$\log5x+\log(x-1)=2\\
D:5x>0 \wedge x-1>0\\
D:x>0 \wedge x>1\\
D:x>1\\
\log5x(x-1)=2\\
10^2=5x^2-5x\\
5x^2-5x-100=0\\
x^2-x-20=0\\
x^2-5x+4x-20=0\\
x(x-5)+4(x-5)=0\\
(x+4)(x-5)=0\\
x=-4 \vee x=5\\
-4\not \in D\Rightarrow x=5
$

8 0

3 years ago

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Calvin's plane is flying at a speed of 600 miles per hour. If y represents the distance the plane has traveled and z represents

Klio2033 [76]

I think it would be D but i am not for sure

6 0

2 years ago

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Classify the variable z in <br>z square = 0.02<br>as rational or irrational

DochEvi [55]

Answer:

Irrational

Step-by-step explanation:

When we take the square root of both sides, we get z = 0.141421... and since there are no fractions and the decimals go endlessly on, it is irrational.

3 0

3 years ago