Answer:
x=3 y=2
Step-by-step explanation:
please refer to the picture I sent
54. log(20x) - log4 = 2
1 answer:
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Answer:
The statement is false.
Step-by-step explanation:
Here we need to remember some things:
Integer numbers are closed under multiplication.
This means that for two integers a and b, the product a*b is also an integer.
A rational number is a number that can be written as the quotient of two integer numbers.
An irrational number is a number that can't be written as the quotient of two rational numbers.
Now let's see the statement:
"The product of two rational numbers is irrational."
The product of two rational numbers is written as:
Where a, c, b, and d are integers.
We can rewrite that product as:
Because of the first property, we know that a*c is an integer, and b*d is also an integer, so here we have a quotient of two integer numbers, so this is a rational number.
Then the product of two rational numbers is a rational number.
Then the statement is false.
<u>ANSWER</u>
(C) y
<u>EXPLANATION</u>
We have two equations:
The first one is
The second equation is
Let us make z the subject of this second equation:
We now add equation (1) and (3) to get:
We simplify to get:
Divide throu by 2.
The correct answer is C