Answer: -418, 728, 446, -429, 1159, -696
Step-by-step explanation:
1.
.
2.
.
3.
.
4. The sum of 429 and 429 is
. We need to subtract this from 429, so
.
5. The sum of 510 and 319 is
. Subtracting -330, we get
.
6. Call the unknown number "
". Then
, so
. (Think about it.)
The answer for that is .. 17?
Answer:
5190 g
Step-by-step explanation:
Calculate the volume:
28.0 cm × 4.90 cm × 3.60 cm = 493.92 cm³
Density is mass divided by volume:
D = M / V
Solving for mass:
M = D V
Substituting values:
M = (10.50 g/cm³) (493.92 cm³)
M = 5186.16 g
Rounding to three significant figures, the mass is 5190 g.
Answer:
8.1 g/cm
Step-by-step explanation:
Step-by-step explanation:
length = (2x + 3) units
width = (x - 7) units
Area = 2( length × width)
Area = 2( (2x + 3) × (x - 7) )
Area = 2( 2x² - 14x + 3x - 21)
Area = 2 ( 2x² -11x - 21)
Area = 4x² - 22x - 42