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3 years ago

Cookies are sold singly or in packages of 3 or 9. With this packaging, how many ways can you buy 18 cookies?

Mathematics

1 answer:

8_murik_8 [283]3 years ago

4 0

3 : 3 times 6 is 18, 2 times 9 is 18 and 3 times 3 is 9 plus 9 is 18

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If 75 people attend a concert and tickets for adults cost $2.75 while tickets for children cost $2.25 and

Serhud [2]

Answer:

Adult = 39

Children = 36

Step-by-step explanation:

The total number of people = 75

Cost of adult ticket = $2.75

Cost of children ticket = $2.25

Total receipts = $188.25

Let the number of adult = x

Let the number of children = y

X + y = 75 ......equation (i)

(X × 2.75) + (y × 2.25) = 188.25

2.75x + 2.25y = 188.25.......equation (ii)

To find the numbe of adult and children that attended, we'll have to solve equation (i) and (ii) simultaneously.

From equation 1,

X + y = 75

X = 75 - y......equation(iii)

Put equation (iii) into equation (ii)

2.75*(75 - y) + 2.25y = 188.25

206.25 - 2.75y + 2.25y = 188.25

206.25 - 0.5y = 188.25

Collect liketerms

0.5y = 206.25 - 188.25

0.5y = 18

Y = 18 / 0.5

Y = 36

Put y = 36 into equation (i)

X + 36 = 75

X = 39

Therefore the number of adult is 39 while that of children is 36.

4 0

4 years ago

Divide: <br> -20.48<br> -----------<br> -4

marysya [2.9K]

If the question was -20.48 divided by -4 then the answer is 5.12

3 0

4 years ago

The Tire on franks bike moves 75 inches in one rotation. How many rotations will the tire have made after frank rides 50 feet

kifflom [539]

8 rotations. first must convert 50 ft into inches. 50x12=600 in. If you know the distance and the length of rotation, divide the length (600) by the length of each rotation (75) and you get 8

7 0

4 years ago

Read 2 more answers

Please i need help with this

masha68 [24]

Answer:

1.) Smith

2.) Johnson

4 0

3 years ago

Read 2 more answers

Jimmy is trying to escape Jane.... He runs 12 km/hr for 5 minutes, 17 km/hr for 8 minutes, and finally 6 km/hr for 2 minutes. Wh

Nana76 [90]

we are given

Jimmy is trying to escape Jane

For finding total distance , we will find distances and then add them

He runs 12 km/hr for 5 minutes

First distance:

speed =12 kh/hr

time=5 minutes

we can change into hour

$t=\frac{5}{60}hr$

$d_1=s*t$

now, we can plug values

$d_1=12*\frac{5}{60}$

$d_1=1$

second distance:

speed =17 kh/hr

time=8 minutes

we can change into hour

$t=\frac{8}{60}hr$

$d_2=s*t$

now, we can plug values

$d_2=17*\frac{8}{60}$

$d_2=2.26667$

third distance:

speed =6 kh/hr

time=2 minutes

we can change into hour

$t=\frac{2}{60}hr$

$d_2=s*t$

now, we can plug values

$d_3=6*\frac{2}{60}$

$d_3=0.2$

now, we can find total distance

$d=d_1+d_2+d_3$

$d=1+2.26667+0.2$

$d=3.46667$

so,

total distance is 3.46667 km...........Answer

7 0

3 years ago

Cookies are sold singly or in packages of 3 or 9. With this​ packaging, how many ways can you buy 18 cookies?

Cookies are sold singly or in packages of 3 or 9. With this packaging, how many ways can you buy 18 cookies?