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Reptile [31]
3 years ago
10

Bella bought 3 bags of popcorn for $8.25 and 2 sodas for $4.40 at the movies last week. Last month, Bella was at the movies with

her friends and bought 3 bags of popcorn for $7.50 and 2 sodas for $3.80. What was the percent increase?
Mathematics
1 answer:
diamong [38]3 years ago
5 0

Answer:

bags of popcorn = 10%

sodas = 15.78%

overall increase was 12.5%

Step-by-step explanation:

We must calculate the unit price of each product, before and after.

Before:

bags of popcorn = 7.50 / 3 = 2.5

sodas = 3.80 / 2 = 1.9

Then:

bags of popcorn = 8.25 / 3 = 2.75

sodas = 4.40 / 2 = 2.2

Now, we calculate for each:

bags of popcorn = 2.75 / 2.5 = 1.1

which means that the increase was 10%

sodas = 2.2 / 1.9 = 1.1578

Which means that the increase was 15.78%

If we calculate the percentage of total increase it would be:

(2.75 + 2.2) / (2.5 + 1.9) = 1,125

Therefore the overall increase was 12.5%

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F(x,y)=8x+y

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let's calculate f for the vertices:

f(0,0)=8*0+0=0+0=0

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f(3, 5)=8*3+5=24+5=29

f(0, 5)=8*0+5=0+5=5

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3 years ago
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nadezda [96]
AB and BC form a right angle at their point of intersection. This means AB is perpendicular to BC.

We are given the coordinates of points A and B, using which we can find the equation of the line for AB.

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Using this slope and the point (2,1) we can write the equation for AB as:

y-1= \frac{-1}{6}(x-2) \\  \\ 
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The larger number is 10 and smaller number is 6.

Step-by-step explanation:

Given,

The difference between two numbers = 4

Let,

x be the larger number.

y be the smaller number.

According to given statement;

x-y=4     Eqn 1

3y=2x-2   Eqn 2

Multiplying Eqn 1 by 3

3(x-y=4)\\3x-3y=12\ \ \ Eqn\ 3

Putting value of 3y from Eqn 2 in Eqn 3

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Putting x = 10 in Eqn 2

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Dividing both sides by 3

\frac{3y}{3}=\frac{18}{3}\\y=6

The larger number is 10 and smaller number is 6.

Keywords: linear equation, substitution method

Learn more about substitution method at:

  • brainly.com/question/11149751
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#LearnwithBrainly

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Answer:

The were was a man his son and his grandson

Step-by-step explanation:


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