Answer:
k+7
Step-by-step explanation:
because k is the age of kit so Anika is 7 years older, so u have to add
sorry if I'm wrong
Answer:
B. 82.8
Step-by-step explanation:
Answer:
The answer is given below
Step-by-step explanation:
The question is not complete. The correct question is:
A square based pyramid have a height of 30 cm and base of 10 cm. The The square based pyramid is cut horizontally at a height of 15cm to leave this frustum.
Answer:
The frustum would have a base of 10 cm and height of 15 cm. The lower base has a length of 10 cm. to calculate the upper base, we use the formula:

Substituting:

The volume of the frustum is given by the formula:

Where h is the height of the frustum = 15 cm, A1 is the area of the lower base = 10 * 10 = 100 cm², A1 is the area of the upper base = 5 * 5 = 25 cm²
Substituting gives:

Answer:
10.96 hours will take for 85% of the lead to decay.
Step-by-step explanation:
Suppose A represents the amount of Pb-209 at time t,
According to the question,







Let
be the initial amount,


Since, the half-life of 3.3 hours.


Here, 

By substituting the values,



35^6 power. This is a simple problem just add the exponents! Hope this helps!