Since 9 is over 5 it rounds up: 40,000
Step 1: It tells you that x = 4, so replace x with 4 in the equation. 4 + 3y = 16
Step 2: Use the substitution method to subtract 4 from both sides. (4-4) + 3y = (16 - 4) ——> 3y = 12
Step 3: You must now get the variable y alone, so divide 3 to both sides. 3y/3 = 12/3 ——> y = 4
The answer is (4,4)
Answer:
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Step-by-step explanation:
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5/6(x+9/2) is the answer for this problem download photomath or socratic, that will help you as well
Answer:
Step-by-step explanation:
1) x³-2x²+10x+136=0;
the roots are among ±1; ±2; ±4; ±8; ±17... If to substitute x=-4, then 0=0, it means, x= -4 is root of the given equation. Then if to re-write the equation, then (x+4)(x²-6x+34)=0. Finally, the only root, x=-4.
2) 2x³+2x²-19x+20=0;
the roots are among ±0.5; ±1; ±2; ±2.5; ±4; ±5... If to substitute x= -4, then 0=0, it means x=-4 is root of the given equation. Then if to re-write the equation, then (x+4)(x²-3x+2.5)=0. Finally, the only root is x= -4.
