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KonstantinChe [14]
2 years ago
10

At the grocery store last week, small boxes of facial tissue were on sale at 4 boxes for $5. This week they mark a new price at

5 boxes for $4. What is the percent decrease in the price per box this week?
Mathematics
1 answer:
Anastaziya [24]2 years ago
7 0

Answer: 36%

Step-by-step explanation:

Since the price last week, was 4 boxes for $5. Therefore, the price per box will be:

= $5/4

= $1.25 per box

This week they mark a new price at 5 boxes for $4. The price per box will be:

= $4/5

= $0.8 per box

The percent decrease in the price per box this week will be:

= (1.25 - 0.80)/1.25 × 100

= 0.45/1.25 × 100

= 36%

The Percentage decrease is 36%

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Answer: the inequality that matches de graph is x ≤ 5.


Explanation:


1) The vertical line through the point (5,0) is represented by x = 5.


2) The area to the left of the vertical line x = 5 contents all the points whose x-coordinate is less than five.


Please, find attached the figure with the graph described in the question.


3) A solid line is used to indicate that the points on the line are included in the solution region (a dashed line is used to indicate that the points on the line are excluded)


Therefore, the graph includes the points on the line x = 5 and the points  with x-coordinate less than 5.


4) Hence, you have to use an inequality with the symbol ≤, which means less than or equal to.


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3 years ago
The school cafeteria sells three different types of sandwiches: chicken, turkey,
dusya [7]

Answer:

Number of chicken sandwiches = 150

Number of turkey sandwiches = 150

Number of roast beef sandwiches= 100

Step-by-step explanation:

We are told the school cafeteriat makes and sells 3 different types of sandwiches which are; chicken, turkey and roast beef.

Let chicken be x, turkey be y and roast beef be z.

We are told they make 400 sandwiches in total.

Thus;

x + y + z = 400

However, we are told that the cafeteria makes same number of chicken and turkey sandwiches.

Thus, x = y

Thus;

Total is now;

x + x + z = 400

2x + z = 400 - - - (eq 1)

Now,we are told that chicken, turkey and roast beef sandwiches are sold for $3, $3.5 and $4 respectively. Also that the total amount realized from sales is $1375.

Thus;

3x + 3.5y + 4z = 1375

Since x = y. Thus;

3x + 3.5x + 4z = 1375

6.5x + 4z = 1375 - - - (eq 2)

Let's make z the subject in eq 1.

Thus;

z = 400 - 2x - - - (eq 3)

Putting 400 - 2x for z in eq(2) gives us;

6.5x + 4(400 - 2x) = 1375

6.5x + 1600 - 8x = 1375

1600 - 1375 = 8x - 6.5x

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x = 150

Putting 150 for x in eq 3 gives;

z = 400 - 2(150)

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Since x = y. Then y = 150

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3 years ago
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riadik2000 [5.3K]

Answer:

C

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Then the +12 you did include in the original question indicates that the c-value is 12 not -12 eliminating answer A.

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Answer:

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