Answer:
<em>Cathy was born in 1980 and she was 18 years old in 1998</em>
Step-by-step explanation:
<u>Equations</u>
This is a special type of equations where all the unknowns must be integers and limited to a range [0,9] because they are the digits of a number.
Let's say Cathy was born in the year x formed by the ordered digits abcd. A number expressed by its digits can be calculated as

In 1998, Cathy's age was

And it must be equal to the sum of the four digits

Rearranging

We are sure a=1, b=9 because Cathy's age is limited to having been born in the same century and millennium. Thus

Operating

If now we try some values for c we notice there is only one possible valid combination, since c and d must be integers in the range [0,9]
c=8, d=0
Thus, Cathy was born in 1980 and she was 18 years old in 1998. Note that 1+9+8+0=18
Answer:
4 hours
Step-by-step explanation:
25 pages -> 30 min
5 pages -> 6 min
200 pages -> 6*40 min =240 min
240/60= 4
Thus, the answer is 4 hours
Answer:
$97
Step-by-step explanation:
just add 72 and 25 dude
The correct answer is: Proust Was a Neuroscientist<span> by Jonah Lehrer
Science ordinarily applies a reductionist approach. To structure a testable theory that could Additionally make faultlessly retested, simulated constructs would made. This is carried will permit clean analyses Also information about statistically huge correctness. However, the test will be we should constantly make what we’ve discovered et cetera check whether it fits Previously, with the bigger picture of how things worth of effort. Our particular social order regularly imitates this reductionist approach Concerning illustration it may be progressively disjointed, with accentuation on the need will practice. As a rule A large portion researchers don't completely appreciate, understand, alternately worth the human experience Also practically specialists don't completely appreciate, understand, alternately quality those rigors of the experimental technique. [I will concede on this continuum, i might fit additional under the experimental outlook battling on like craftsmanship. ] what i might have been laid open should for perusing Proust might have been An neuroscientist is how frequently all the Workmanship predated science. With watchful investigation under those reality of the human experience there may be extraordinary knowledge under mankind's nature, our senses, and the route our universe meets expectations. Mind blowing specialists intuited the thing that the researchers of the day didn't have confidence alternately Might not yet substantiate. With occasion when science need made up for lost time with the thing that symbolization recently knew, Be that i wonder how regularly this transaction of the two planets might have been acknowledged what's more entryway much speedier we Might have gotten here whether science seen art.
</span>