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1 year ago

For what value of x and y the ordered pairs (x+3,y-2) (y-1,2x-3)

Mathematics

2 answers:

Liono4ka [1.6K]1 year ago

8 0

Answer:

(7, 12)

I think that is what it is asking, not 100% sure though

Step-by-step explanation:

x+3 = y - 2

-3

x = y - 5

Now substitute

2(y - 5) -3 = y-1

2y - 13 = y - 1

- y -y

y -13 = -1

+13

y = 12

Substitute again

x = 12 - 5 = 7

sladkih [1.3K]1 year ago

8 0

u spammed in my question :(

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RoseWind [281]

we know that

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by using proportion

$\frac{\frac{1}{3}}{5} =\frac{x}{1} \\ \\ x=\frac{\frac{1}{3}}{5}\\ \\ x=\frac{1}{15}$

therefore

the answer Part a) is

To make one dinner roll is needed $\frac{1}{15}$ cup of flour

Part b) How many cups of flour are needed to make 3 dozen dinner rolls?

Multiply the value obtained in part a) by $36$

$\frac{1}{15} *36=\frac{36}{15} \\ \\ =\frac{12}{5}$

$\frac{12}{5} =2\frac{2}{5}$

therefore

the answer Part b) is

To make $3$ dozen dinner rolls are needed $2\frac{2}{5}$ cup of flour

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by using proportion

$\frac{\frac{1}{3}}{5} =\frac{\frac{17}{3}}{x} \\ \\ \frac{x}{3} =\frac{85}{3} \\ \\ x=85$

therefore

the answer part c) is

$85$ rolls

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Step-by-step explanation:

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For what value of x and y the ordered pairs (x+3,y-2) (y-1,2x-3)​

For what value of x and y the ordered pairs (x+3,y-2) (y-1,2x-3)