Mathematics College

You can buy 12 cookies for $4. What is the unit rate for the cost of each cookie?​

Answers

Answer 1

Answer:

$0.33 per cookie

Step-by-step explanation:

The unit rate (cost per cookie) is

     $4

---------------- = $0.33 per cookie

12 cookies

Answer 2

Answer:

Roughly $0.34

Step-by-step explanation:

Set up an equation:

Variable x = cost of one cookie

12cookies/$4 = 1cookie/x

12/4 = 1/x

Cross multiply

12 × x = 4 × 1

12x = 4

Divide both sides by 12

12x ÷ 12 = 4 ÷ 12

1x = 4/12

x = 0.333333

x = is about $0.34

Related Questions

Find the area of the figure shown below and chose the appropriate result

Answers

Answer:

it's the first option or A

Step-by-step explanation:

well 9 * 10 is 90 which leaves you with the numbers 14 and 3 we used 10 so that gives us 4 and 3 multiply those and you get 12 so add 12 to 90 and you get 102 thus the answer is A

How much 9% saline solution should be mixed with 80 Cc of a 17% saline solution to produce a 13% saline solution?

Answers

Answer:

80 cc.

Step-by-step explanation:

We work in amounts of salt in the solutions:

0.09x + 0.17*80= 0.13(x+ 80)  where x is the required volume of 9% solution.

0.09x + 13.6 = 0.13x + 10.4

13.6 - 10.4 = 0.13x - 0.09x

3.2 = 0.04x

x = 3.2 / 0.04

x = 80


A helicopter hovers 1500 feet above a small island. The
figure shows that the angle of depression from the
helicopter to point P is 40°.
How far off the coast, to the nearest foot, is the island?
400
1500ft
Please help me solve this problem

Answers

Answer:

the island is 1787.63ft far.

Step-by-step explanation:

<P=40° alternate angle

in triangle

relationship between perpendicular and base is given by tan angle

tan 40=p/b

tan40=1500/b

b=1500/tan40=1787.63ft

Which expression is equivalent to 4(5r+9)?

Answers

The answer would be 20r+36

What is the definition of an irrational number?

A.
a negative number

B.
a number that can be expressed as a fraction, , where p and q are integers and q is not equal to zero

C.
a number that cannot be expressed as a fraction, , where p and q are integers and q is not equal to zero

D.
a number that can be written as a fraction but not as a decimal

Answers

It should be D but if i’m wrong is for sure C

Anthony needs some kitchen
appliances He found a mixer
for $90 and a microwave for
$42 What is the total bill
after adding 8% sales tax?

Answers

$142.56 cuz you add the total which is 90+42=132
Then add 132 + 8% equals 142.56

Find the lateral surface area of the figure below. Round the the nearest tenths place.
help please !

Answers

Answer: lateral surface area = 119.4cm^2
r = 2 cm.
h = 9.5 cm.

Steps:
Lateral surface area of a cylinder = 2πrh
r = radius h = height π = pi

2π(2)(9.5)
2π(19)
38π = 119.38052

The ratio of tables to chairs at the furniture store is 1:6. There are 30 chairs. How many tables are there?

Answers

Answer:

5 : 30

Step-by-step explanation:

30/6 = 5

1 * 5 = 5

5 : 30

Hope it helps

Please mark me as the brainliest

Thank you

The answer is 5, pretty simple just divided 30 by 6 which equals 5

What is equivalent to 0 = 2x2 - 16x – 18 when completing the
square?

Answers

Answer:

x = 1

x = -9

Step-by-step explanation:

(2x2 +  16x) -  18  = 0

2x2 + 16x - 18  =   2 • (x2 + 8x - 9)

x2 + 8x - 9

 -9    +    1    =    -8

     -3    +    3    =    0

     -1    +    9    =    8

 2 • (x + 9) • (x - 1)  = 0

2   =  0

x+9 = 0  

x = -9

x-1 = 0

x = 1

x2 + 8x - 9  = 0

  x2+8x = 9

(x+4) • (x+4)  =

 (x+4)2

x2+8x+16 = 25 and

  x2+8x+16 = (x+4)2

(x+4)2 = 25

x = -4 + √ 25

 x2 + 8x - 9 = 0

has two solutions:

 x = -4 + √ 25

  or

 x = -4 - √ 25

           

           - B  ±  √ B2-4AC

 x =   ————————

                     2A

A   =     1

                     B   =    8

                     C   =   -9

B2  -  4AC   =

                    64 - (-36) =

                    100

 -8 ± √ 100

  x  =    —————

                   2

  x  =  ( -8 ± 10) / 2

x =(-8+√100)/2=-4+5= 1.000

or:

x =(-8-√100)/2=-4-5= -9.000

Answer:  x = 1

x = -9

Please answer quick just super small explanation pls hurry quick for brainlessly answerr

Answers

Answer:

A

Step-by-step explanation:

2x/√2

2x/√2 x √2/√2 = 2x√2/2

x√2

Can I please have help I will mark brainly est

Answers

Answer:

Hey mate......

