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Sunny_sXe [5.5K]
2 years ago
8

How much will it cost for him to buy 3 dozen using the rate $12.00 for 20 cookies?

Mathematics
1 answer:
Art [367]2 years ago
4 0
3 dozen = 36 cookies

20/12 = 1.666666666666667

1.666666666666667 = 1 cookie

(x36)

36 x 1.666666666666667 = 60

It will cost him $60 for 3 dozen cookies
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The ratio of students to teachers at a school is 19 to 1 how many students are there in each total number of people
vladimir2022 [97]

<u>Question</u>:

The ratio of students to teachers at a school is 19 : 1. How many students are there in each total number of people?

A: 100 people

b. 280 people

c.440 people

d.760 people

<u>Answer</u>:

A )95 students  and 5 teachers

B)266 students  and 14 teachers

C)418 students  and 22 teachers

D)722 students  and 38 teachers

<u>Step-by-step explanation:</u>

<u><em>A: 100 people</em></u>

Ratio  =  19  :  1

The sum of the ratio is 19 + 1 = 20

Scale factor  = \frac{100}{20}

scale factor  = 5

The number students is 19 \times 5 = 95

The number of teachers is 1 \times 5 = 5

<em><u>b. 280 people </u></em>

Ratio  =  19  :  1

The sum of the ratio is 19 + 1 = 20

Scale factor  = \frac{280}{20}

scale factor  = 14

The number students is 19 \times 14 = 266

The number of teachers is 1 \times 14 =  14

<em><u>c.440 people</u></em>

Ratio  =  19  :  1

The sum of the ratio is 19 + 1 = 20

Scale factor  = \frac{440}{20}

scale factor  = 22

The number students is 19 \times 22 = 418

The number of teachers is 1 \times 22 =  22

<em><u>d.760 people</u></em>

Ratio  =  19  :  1

The sum of the ratio is 19 + 1 = 20

Scale factor  = \frac{760}{20}

scale factor  = 38

The number students is 19 \times 38 = 722

The number of teachers is 1 \times 38 =  38

5 0
3 years ago
Misha used 1/4 of a carton of 12 eggs to make on omelet. How many eggs she use?explain
DENIUS [597]
By multiplication, 12*(1/4) = 3
by division, 12/4 = 3
in words, a quarter of 12 is 3
4 0
3 years ago
Read 2 more answers
Martin is taking a test at school. His teacher gave him 1 hour and 15 minutes to complete the test. He has been taking the test
Rainbow [258]
He has 21 minutes left
4 0
3 years ago
Read 2 more answers
Pentagons STUVW and XYZAB are similar with XY=32, YZ=36, ST= 4c + 2 and TU= 5c + 2, find the length of ST
MakcuM [25]

Answer:

ST = 4

Step-by-step explanation:

If the pentagons are similar, the ratio between a pair of sides of one pentagon is the same ratio for the similar pair of sides of the second pentagon, so we have that:

XY / YZ = ST / TU

32 / 36 = (4c + 2) / (5c + 2)

8 / 9 = (4c + 2) / (5c + 2)

8*(5c + 2) = 9*(4c + 2)

40c + 16 = 36c + 18

4c = 2

c = 0.5

So the length of ST is:

ST = 4c + 2 = 4*0.5 + 2 = 4

7 0
3 years ago
Can someone help me with the median....
Naddik [55]

Answer:

6

Step-by-step explanation:

its 6 because half way between 5 and 7 is 6

7 0
3 years ago
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