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babymother [125]

4 years ago

9

It costs $20 per hour to play pool and $3 for a cue stick rental. Write a verbal model and an algebraic expression to represent

the cost for n hours of playing pool and identify the units for the expression.

1 answer:

Scilla [17]4 years ago

3 0

Y=3+20x. X=Hours To Play Pool

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notsponge [240]

Answer:

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Step-by-step explanation:

6 0

3 years ago

The price of 10 citrons and 7 fragrant wood apples is 55 units. The price of 7 citrons and 10 fragrant wood apples is 64 units.

a_sh-v [17]

Price of one citron = 5 units

Price of one fragrant = 5/7 units = 0.71 units

Further explanation:

Let x be the price of one citron and

y be the price of one fragrant

Then according to given statement

10x+7y = 55 Eqn 1

7x+10y = 64 Eqn 2

Multiplying equation 1 by 7

$7(10x+7y) = 7(55)\\70x+49y=385$

This will be equation 3.

Multiplying equation 2 by 10

$10(7x+10y) = 10(64)\\70x+100y=640$

This will be equation 4.

Subtracting equation 3 from equation 4

$70x+100y - (70x+49y) = 640-385\\70x+100y-70y-49y = 255\\51y = 255\\\frac{51x}{51} = \frac{255}{51}\\x = 5\\Putting\ x=5\ in\ equation\ 1\\10(5)+7y = 55\\50+7y = 55\\7y = 55-50\\7y = 5\\\frac{7y}{7} =\frac{5}{7}$

So,

Price of one citron = 5 units

Price of one fragrant = 5/7 units = 0.71 units

Keywords: Linear Equations, Solving system of linear equations

Learn more about linear equations at:

#LearnwithBrainly

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3 years ago

Rectangle ABCD is graphed in the coordinate plane. The following are the vertices of the rectangle: A(0, 6) B(4,6) C(4,2) D(0,2)

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Answer:

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Step-by-step explanation:

215=35x+40

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3 years ago

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