Y=4+1.5x
7=4+1.5x
3=1.5x
2=x
It will take at least two months for her hair to be 7 cm
Greatest Common Factor of 42 and 84. Greatest common factor (GCF) of 42 and 84 is 42.
Answer:
a). Point A
b). 90°
c). Anticlockwise
Step-by-step explanation:
As it's clear from the picture attached,
Triangle XYZ has been rotated about a point A to form an image X'Y'Z'.
Angle of rotation is 90° about a point A.
a). Point which is the center of the rotation → point A.
b). Angle of rotation → 90°
c). Direction of rotation → Anticlockwise
It is 6 just look at the x
Answer:
The bones were 12,485 years old at the time they were discovered.
Step-by-step explanation:
Amount of the element:
The amount of the element after t years is given by the following equation, considering the decay rate proportional to the amount present:

In which A(0) is the initial amount and k is the decay rate, as a decimal.
The radioactive element carbon-14 has a half-life of 5750 years.
This means that
, and we use this to find k. So







So

A scientist determined that the bones from a mastodon had lost 77.8 % of their carbon-14. How old were the bones at the time they were discovered?
Had 100 - 77.8 = 22.2% remaining, so this is t for which:

Then






The bones were 12,485 years old at the time they were discovered.