Answer:
3.78
Step-by-step explanation:
Answer:Exact Form: x
=
±
√
41
−
7
Decimal Form:
x
=
−
0.59687576
…
,
−
13.40312423
…
Step-by-step explanation:Use the formula
in order to create a new term. Solve for x by using this term tocompletethe square.
Exact Form: x
=
±
√
41
−
7
Decimal Form:
x
=
−
0.59687576
…
,
−
13.40312423
…
Step-by-step explanation:
z-score is:
z = (x − μ) / σ
For the four students:
z = (1990 − 1548) / 319 = 1.39
z = (1280 − 1548) / 319 = -0.84
z = (2240 − 1548) / 319 = 2.17
z = (1450 − 1548) / 319 = -0.31
z-scores are considered significant if they are less than -2 or greater than 2. So the third student's score is unusual.
The line means it is -.3333333333333333 and so on , that's why it is greater than -.33
Answer:
0.025 grams
Step-by-step explanation:
The water in the stopcock has a volume of 25 mL initially, After that, the whole water was drained out. So we have:
Volume of drained water = (25 mL)(1 x 10⁻⁶ m³/1 mL)
Volume of drained water = 25 x 10⁻⁶ m³
Density of drained water = 1000 kg/m³
So, for the mass of drained water:
Density of drained water = Mass of drained water/Volume of drained water
Mass of drained water = (Density of drained water)(Volume of drained water)
Mass of drained water = (1000 kg/m³)(25 x 10⁻⁶ m³)
<u>Mass of drained water = 0.025 gram</u>
Density
