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Colt1911 [192]
2 years ago
13

Item 3 Write and solve an equation to answer the question. You order two servings of pancakes and a fruit cup. The cost of the f

ruit cup is $1.50. You leave a 15% tip. Your total bill is $11.50. What is the cost pp of one serving of pancakes? I know the answer i just need the equation please...
Mathematics
1 answer:
ivolga24 [154]2 years ago
5 0
2p + 1.50 + (1.50•15%) = 11.50
The 2p represents the two servings of pancakes.
The + 1.50 represents the cost of the fruit cup.
And the + (1.50•15%) is the tip price.
Then obviously the total.
***The (•) dot marking means multiplication. Just to make sure that you understand.
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Answer: 15.3 miles

Step-by-step explanation:

From the question, we are informed that Martin would like to start training to run a marathon and that first week he runs a total of 15 miles.

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2 years ago
What is the solution to the system of equations y=-1/3x+9 and y=2/3x+12
amm1812

Answer:

{x = -3 , y = 10

Step-by-step explanation:

Solve the following system:

{y = 9 - x/3 | (equation 1)

{y = (2 x)/3 + 12 | (equation 2)

Express the system in standard form:

{x/3 + y = 9 | (equation 1)

{-(2 x)/3 + y = 12 | (equation 2)

Swap equation 1 with equation 2:

{-(2 x)/3 + y = 12 | (equation 1)

{x/3 + y = 9 | (equation 2)

Add 1/2 × (equation 1) to equation 2:

{-(2 x)/3 + y = 12 | (equation 1)

{0 x+(3 y)/2 = 15 | (equation 2)

Multiply equation 1 by 3:

{-(2 x) + 3 y = 36 | (equation 1)

{0 x+(3 y)/2 = 15 | (equation 2)

Multiply equation 2 by 2/3:

{-(2 x) + 3 y = 36 | (equation 1)

{0 x+y = 10 | (equation 2)

Subtract 3 × (equation 2) from equation 1:

{-(2 x)+0 y = 6 | (equation 1)

{0 x+y = 10 | (equation 2)

Divide equation 1 by -2:

{x+0 y = -3 | (equation 1)

{0 x+y = 10 | (equation 2)

Collect results:

Answer:  {x = -3 , y = 10

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