Answer:
Answer Choice A (8, eight)
Step-by-step explanation:
To begin, add all of the marbles together. When finished, the answer should be 20. Because the variable 20 equals 100, you divide 4 by 100. You will get 0.04 as a result. This multiplied by 20 equals 8. Finally, the answer is A.
The formula for half-life is:

A is the amount remaining, P is the initial amount, t is the time that has passed, and h is the half-life of the substance. Plug in the values that you know and solve:

Rounded to the nearest whole number, the density of the substance was about 13<span>mg / cm².</span>
Answer:
12y+4x
Step-by-step explanation:
Multiply 4*3y and 4*x
Distributive property
The tangent function is given by:

Since the angle is in the 3rd quadrant the opposite side and the adjacent side are negative. So, the cotangent function is given by:

Answer:
12/5
6. any thang less than 90 degress
7. only 90 degress
8.any thang above 90 but not 180
9. only 180
10. the sum of 2 angels has to make 90 degress
11. the sum of 2 angles has to make 180 degress