

[tex] \frac {y-y_1}{y_1 - y_2} = \frac{x-x_1}{x_1 - x_2} \\\\

\therefore \frac{y-(-1)}{-1-0}= \frac{x-3}{3-0}\\\\

\therefore \frac{y+1}{-1}= \frac{x-3}{3} \\\\

\therefore 3(y+1) = - 1(x-3)\\\\

\therefore 3y + 3 = - x +3\\\\

\therefore 3y = - x +3-3\\\\

\therefore 3y = - x\\\\

\huge \orange {\boxed {\therefore y= - \frac{1}{3} x}} [/tex]

Answer:

1/2 a vial, or 0.5 a vial, or half a vial.

Step-by-step explanation:

A vial holds 2 millilitres. 1 millilitre is half of 2 millilitres.

You can fill 0.5 (or half) of a vial with 1 milliliter of pixie dust.

We have,

Dividing the amount of pixie dust (1 milliliter) by the capacity of each vial (2 milliliters) to determine how many vials can be filled.

Number of vials = Amount of pixie dust / Capacity of each vial

Number of vials = 1 milliliter / 2 milliliters

Number of vials = 0.5

Therefore,

You can fill 0.5 (or half) of a vial with 1 milliliter of pixie dust.

Learn more about expressions here:

https://brainly.com/question/3118662

#SPJ4

Answer:

a. $15 + 8p

b. $175

c. $975

d. $495

Step-by-step explanation:

*Im using $ instead of euros

The equation is $15 + 8p

b. you plug in 20 which would be 15 + 8(20), the answer for this would be 175

c. For this you would do the same thing 15 + 8(120), the answer would be 975

d. Since this is saying per week and there are 4 you would multiply 15 by 4 first and get 60 then you plug it in, 15 + 8(60) = 495

Answer:

x = 3

y = 1

Step-by-step explanation:

9x - y = 26  ---------------(I)

9x + y = 28 ---------------(II)

9x - y = 26

9x = 26 + y

Substitute 9x = 26 + y in equation (II)

26 + y + y = 28               {add like terms}

26 + 2y = 28             {subtract 26 from both sides}

         2y = 28 - 26

        2y = 2    {divide both sides by 2}

           y = 2/2

y = 1

Substitute y =1 in equation (I)

9x - 1 = 26

9x = 26 + 1

9x = 27

x = 27/9

x = 3

x = 3

y = 1

Answer:

Brainliest!!!

Step-by-step explanation:

See picture

Answer:

y = -2

x - 2y = 6   aka A

Step-by-step explanation:

got it right on edge2020

Answer:

It's A, I got it right

Step-by-step explanation:

Answer: do you have the answer chooses?

Step-by-step explanation:

Answer:

916.67

Step-by-step explanation:

1/2 of 500.00

1/2×500.00

=250.00

1/3 of 500.00

1/3×500.00

=166.67

then add them

250.00+166.67

=416.67

then take 500.00 add with 467.67

500.00+416.67

=916.67

Answer:

-11

Step-by-step explanation:

There is enough information to put the equation in point slope form.

[tex]y-y_1=m(x-x_1)[/tex]

We are given the point of (-5,4) and the slope of -3.

[tex]y-y_1=m(x-x_1)\rightarrow \boxed{y-4=-3(x+5)}[/tex]

Now, we can take the point slope equation and convert it into slope intercept form.

[tex]y-4=-3(x+5)\\\\\left \{ {{-3*x=-3x} \atop {-3*5=-15}} \right.\\\\ y-4=-3x-15\\\\y-4+4=-3x-15+4\\\\\boxed{y=-3x-11}[/tex]

The y-intercept should be -11.

Answer:

B

Step-by-step explanation:

Answer:

[tex]9x+5y=-20[/tex]

Step-by-step explanation:

[tex]y = \frac{5}{9} x - 4[/tex]

compare with that y=mx+c

where m=slope .

So after comparing we get m=[tex]\frac{5}{9}[/tex]

As the lines are perpendicular

[tex]m1*m2=\ -1[/tex]

[tex]m2 \ =\ \frac{-1}{m1}[/tex]

therefore m2=[tex]\frac{-9}{5}[/tex]

Now from the equation

[tex]y - b = m(x - a )[/tex] this equation passing to the point (-5,5) with m=[tex]\frac{-9}{5}[/tex]

[tex]y-5=\frac{-9}{5} (x+5)\\5y-25=-9x\ -45\\9x+5y=-20[/tex]

Therefore equation is

[tex]9x+5y=-20[/tex]

Answer:

Experimental Probability is found:

P = 11/24

Step-by-step explanation:

Experimental Probability can be defined as the ration of the number of times (frequency) a desirable event has occurred, to the Total number of time (total frequency) the activity has been performed.

Probability = P = Frequency of an event / Total Frequency

To find the total frequency, we add all three of the given frequencies:

Total Frequency = 10 + 11 + 3

Total Frequency = 24

Frequency of the event (times bus arrived between 8:20 to 8:24) = 11

So, experimental probabilty is found as:

P = 11/24

Answer:

48 degrees

Step-by-step explanation:

Angle 2 is a right angle.

Right angles are 90 degrees.

A line is 180 degrees.

Angle 1, 5, and 2 form a line.

