The expression is 9*
+2+
.
9*
+2+
---> First square
by squaring the top and bottom number.
=9*
+2+
---> Multiply 9 and
=1+2+
---> Add
=3
---> Optional: turn into improper fraction
=
The awnser is 45 because *12 +45
a. If any letters and numbers are allowed, there will be
... 26×26×26×10×10×10 = 260³ = 17,576,000 possible plates
b. If the letters and numbers cannot repeat, there will be
... 26×25×24×10×9×8 = 11,232,000 possible plates with no repeats
c. The proabaility that a randomly chosen plate has no repeats is
... 11,232,000/17,576,000 = 108/169 ≈ 0,63905
_____
When no repeats are allowed, the first letter choice can be any of the 26 letters. The second letter choice must exclude the first letter, so there are only 25 different letters to choose from. Likewise, the third letter choice cannot be either of the first two, so there are only 24 letters to choose from. The reasoning applies to numbers in similar fashion.
Answer:
With the information provided, you can say that the total amount they spent together would be equal to the result of adding up the amount Emily spent plus the amount Lauren spent, which would be:
Amount Emily spent: $4.53
Amount Lauren spent: d
The expression is:
x=4.53+d, where:
x is the amount they spent together
d is the amount Lauren spent
The <em>Order of Operations</em> is a set of rules that tell you how to evaluate <em>Algebraic Expressions</em>.
They are different classes of object, like a knife and an apple. They cannot be compared, but one is used to make something useful of the other.