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Nostrana [21]
3 years ago
11

What is the value of the equation 3x-4y=65 when y=4

Mathematics
2 answers:
Inga [223]3 years ago
8 0
4x4=16. So think of it like this now..
3x-16=65

Add 16 in each side and you get 3x=81. Divide 3 with 81 and should be 27, or x=27.
Then you check it by putting in the #'s

3(27)-4(4)=65
81-16=65
65=65 ✔️
Serhud [2]3 years ago
4 0

Answer:

i personally think x=27 is the best choice for this one

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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5 0
2 years ago
Amelia is using substitution to determine if 8 is a solution to the equation. Complete the statements. 6a = 42 for a = 8 First,
Tju [1.3M]

Amelia must substitute 8 for the variable using parentheses. To simplify, Amelia must multiply 8 by 6. 8 is not a solution of the equation.

<h3>What is algebraic expression?</h3>

Algebraic expression are the expression which consist the variables, coefficients of variables and constants.

The algebraic expression are used represent the general problem in the mathematical way to solve them.

Amelia is using substitution to determine if 8 is a solution to the equation.  The equation which is Amelia is solving  for a = 8 is,

6a = 42

First, Amelia must substitute 8 for the variable using parentheses as,

6(8) = 42

To simplify, Amelia must. multiply 8 by 6.

48 \neq 42

The left hand side of the eqqation is not equal to the right hand side. Thus, 8 is not a solution of the equation.

Thus, Amelia must substitute 8 for the variable using parentheses. To simplify, Amelia must multiply 8 by 6. 8 is not a solution of the equation.

Learn more about the algebraic expression here;

brainly.com/question/2164351

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2 years ago
How do you put 8/100 ,3/5 ,7/10 from least to greatest
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