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3 years ago

Solving a System of Linear Equations - Applications - Item 92238

Mathematics

1 answer:

Viktor [21]3 years ago

7 0

Answer:

$132

Step-by-step explanation:

1) In this system of eqn x represents the price of washing cars and y represents the price of washing SUVs

2) From the given eqn,

y = (84 - 4x)/2

and

y = (126 - 3x)/5

equating both the equation,

(84 - 4x)/2 = (126 - 3x)/5

=> 210 - 10x = 126 - 3x

=> 7x = 84

=> x = 12

=> y = (84 - 48)/2 = 18

Hence the co-ordinate of intersection will be (12,18)

3) The total cost of 1 car and 1 suv = x + y = 12 + 18 = $ 30

4) The total earning of hour 3

= 5x + 4y

= 5.12 + 4.18

= 60 + 72

= $ 132

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Snowcat [4.5K]

Answer:

p = 2.7x - 20

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Step-by-step explanation:

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$p=90\% f\left( x\right) -20$

means

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means

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$p=2.7x -20$

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2 years ago

Write the standard equation of the circle with the given Center and radius:

Kipish [7]

9514 1404 393

Answer:

B. (x +4)² +(y +5)² = 64

Step-by-step explanation:

The equation for a circle with center (h, k) and radius r is ...

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Filling in your given values, you have ...

(x -(-4))² +(y -(-5))² = 8²

Simplifying, you get ...

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Additional comment

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2 years ago

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Step-by-step explanation:

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2 years ago

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jenyasd209 [6]

Answer:

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Step-by-step explanation:

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Therefore, the value of x is 11.

You can double-check using the sine ratio:

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Insert the values:

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Insert the equation into a calculator:

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3 years ago

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3 years ago