Answer: 29.2%
Step-by-step explanation:
The total surface area is 196.9 million square miles and out of this, land occupies 57.5 million square miles.
The probability that a meteorite would hit land is the percentage of and out of the entire planet area:
= Land area/ Total earth surface area
= 57.5/ 196.9
= 29.2%
Let numbers of books be 'b' and numbers of CDs be 'c'
We can set up two equations:
Equation [1] ⇒
Equation [2] ⇒
We are solving for the number of books and the number of CDs bought
When we have two equations in terms of two different variables;
and
, that we need to solve, then this becomes a simultaneous equation problem.
First, rearrange Equation [1] to make either
or
the subject:
Then we substitute
into Equation [2]
Now we know the value of
which is
, substitute this value into
we have
Answer:
Numbers of books = 13
Numbers of CDs = 7
Answer: 4/6
Step by step explanation:
Answer:
C.y=-3x-3
Step-by-step explanation:
Answer:
angle A + angle B = 180 degrees is correct
Step-by-step explanation: