Because if you rotate an object 360 degrees it’s like the object never moved because the object would still be in the same spot as if you didn’t move it
Answer:
The correct answer is:
Between 600 and 700 years (B)
Step-by-step explanation:
At a constant decay rate, the half-life of a radioactive substance is the time taken for the substance to decay to half of its original mass. The formula for radioactive exponential decay is given by:
First, let us calculate the decay constant (k)
Next, let us calculate the half-life as follows:
Therefore the half-life is between 600 and 700 years
Answer:
y = 6 or 8
Step-by-step explanation:
1. Subtract the constant:
y^2 -14y = -48
2. Add the square of half the y-coefficient:
y^2 -14y +49 = -48 +49
Write as a square, if you like:
(y -7)^2 = 1
3. Take the square root:
y -7 = ±√1 = ±1
4. Add the opposite of the constant on the left:
y = 7 ±1 = 6 or 8
The solution is y = 6 or y = 8.
Answer:
The height of a puppy to be an adult is about 60 inches tall.
Step-by-step explanation:
Dog's height was predicted as y = 4.5 + 0.7(x1) + 0.55(x2). Given than mother's height(x1) is 40.3in and father's height(x2) is 45.9in, so you can just substitute x1 & x2 value into the equation :
x1 = 40.3in
x2 = 45.9in
y = 4.5 + 0.7(40.3) + 0.55(45.9)
= 4.5 + 28.21 + 25.245
= 57.955in
≈ 60in (3s.f)