Answer:
157.8 g
Step-by-step explanation:
Please see the step-by-step solution in the picture attached below.
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157.8 grams or to 3 sig figures 158 grams
Density is mass / Volume
We know the density and the volume
.789 = mass / 200.0
Multiply each side by 200
.789*200 = mass
157.8 grams
We need 3 sig figures
158 grams
Answer: (2x + 3) • (x-1)
1 Pull out like factors :
4x + 6 = 2 • (2x + 3)
STEP
3
:
Pulling out like terms
3.1 Pull out like factors :
(5x - 5) = 5 • (x - 1)
y = 5/2x -15
5x - 2y = 30
-2y = -5x + 30
y = x -15
