So idk the exact answer but I do know it is less than 90 so it’s an acute angle
<h3>★ <u>Required Answer:-</u></h3>
<u>First, what is an equation?</u>
➳ A mathematical statement which shows that two algebraic expressions are equal is called and equation.
Or, LHS = RHS
<u>Example</u>:- 3x - 5 = x + 8
An equation is said to be a linear equation if it contains only one variable (literal) with highest power 1.
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<u>Solving an equation:-</u>
To solve the equation x + 5 = 7 means to find the value of an unknown algebraic quantity used in the equation.
<u>Example</u>:-
- To solve the equation x + 5 = 7 means to find the value of x.
- To solve the equation 3y + 2 = 9 means to find the value of y.
- To solve the equation means to find the value of a ⠀⠀⠀⠀⠀⠀and so on!
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★ <u>Rules for solving an equation</u><u> </u><u>by</u><u> </u><u>the</u><u> </u><u>substitution</u><u> </u><u>method</u><u>:</u><u>-</u>
<u>Rule</u> ❶
If x = 2, the value of the expression 3x + 2 = 3 × 2 + 2 = 6 + 2 = 8
<u>Rule</u> ❷
If x = 0, the value of the expression 3x + 2 = 3 × 0 + 2 = 0 + 2 = 2
<u>Rule</u> ❸
If x = -2, the value of the expression 3x + 2 = 3 × -2 + 2 = -6 + 2 = -4
Now consider the algebraic expression 5x - 2y
This expression consists of variables x and y.
Now if :-
- x = 3 and y = 2, 5x - 2y = 5 × 3 2 × 2 = 15 - 4 = 11
- x = 8 and y = 5, 5x - 2y = 5 × 8 - 2 × 5 = 40 - 10 = 30
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The process of finding the value of an algebraic expression by substituting the given value of its variable is called substitution.⠀⠀
Answer:
n=80
Step-by-step explanation:
n/4=20
(n/4=20)4 . to get rid of the denominator u multiply by 4 on both sides
n=80
Answer:
B,(30)
Step-by-step explanation:
Answer:
The parallel line would be y = -x - 6
Step-by-step explanation:
In order to find the parallel line, we must first start with the slope. The slope of parallel lines must be equal. The first line has a slope of -1. Using this and the new point in slope intercept form, we can solve for the intercept.
y = mx + b
2 = -1(-8) + b
2 = 8 + b
-6 = b
Now we can model the equation using that slope and the intercept.
y = -x - 6