Answer:
Hlo mate***!!!!!! here is ur ans.....
Answer is there are 40 girls in a class of 64 pupils.
Step-by-step explanation:
24 boys = 3: (So 8) a Ratio of 5 = 5x8 = 40, so Answer is there are 40 girls in a class of 64 pupils.
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Solve by Substitution :
// Solve equation [1] for the variable <span> y </span>
<span> </span>
[1] <span>y = </span><span>x </span>+ 12
// Plug this in for variable <span> y </span> in equation [2]
<span> [2] <span>2•</span>(<span>x </span>+12)<span> + 4x</span> = 27
</span><span> [2] <span>6x</span> = 3
</span>
// Solve equation [2] for the variable <span> x </span>
<span> [2] <span>6x = </span>3</span>
<span> [2] <span>x = </span>1/2</span>
<span>// By now we know this much :</span>
<span> <span> y = </span><span>x</span>+12</span>
<span> <span> x = </span>1/2</span>
<span>// Use the <span> x </span> value to solve for <span> y </span>
</span>
<span> <span> y = </span><span>(1/2)</span>+12 = 25/2 </span>Solution :<span> {<span>y</span>,<span>x</span>} = {<span>25/2</span>,<span>1/2</span>}</span>
<span>y=x+12;4x+2y=27 </span>Solution :<span><span> {y,x} = {25/2,1/2}</span>
</span>System of Linear Equations entered : [1] y=x+12
[2] 4x+2y=27
Equations Simplified or Rearranged :<span><span> [1] y - x = 12
</span><span> [2] 2y + 4x = 27</span></span>
Use pemdas, multiply 3 • 4 and you’ll get 12. Add 6 and the answer is 18
Answer:
General Formulas and Concepts:
<u>Alg I</u>
Step-by-step explanation:
<u>Step 1: Define</u>
3x - 4y = 7
<u>Step 2: Solve for </u><em><u>x</u></em>
- Add 4y to both sides: 3x = 4y + 7
- Divide 3 on both sides: x = (4y + 7)/3
