If we substitute the correct value of x into the right side of the given expression, it should yield 192.
Test x = -8
(-8)^3 + 6(-8)^2 - 40(-8) = 192 Correct
Test x = -4
(-4)^3 + 6(-4)^2 - 40(-4) = 192 Correct
Test x = 6
6^3 + 6(6^2) - 40(6) = 192 Correct
All solutions make sense, so none of them should be eliminated.
Well if u think about it 8*5= 40ft ²
Answer:
2/5. 4/10. 6/15. 8/20. 10/25. 12/30
Step-by-step explanation:
Answer:
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A = oz of the solution A
b = oz of the solution B
The scientist knows that solution A is 45% salt and solution B is 95% salt. She wants to obtain 80 ounces of a mixture that is 65% salt.
a + b = 80
0.45a + 0.95b = 0.65*80
by solving the above system of equations you'll find····
a = 48 oz
b = 32 oz
~I hope this helped~
If it doesn't make since, I can try to switch up the wording ^^
