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sashaice [31]
3 years ago
11

The cost, c, of a ham sandwich at a deli varies directly with the number of sandwiches, n. If c = $54 when n is 9, what is the c

ost of the sandwiches when n is 3?
A.$18
B.$21
C.$27
D.$48
Mathematics
2 answers:
mel-nik [20]3 years ago
7 0

Answer:

Option A is correct that is $18

Step-by-step explanation:

We have been given an information that is

c=$54 when n =9

when 9 gives 54

Then 1 gives  54/9

cost for one sandwich that is when n=1  then c=\frac{54}{9}=6

We need to find the cost for 3 sandwiches that is when n =3 then

when cost for one sandwich is 54/9 then cost for 3 sandwiches is 3\cdot \frac{54}{9}=18

Therefore, Option A is correct tha is $18.



lutik1710 [3]3 years ago
3 0
For 3 sandwiches: <span>3×$6=$<span>18</span></span>
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Sonji and her friend rachel are competing in a race. When sonji is 0.4 miles from the finish line she notices that her friend ra
goldfiish [28.3K]

Answer:

Sonji is 0.5 miles far from the finish line

Step-by-step explanation:

Data provided in the question:

Distance between the Sonji and the finish line = 0.4 miles

Distance run by Sonji back = one tenth of a mile

i.e = \frac{1}{10} miles = 0.1 miles

Hence,

The total distance of Sonji from the finish line will be

= Distance between the Sonji and the finish line + Distance run by Sonji back

= 0.4 miles + 0.1 miles

= 0.5 miles

Hence,

Sonji is 0.5 miles far from the finish line

5 0
3 years ago
1. (10pts] Let A = {1, 2, 3, 4, 5}, let B = {1,4,5,7,8,9}, and let C = {2, 4, 6, 7,9}. Determine each of the following (a) An Bn
alisha [4.7K]

Answer and explanation:

Given : Let A = {1, 2, 3, 4, 5}, let B = {1,4,5,7,8,9}, and let C = {2, 4, 6, 7,9}.

To find : Determine each of the following,

a) (A\cap B)\cap C

b) (A\cup B)\cap (A\cup C)

c) A - (B\cup C)

d) (A-C) (C-A)

Solution :

The union of two sets is a new set that contains all of the elements that are in at least one of the two sets.

The intersection of two sets is a new set that contains all of the elements that are in both sets.

a) (A\cap B)\cap C

A\cap B=\{1,4,5\}

Then, (A\cap B)\cap C=\{4\}

b) (A\cup B)\cap (A\cup C)

A\cup B=\{1,2,3,4,5,7,8,9\}

A\cup C=\{1,2,3,4,5,7,9\}

(A\cup B)\cap (A\cup C)=\{1,2,3,4,5,7,9\}

c) A - (B\cup C)

B\cup C=\{1,2,4,5,6,7,8,9\}

A - (B\cup C)=\{3\}

d) (A-C) (C-A)

A-C=\{1,3,5\}

C-A=\{6,7,9\}

(A-C) (C-A)=\{1,3,5\}\times\{6,7,9\}

(A-C) (C-A)=\{(1,6),(1,7),(1,9),(3,6),(3,7),(3,9),(5,6),(5,7),(5,9)\}

5 0
3 years ago
Solve the equation: only write the number is the box <br> 2( 5x+2)=54
aivan3 [116]
Answer: x = 5

Explanation:

2(5x + 2) = 54
10x + 4 = 54
10x = 54 - 4
10x = 50
x = 50/10
x = 5

Therefore, x = 5
4 0
3 years ago
I need help solving the problem
Semenov [28]

Answer:

Step-by-step explanation:

6 0
3 years ago
PLEASE HELP ASAP IF YOU DONT IDK WHAT WILL HAPPEN!!!
Nonamiya [84]

Step-by-step explanation:

okay relax dw it's all good

1. B : just count one whole pizza and the addition three out of 8

2. B addition question : 2+13+1+4+2 break it up

2+13=15+1=16+4=20+2=22

3. multiply 9 and 5. do the grouping thing if you need help

4. possible combinations can be done by drawing a big tree graph. I have attached an example above in image. count along each branch. there are 8 combinations.

5. this is called a 90° angle

4 0
3 years ago
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