Answer:
60%
Step-by-step explanation:
40 ft² is 100%
so, 1% = 0.40 ft²
now we need to ask, how often did 1% fit into the 16 ft².
that means
16 / 0.4 = 16 / (4/10) = (16×10)/4 = 160/4 = 40 %
so, the new, smaller area is only 40% of the original area.
and that means, that the area decreased by 100-40 = 60%
Step-by-step explanation:
3(3u-5)=39
9u - 15 = 39
9u = 15 + 39
9u = 54
divide both by 9
u = 54/9
u = 6
Answer:
her degree of accuracy in measurement is 0.05 cm (Option D)
Step-by-step explanation:
The degree of accuracy in the measurement of the botanist depends on the instrument used.
For a length of 3.56 centimeters, it shows that the length of the tomato seedling was measured using meter rule or tape.
Meter rule is graduated in 1 mm or 0.1 cm. The estimated uncertainty in measurement using meter rule is half of its graduation i.e ( ¹/₂ of 0.1 cm = 0.05 cm).
If the botanist measured the length of tomato seedling as 3.56 centimeters, then her degree of accuracy in measurement is 3.56 cm ± 0.05 cm.
Therefore, her degree of accuracy in measurement is 0.05 cm (Option D)