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larisa86 [58]
2 years ago
15

Carl bought 6 hot dogs and 5 drinks and paid $25.10 Susan purchased 6 hot dogs and 3 drinks and was charged $20.10 what is the c

ost of 1 hot dog in the cost of 1 drink?
Mathematics
1 answer:
svetlana [45]2 years ago
5 0

Answer:

Let x = the unknown cost of a single hot dog and y = the unknown cost of a single soft drink. We have two unknowns so we need two equations to find them.

Equation 1 - 10 hot dogs and 5 soft drinks cost $35; that is 10x + 5y = 35

Equation 2 - 7 hot dogs and 4 soft drinks cost $25.25; that is 7x + 4y = 25.25

First let's re-write equation 1 to solve for y:

10x + 5y = 35

5y = 35 - 10x (subtract 10x from both sides)

y = 7 - 2x (divide both sides by 5)

Next, let's substitute 7 - 2x for y in equation 2:

7x + 4y = 25.25

7x + 4(7-2x) = 25.25

7x + 28 - 8x = 25.25

-x + 28 = 25.25

x - 28 = -25.25

Solve for x, the cost of a single hot dog. Once you have that, use y = 7 - 2x to find the cost of a single soft drink.

Step-by-step explanation:

Hope it helpful

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Step-by-step explanation:

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3 years ago
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A committee of 4 people is randomly selected from a group of 5 Republicans and 6 Democrats. What is the probability that the com
IgorLugansk [536]
We have 5 Republican Candidates and 6 Democratic Candidates

We have a total 11 candidates to choose from

First pick of Democratic Candidates = 6/11
Second pick of Democratic Candidates = 5/10
Third pick of Democratic Candidates = 4/9
Fourth pick of Democratic Candidates = 3/8

The probability of four Democratic candidates in the committee is
\frac{6}{11}×\frac{5}{10}×\frac{4}{9}×\frac{3}{8} = \frac{360}{7920} = \frac{1}{22}


4 0
3 years ago
Solve the system of equations. Type in all points of intersection for the two functions and round to the nearest tenth if necess
Veseljchak [2.6K]

The points of intersection for the two functions and round to the nearest tenth are (0.5, 1.4) and (4.85, -0.3)

<h3>System of equations</h3>

Given the following function

f(x) = - 0.5x + 2

g(x) = x^3 - 5x^2 + 3

The point of intersection is the point where f(x) = g(x)

x^3 - 5x^2 + 3 = - 0.5x + 2

x^3 - 5x^2 + 3 + 0.5x - 2 = 0

x^3 - 5x^2 + 0.5x + 1 = 0

Factorize and determine the value of x

x = 0.53 and 4.85

If x = 0.53

f(0.53) = -0.5(0.53) + 2

f(0.53) = -0.265 + 2

f(0.53) = 1.375

If x = 4.85

f(4.85) = -0.5(4.85) + 2

f(4.85) = -2.425 + 2

f(4.85) = -0.245

Hence the points of intersection for the two functions and round to the nearest tenth are (0.5, 1.4) and (4.85, -0.3)

Learn more on functions here: brainly.com/question/10439235

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3 0
2 years ago
Solve 2(4x-3) = 5(2x-5)
Anna71 [15]

Answer:

x = 19/2 or 9.5

Step-by-step explanation:

Hello!

We can distribute the parenthesis and solve.

<h3>Solve</h3>
  • 2(4x - 3) = 5(2x - 5)
  • 2(4x) - 2(3) = 5(2x) - 5(5)
  • 8x - 6 = 10x - 25

Move all x terms to one side and integer terms to the other

  • 8x - 6 = 10x - 25
  • -6 + 25 = 10x - 8x
  • 19 = 2x
  • x = 19/2
  • x = 9.5

5 0
2 years ago
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