How many grams in 4 kilograms? (Enter numeric value only.)
Correct Answer : ["4000"]
Use the relation 1kg=1000 g to convert between kg and grams. Thus, 4 kg to g becomes
\(4\ kg\ast\frac{1000g}{1kg}=4000\ g\)
Thus, 4 kg is 4000 g.
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Related Questions
Correct Answer is ["3000"]
Explanation
Use the relation 1 km =1000 m to convert 3 km to m
\(3\ km\ast\frac{1000m}{1km}=3000\ m\)
So, 3 km is equal to 3000 m
Correct Answer is A
Explanation
The ratio 0.5:20=X:200 to proportion equation becomes
\(\frac{0.5}{20}=\frac{X}{200}\)
Cross-multiply to find the value of X
\(0.5\ast200=20x\)
\(100=20x\)
Divide both sides by 20 to find the value of X
\(\frac{100}{20}=\frac{20x}{20}\)
\(5=x\)
Thus, the value of X is 5.
Correct Answer is A
Explanation
Current amount of calcium = (500-325) mg = 175 mg
Correct Answer is B
Explanation
Use substitution method to determine the value of the given expression. Use 3 in place of X in the given expression.
\(3x^2-2\frac{1}{3}x\)
First convert the mixed fraction into improper fraction as
\(2 \frac{1}{3}=\frac{\left(3\ast2\right)+1}{3}=\frac{6+1}{3}=\frac{7}{3}\)
Now the expression becomes
\(3x^2-\frac{7}{3}x\)
In place of X insert 3
\(3\left(3\right)^2-\frac{7}{3}\left(3\right)=3\left(9\right)-7=27-7=20\)
When X=3, the equation reduces to 20.
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