Answer:
Hi how are you doing today Jasmine
Answer: She now has $64 in the bank.
Step-by-step explanation:
Amount of money in bank account = $54
amount refunded by a store = $10
Total amount of money in bank =Amount of money in bank account + amount refunded by a store= $54+ $10 =$64
Let
a------------> first number
b------------> second number
we know that
a+b=-7--------> a=-7-b----------> equation 1
a-b=14--------> equation 2
<span>I substitute 1 in 2
</span>
(-7-b)-b=14-------------> -7-b-b=14----------> -7-2b=14-------> 2b=-7-14
2b=-21---------> b=-10.5
a=-7-b-------> a=-7-(-10.5)-----> a=-7+10.5------> a=3.5
the answer is
the two numbers are
a=3.5
and
b=-10.5
Ln20+ln5=2lnx
ln(20*5)=lnx^2
ln100=lnx^2
100=x^2
x=+10 or -10
