3x^3-15x^2+18x=0 Show all steps and explain each step using a complete sentence.
2 answers:
Answer:
x= 0 ; 2; 3
Step-by-step explanation:
<u>Let's solve your equation step-by-step. </u>
Three x to the third power minus 15x to the second power + eighteen x equals 0.
<u>Step 1: Factor left side of equation. </u>
Three x times x minus 2 times x minus three equals 0
<u>Step 2: Set factors equal to 0. </u>
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Answer:
a) Given expression,
12% of 312
Since 100% of 312 = 312
⇒ 10% of 312 = 31.2,
⇒ 1% = 3.12
⇒ 2% = 2 × 3.12 = 6.24
So, 12% of 312 = 10% of 312 + 2% of 312
= 31.2 + 6.24
= 37.44
b) Given,
Total number of servings = 312,
The percentage of vitamin C in each serving = 12%,
Thus, the total amount of the vitamin C in 312 servings = 12% of 312
= 37.44,
Hence, the question can be asked about the total amount of the vitamin C.