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2 years ago

3 equivalent rations of 3 : 11

Mathematics

1 answer:

lara31 [8.8K]2 years ago

7 0

Answer:

9:33 (3:11 * 3 = 9:11)

12:44 (3:11 * 4 = 12:44)

15:55 (3:11 * 5 = 15:55)

Step-by-step explanation:

And so on and so forth,...

Chow,...!

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3 years ago

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3 years ago

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3 years ago

Pls solve the simultaneous equation in the attachment.

siniylev [52]

Answer:

Part a) The solution is the ordered pair (6,10)

Part b) The solutions are the ordered pairs (7,3) and (15,1.4)

Step-by-step explanation:

Part a) we have

$\frac{x}{2}-\frac{y}{5}=1$ ----> equation A

$y-\frac{x}{3}=8$ ----> equation B

Multiply equation A by 10 both sides to remove the fractions

$5x-2y=10$ ----> equation C

isolate the variable y in equation B

$y=\frac{x}{3}+8$ ----> equation D

we have the system of equations

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$y=\frac{x}{3}+8$ ----> equation D

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$15x-2x-48=30$

$15x-2x=48+30$

Combine like terms

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$y=\frac{6}{3}+8$

$y=10$

The solution is the ordered pair (6,10)

Part b) we have

$xy=21$ ---> equation A

$x+5y=22$ ----> equation B

isolate the variable x in the equation B

$x=22-5y$ ----> equation C

substitute equation C in equation A

$(22-5y)y=21$

solve for y

$22y-5y^2=21$

$5y^2-22y+21=0$

Solve the quadratic equation by graphing

The solutions are y=1.4, y=3

see the attached figure

Find the values of x

For y=1.4

$x=22-5(1.4)=15$

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3 years ago

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Virty [35]

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Step-by-step explanation:

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3 years ago

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