20 x 42= 840
So the area would be 840 mm^2.
Answer:
the last set
Step-by-step explanation:
hope this helps :) have a nice day !!
**please let me know if this was wrong**
Answer:
all fractions containing integers are rational numbers is true I believe.
Step-by-step explanation:
I believe you are referring to the half-life formula, which is used to calculate the half-life (when the substance drops to half of its original amount) of radioactive substances. The equation is as follows:

<em>A</em> is the remaining amount
<em>P</em> is the initial amount
<em>t</em> is the time that has passed
<em>h</em> is the half-life of the substance
When plugging values into the equation, make sure that <em>t </em>and <em>h </em>are both measured in the same unit (e.g. <em>t </em>days and <em>h </em>days), as well as <em>A </em>and <em>P</em>.
Answer:
Alexandra drove 980 miles
Step-by-step explanation:
70×14=980