Answer:
approximately 27 grams
Work Shown:
Half life formula
y = A*(0.5)^(x/H)
where,
A = starting amount = 30 grams
H = half life period = 90 years
x = number of years that pass by = 12
y = amount left over after x years
Let's plug the values for x, A and H into the formula to find y
y = A*(0.5)^(x/H)
y = 30*(0.5)^(12/90)
y = 27.3516746567466
y = 27 .... rounding to the nearest whole number
A) x=4
B) x= -3
C) x= -1/6
D) x=24
A = 1/2 * b * h
b = 14
h = 12
A = 1/2 * 14 * 12
A = 7 * 12 = 84 mm^2
Answer:
Rectangular Pyramid
Step-by-step explanation:
Rectangular Pyramid-It has 5 faces, 8 edges and 5 vertices.
Answer:
(1,-5)
Step-by-step explanation:
If you were to look on a graph and were to start at (-4,-5)
Then moved one unit to the left would be at the point (-5,-5)
Then after you'd move 6 units to the right and be left at point (1,-5)
As you can see the Y coordinate stayed constant because we only moved across the X axis.
