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2 years ago

Solve this system of linear equations. Separate

Mathematics

1 answer:

dmitriy555 [2]2 years ago

8 0

Answer: x= -2 and y=7

Step-by-step explanation:

4×20x+11y=37

20×4x+3y=13

Using elimination method

80x+44y=148

80x+60y=260

-16y/-16=-112/-16

Y=7

Substitute for Y in equation (1)

20x+ 11(7)=37

20x+77=37

20x=37-77

20x/20= -40/20

X= -2

therefore, x=-2 and y=7

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Write an appropriate direct variation equation if y = 18 when x = 2

Sergeu [11.5K]

Answer:

$y=9x$

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a direct variation if it can be expressed in the form $k=\frac{y}{x}$ or $y=kx$

In this problem we have

y=18 when x=2

Find the value of the constant of proportionality k

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therefore

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3 years ago

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allsm [11]

Answer:

$3 \sqrt{5}$

Step-by-step explanation:

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The explanation is given in the picture

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2 years ago

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iogann1982 [59]

Answer:

D1×D2/2sq

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2 years ago

Write another way to describe 43

Leno4ka [110]

43
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= 4 tens+ 3 ones.

Another way to describe 43 is 4 tens and 3 ones~

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3 years ago

Read 2 more answers

What is the possible value of x in the equality x<3

algol13

Any value that is less than 3 but not equal to 3

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3 years ago