180-90=90

That means that Angles 1 and 5 add up to 90 degrees.

We know that Angle 3 is 42 degrees.

Angle 3 and 5 are Vertical angles.

Vertical angles are always congruent.

This means that Angle 5 is also 42 degrees.

As we discussed earlier, Angles 1 and 5 are complementary. (Add up to 90 degrees)

42+x=90

Subtract 42 from both sides.

x=48

m<1=48

Answer:

It is 48 degrees because I took the test

Step-by-step explanation:

Answer:

(4,5)

Step-by-step explanation:

The x coordinate moves from 3 to 5 which is +2

The y coordinate moves from 2 to 3 which is +1

We move the point (2,4)

(2+2, 4+1) becomes (4,5)

Answer:

15 and three-fifths miles

Step-by-step explanation:

First you add all the miles he rides.

Mon+Tue+Wed+Thu+Fri=84.4miles

Then you do 100m-84.4m=15.6

Answer:

I believe 15 and 3/5 miles is your answer.

Answer: 72

Step-by-step explanation:

Total Score of 90 nos

90 x 60 = 5400

Total score of 60 nos

60 x 90 = 5400

Average of (90 + 60) = 10800 / 150 = 72

Answer:

72

Step-by-step explanation:

You need to find the average of all the number.  However, you are given two averages that have unequal numbers.  To solve, you need to multiply each average by the amount of number it has in it.

90 × 60 = 5400

60 × 90 = 5400

You need to find the total amount of number as well as the total value of the numbers.

90 + 60 = 150

5400 + 5400 = 10800

Divide the total value by the total amount of number to find the average.

10800/150 = 72

The total average is 72.

Answer:

these are corresponding angles because. They are on the same side of the transversal and measure the same.

Answer:

Step-by-step explanation:

Take a look at the first possible answer choice:  (-3x) + 3 + (-2x) + 1 simplifies to -3x - 2x + 3 + 1, or -5x + 4.

Its A. ☜ its right trust me  thats right

Answer:

40

Step-by-step explanation:

5*4*2

Answer:

40

Step-by-step explanation:

5*2*4

5 units from each point * 4 points * 2

Answer:

if he spent %10 more 400.110/100 he spent 440

he spent 40 more and his savings dropped %20 this means 40 is %20 of his total saving 40.5=200

Answer:

$200.

Step-by-step explanation:

Let his fixed monthly salary be x dollars.

Then he saved x-400 dollars in January.

He spent 10% more in February which is $440 so his savings were x-440 dollars, which is 0.20 less than in January. So we have the equation:

(x - 400)  - (x - 440) = 0.20(x - 400)

0.80(x - 400) =  x - 440

0.8x -  320 - x = -440

-0.20x = - 120

x = $600

So his saving in January were  600 - 400 = $200.

Answer:

Divide the 7.5 by 3 to see how much bigger the ratio has to be.

7.5 / 3 = 2.5 so the ratio is 2.5 times bigger

multiply 5 by 2.5 to make the ratio equal and find the answer

5 x 2.5 = 12.5

It was 12.5 long and became 7.5 long

hope this helps. If you have any questions you may ask.

Step-by-step explanation:

Answer:

1) x= 15

2) x= 34

3) x= 40

Step-by-step explanation:

1) 4x°= 45° +15° (vert. opp angles)

4x°= 60° (simplify)

x°= 60° ÷4 (÷4 on both sides)

x°= 15°

Thus, x= 15.

2) (x+12)° +100° +x°= 180° (adj. angles on a str. line)

2x° +12°= 180° -100°

2x°= 80° -12°

2x°= 68°

x°= 68° ÷2

x°= 34°

x= 34

3) 3x°= 120° (vert. opp. angles)

x°= 120° ÷3

x°= 40°

x= 40

Abbreviations:

1. vert. opp. angles

- vertically opposite angles

- This means that when 2 straight lines intersect, the angles facing opposite each other are equal.

2. adj. angles on a str. line

- adjacent angles on a straight line

- the sum of the angles that lie on a straight line is 180°

Answer:

B.   N(c)  = (c-20)/n  

Step-by-step explanation:

Given

C(n) = 10n+20

we have to find the inverse of this function

we have to express n in terms of C(n)

C(n) = 10n+20

we have make n independent of n and remove any other term containing on the side of n

subtracting 20 from LHS and RHS

C(n) - 20 = 10n+20 - 20

C(n) - 20 = 10n

dividing LHS and RHS by 10

C(n)/10 - 20/10 = 10n/10

=> n = (C(n) - 20)/10

Now given in problem, N(c) is no of bushels picked

and c is the cost of apple

so in function n = C(n) - 20/10

we replace C(n) with c

and n with  N(c)  

and then we have

N(c)  = (c-20)/n   Answer

Answer:

Yes it's D

Step-by-step explanation:

Multiply coordinates by 2. :P

Answer:

B)

Step-by-step explanation:

r= 3 units

[tex]Volume=\frac{4}{3}\pi r^{3}\\\\=\frac{4}{3}*\pi *3*3*3\\\\=4*\pi *3*3\\\\[/tex]

= 36π unit³

Answer:

Step-by-step explanation:

V = 4πr³/3

r = 3

V = 4·π·3·3²/3

= 4π·9

= 36π units³