I can help What is the question your trying to get an answer for
Answer:
10text=5weeks
by dividing both sides by5
2text=1week
1week=2text
by multipy both sides by 7
7weeks=14exams
so he will take 14exams in 7 weeks
Answer:
Option E.
Step-by-step explanation:
The given expressions are and .
Greatest common factor of and is
It is given that the greatest common factor of and is 45.
x and y are positive integers.
For y=45,15,9,5
Only for y=3,
The possible value of y is 3.
Therefore, the correct option is E.
A)
to solve a, the following rules are crucial:
(i)
so the difference of 2 logarithms with the same base, is the logarithm of their division, preserving the same base.
(ii) if
then b=c.
so if 2 logarithms with the same base are equal, then the arguments (b and c) are equal as well.
so
apply rule (i):
apply rule (ii):
now 'isolate' y:
b)
some more rules:
(iii)
(iv)
apply iii and iv:
then substitute
in the equation:
so now we have a quadratic equation of degree 2,
a=2, b=-5, c=2
the discriminant is
, the root of it is 3
so the roots are:
and
finally, we convert u's to x's:
means
so for u=2, x=4, and for u=1/2 we have x=1/4
Answers:
A) y=(6 x^{2} -1) \frac{(x-1)}{x}
B) solution set: {4, 1/4}
Answer:
A
Step-by-step explanation: