Rosa bought 6 packages of bookmarks thereare 6 bookmarks in each package how many bookmark did Rosa buy
2 answers:
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Answer:
Step-by-step explanation:
We are given a system of equation:
To find a solution to the given system, we follow the given steps.
1. Subtracting second equation from first and third equation, we get:
2. After eliminating z to obtain two equations in two variable, we observe that the two equations obtained were same.
So we have three equations that will all graph in the same plane.
Thus, there are infinite number of solution to the given system of equation.
We can write the values of x and y in the form of z:
The correct answer is: [C]: " a = ± 
" .
<span>___________________________________________________________
Explanation:
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We are given:
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</span>→ " 25 = a² + b² " ; Solve for "a" ;
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→ To solve for "a" ; we want to isolate "a" on one side of the equation.
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We can rewrite: " 25 = a² + b² " ;
as: " a² + b² = 25 " .
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Then, we can subtract " b² " from each side of the equation; as follows:
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→ " a² + b² − b² = 25 − b² " ;
to get:
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→ " a² = 25 − b² " ;
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→ Now, take the square root of EACH SIDE of the equation ;
to isolate "a" on one side of the equation; & to solve for the value(s) of "a" ;
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→ √(a²) =
;
to get:
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→ a = | | ;
→ a = ± ;
→ which is: Answer choice: [C]: " a = ± " .
______________________________________________________
<span>___________________________________________________________
Explanation:
_________________________________________________________
We are given:
_________________________________________________________
</span>→ " 25 = a² + b² " ; Solve for "a" ;
_________________________________________________________
→ To solve for "a" ; we want to isolate "a" on one side of the equation.
_________________________________________________________
We can rewrite: " 25 = a² + b² " ;
as: " a² + b² = 25 " .
_________________________________________________________
Then, we can subtract " b² " from each side of the equation; as follows:
_________________________________________________________
→ " a² + b² − b² = 25 − b² " ;
to get:
_________________________________________________________
→ " a² = 25 − b² " ;
_________________________________________________________
→ Now, take the square root of EACH SIDE of the equation ;
to isolate "a" on one side of the equation; & to solve for the value(s) of "a" ;
_________________________________________________________
→ √(a²) =
to get:
_____________________________________________________
→ a = |
→ a = ±
→ which is: Answer choice: [C]: " a = ±
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