PLS HELP!! ill give brainliest
2 answers:
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Answer:
students are not interested in math
Step-by-step explanation:
We first need to find what is 72% of 25
<u>Therefore:</u>
72% of 25
=> 18
<u>Now, since we have the number of kids who are interested in math, we must do backwards equation:</u>
<u></u>
25 - 18
=> 7
Answer:
Step-by-step explanation:
{4x + y = 3
{x + y - z = 9 ←
{2x + 2y + z = 0 ←
{4x + y = 3
{3x + 3y = 9 >> Combined equation
−¾[4x + y = 3]
{−3x - ¾y = −2¼ >> New Equation
{3x + 3y = 9
_________
2¼y = 6¾
___ ___
2¼ 2¼
[Plug this back into all three equations to get the z-value of −6, and the x-value of 0];
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