Step-by-step explanation:

This is ur answer......

I believe its SQUARE! Cuz it says 4 right angles.....

Hope it helps!

mark me brainliest pls.....

Follow me! :)

Round the fraction to 0, 1/2, or 1.



2/9

Answers

It rounds to zero! lmk if you need anything else

A paint manufacturer wants to determine the average drying time of a new interior wall paint. For n = 50 test areas of equal size he obtained a sample mean drying time of ¯x = 63.3 minutes and a sample standard deviation of s = 8.4 minutes. (a) (5 points) Construct the 95% confidence interval for the true mean µ. (b) (5 points) Suppose the population has a normal distribution, construct the exactly 95% confidence interval for the true mean µ. (c) (5 points) Suppose the population has a normal distribution, construct the 95% prediction interval for a new observation.

Answers

Answer:

a) the 95% confidence interval for the true mean µ is 60.971, 65.629

The exact 95% confidence interval for the true mean µ is 60.971, 65.629

P (x`- ∝ s/√n<u <x`+ ∝ s/√n) = 0.95

Step-by-step explanation:

n= 50

x`= 63.3

s= 8.4 minutes

∝= 95%= ±1.96

The formula for calculating the confidence interval is:

x`± ∝ s/√n

Putting the values

x`± 1.96 s/√n

63.3 ± 1.96(8.4/√50)

63.3± 2.3287

60.971, 65.629

a) the 95% confidence interval for the true mean µ is 60.971, 65.629

b) Putting the values

x`± 1.96 s/√n

63.3 ± 1.96(8.4/√50)

63.3± 2.3287

The exact 95% confidence interval for the true mean µ is 60.971, 65.629

c) The prediction level tells that the drying time of the wall from 60.971 to 65.629 minutes must be in the range 95 % of the time.

And is given by

P (x`- ∝ s/√n<u <x`+ ∝ s/√n) = 0.95

Can someone help with this math problem please

Answers

Answer:

0.40p-20

Step-by-step explanation:

hope this helps.

Please no links, will report!

Answers

9514 1404 39318

Answer:

  XY = 11.25

Step-by-step explanation:

Corresponding sides are proportional, so ...

  XY/AB = XZ/AC

 XY = (AB)(XZ/AC) = 5(18/8)

  XY = 11.25

Evaluate-n, when n=-4

Answers

Answer:

4

Step-by-step explanation:

-n =

-(-4) =

+4 =

4

Hope that helps!

-Sabrina

Work out m and c for the line:
y = x + 3

Answers

Step-by-step explanation:

Given equation

y = x + 3

Comparing with y = mx + c so

Slope (m) = 1

y-intercept (c) = 3

Hope it will help :)❤

Answer:

I don’t know if this is right, but I hope this helps!

Step-by-step explanation:

Which point is on the graph of y = 4x + 2? A (-2, -5 o B. (-4, -15) C. (4. 18) D. (0.1)​

Answers

Answer:

The answer should be C

Step-by-step explanation:

I hope that helps you!

Which expressions represent the statement “three minus the product of seven and four”? Mark all that apply.
A 3 - (7 x 4)
B (7 x 4) - 3
C 3 - (4 / 7)
D 3 - (4 x 7)
E (7 x 4) - 3

Answers

The answer is A and D because as long as it is three minus you can still switch up the multiplication side

The statement three minus the product of seven and four is given by the expression 3 - (7 * 4)

What is an equation?

An equation is an expression used to show the relationship between two or more numbers and variables.

Given the statement three minus the product of seven and four, this is an expression:

3 - (7 * 4)

The statement three minus the product of seven and four is given by the expression 3 - (7 * 4)

Find out more on equation at: https://brainly.com/question/2972832

10 Mrs. Randall bought tickets to the art museum for all the fifth-grade students. Each ticket cost $12, and the total cost of the tickets was $1,152. How many fifth-grade students are there?​

Answers

Answer:

Step-by-step explanation:

12s=1152 (divide each side by 12 to isolate s)

s=96

So there were 96 students.

