121 right because 87+34 is 121 but do i have to round the number
Answer:
Step-by-step explanation:
Step1:-
Given 4 b+5=t
subtracting on both sides with 5 we get
After simplification
Dividing '4' on both sides , we get and simplification
now Final answer
To solve this we are going to use the half life equation
Where:
is the initial sample
is the time in years
is the half life of the substance
is the remainder quantity after
years
From the problem we know that:
Lets replace those values in our equation to find
:
We can conclude that after 1600 years of radioactive decay, the mass of the 100-gram sample will be
91.7 grams.
Answer:
220.5cm3
Step-by-step explanation:
volume- crossectional area times lenghth
1/2 mult 7 mult 7 mult 9= 220.5cm3
Answer:
three
P A R
A R A D
A D I S E
P Q R
A B C D
A B C D E
<em>There are three such pairs of letters. </em>