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dalvyx [7]
3 years ago
12

you and 3 friends pay $26.55 for a pizza and 4 of the same kind of drinks. the pizza costs $18.75. write and solve an equation t

o find the cost of one drink
Mathematics
2 answers:
Digiron [165]3 years ago
8 0
The answer is $2.45. Do you need an explanation?
Gnom [1K]3 years ago
4 0
26.55-18.75=$7.80 they spent in drinks. $7.80/4 =$1.95. It was $1.95 is how much a drink cost.
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Step-by-step explanation:

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Equation -1-7v+3= how do i slove this i dont know
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a chef is going to use a mixture of two brands of Italian dressing. The first brand contains 5% vinegar and the second Brian con
tankabanditka [31]

Answer:

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  • 117 mL of 15%

Step-by-step explanation:

Let q represent the quantity of 15% dressing used. Then the amount of 5% dressing is (390 -q). The amount of vinegar in the mix is ...

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The chef should use 273 mL of the first brand (5% vinegar) and 117 mL of the second brand (15% vinegar).

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<em>Additional comment</em>

You may have noticed that the value of q is (0.08 -0.05)/(0.10 -0.05)×390. The fraction of the mix that is the highest contributor is the ratio of the difference between the mix value and least contributor, divided by the difference between the contributors: (8-5)/(15-5) = 3/10, the fraction that is 15% vinegar. This is the generic solution to mixture problems.

7 0
3 years ago
The main cable of a suspension bridge forms a parabola, described by the equation y = a(x - h)2 + k, where y is the height in fe
nirvana33 [79]
Refer to the diagram shown below.

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Also, because the distance between the supports is 90 ft, therefore
y(0) = 6 ft, and y(90) = 6 ft
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a(-h)² + k = 6                 (2)
a(90 - h)² + k = 6          (3)

From (2) and (3), obtain
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h = 45 ft.

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Therefore
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a = - 0.005
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Answer:
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y = - 0.005(x - 45)² + 16.125 

A graph of the solution verifies that the solution is correct.

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