(Urgent) Worth 10 points 7.3

Answers

Answer:

m∡CBD = 135°

Step-by-step explanation:

m + 3m = 180

4m = 180

m = 180/4

m = 45

angle CBD is 3(45) = 135 degrees

WEEEEEEEEELLLLLLLLLLLL What is 1+1 :0 too confusion for my 1 braincell

Answers

Answer:

WELLLLLLLLLLLLLLLLLLLLLL it's 11 obviously. (or 2 ;P)

Step-by-step explanation:

i have 1/2 of a braincell :)

Answer:

1 + 1 is 2 BUT

2 + 2 is 5 ILLUMIATI CONFIRMED!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Step-by-step explanation:

PLEASE HELPPP!!! Use the image to help u out

Answers

Answer:

Nope

Step-by-step explanation:

Linear equation : Y = Mx + C

gradient = M

Y-intercept  = C

To find gradient : (y1 - y2) / (x1 - x2):

(20 - (-25)) / (-4 - 11)

45 / -15 = -3

The given gradient is however 1/3. So The given equation is wrong

HELpPppPppPppPpppPppPppppppppppppppppppoopppppoppopppppppppp
Jdjxjjxx

Answers

Answer:

£140

Step-by-step explanation:

First count up the amount of full squares, then you see the partially filled squares and try find the match for it to fill the square. It ends up being 24 squares, meaning 24 square feet. That multiplied by £5, as that is the cost of red wood, gives you the answer of £140

y=3/2x-9
I need to find the x-intercept and the y-intercept with work plsss

Answers

Hi there!

x-int: (6, 0)

y-int: (0, -9)

y = 3/2x - 9

Begin by finding the x-intercept. The x-intercept is located where y = 0, therefore:

0 = 3/2x - 9

Isolate for x by adding 9 to both sides:

9 = 3/2x

Divide both sides by 3/2x:

9 * 2/3 = x

x = 6. Thus, the x-intercept is at (6, 0).

Find the y-intercept by finding the y-value at which x = 0:

y = 3/2(0) - 9

y = -9. The y-intercept is at (0, -9).

Which is the sum of and 3/10 and 1/3​

Answers

Step-by-step explanation:

sum=addition

3/10 +1/3

find the LCM of 10 and 3 Which is 30

9+10/30=19/30

I hope it helps ☺️

The amount that Jimmy paid for his meals the four days, $6.45, $21.38, $1.99, $7.99, $16, $0, $7.99, $18.95, $4.30, $10.35, $18.20. Calculate the median

Answers

Answer:

$7.99

Step-by-step explanation:

Arrange numbers in numerical order: $0, $1.99, $4.30, $6.45, $7.99, $7.99, $10.35, $16, $18.20, $18.95, $21.38.

Count how many numbers you have, 11.

11 is an odd number so, the number in the middle of the data set is the median.

Final answer: $7.99 is the median.

A coin is tossed 100 times. WHich portion would you use to find how many times you'd expect the coin to land on heads?

Answers

Answer:

i would use 1/2 because theres 2 sides on a coin and if you flip it 100 times then the probability of it landing on heads is about 50 out of 100

Step-by-step explanation:

1/2 because there are two sides

Can someone please just help me with 1-3 I’ll mark brainliest it’s urgent?

Answers

1. 2 to 356 2:365 2/365
2. 363 to 365 363:365 363/365
3. 363 to 2 363:2 363/2

Answer:

In the instruction above, it gives us some helpful information.

2 days with no professional sports game.

3 forms of ratio --> a to b, a : b, a / b

1) Remember there are 365 days in a year.

Days without games to Days in a year --> 2 to 365

Days without games : Days in a year --> 2 : 365

Days without games / Days in a year --> 2 / 365

2) Now there is a plot twist. It ask days with games. To find that we need to subtract 365 - 2 = 363 days with games.

Days with games to Days in a year --> 363 to 365

Days with games : Days in a year --> 363 : 365

Days with games / Days in a year --> 363 / 365

3) Days with games to Days without games --> 363 to 2

Days with games : Days without games --> 363 : 2

Days with games / Days without games --> 363 / 2

Hope this helps and sorry for not answering you. For some reason I was not getting any notification, but it is fixed now. Thank you :) !!

NEEDED ASAP PLZ!!!!!!!!!

The social studies teacher wants to know whether the students in the entire school prefer a model United Nations activity or a student government activity. The teacher draws a random sample from the following groups:

All teachers in the school
All boys in each grade
All students in each grade
All students in the social studies club
Which group best represents the population he should take a random sample from to get the best results for his survey? (5 points)

Group of answer choices

All teachers in the school

All boys in each grade

All students in each grade

All students in the social studies club

Answers

Answer:

All students in each grade

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