3 years ago

Solve the following systems of 3-variable linear equations.

Mathematics

1 answer:

Dima020 [189]3 years ago

3 0

Answer:

Step-by-step explanation:

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11x + 2y = 68 & 5x + y = 13

matrenka [14]

Answer:

i hope its correct

Step-by-step explanation:

11x + 2y=68 ------------1

5x+y=13 ------------2

y= 13-5x. ------------3

put 3 into 1

11x +2(13-5x) =68

11x +26 -10x =68

x=42

put x =42 into 2

5(42) +y =13

210+y=13

y=13-210

y=197

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3 years ago

Y varies directly to some quantities and varies inversely to some other<br> quantities

yulyashka [42]

Answer:

I don't understand your question

Step-by-step explanation:

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2 years ago

Which values from the set{5,7,9,11,13} make the inequality w-4<8 true?

Rasek [7]

Answer:

5, 7, 9, 11

Step-by-step explanation:

Solve the inequality

w - 4 < 8 ( add 4 to both sides )

w < 12

w ∈ { 5, 7, 9, 11 }

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2 years ago

Solve for b. ab+c=d. 1.b=a+c/d 2.b=a/(c-d) 3.b=(d-c)/a

amm1812

Answer:3

Step-by-step explanation:

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2 years ago

What is the length of side a?

Bad White [126]

$\huge \bf༆ Answer ༄$

According to given figure, The Triangle BDC is a right angled Triangle (Angle D = 90°)

So, we can apply Pythagoras theorem to find the Side a (Hypotenuse)

Now, let's solve ~

$\sf \: BD {}^{2} + CD {}^{2} = BC {}^{2}$

$\sf4 {}^{2} + {3}^{2} = {a}^{2}$

$\sf16 + 9 = {a}^{2}$

$\sf \: a {}^{2} = 25$

$\sf \: a = \sqrt{25}$

$\sf \: a = 5 \: units$

Therefore, Length of side a is 5 units ~

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2 years ago

Solve the following systems of 3-variable linear equations.​

Solve the following systems of 3-variable linear equations.