qudoniselmore0
17.01.2020 •
Mathematics
Keisha is solving the equation 7 to the power of x equals 9. which equation shows the first step she should take?
question 4 options:
log 7 to the power of x equals log 9
log 7 to the power of x equals 9
7 x equals log 9
log 7 to the power of x equals ln 9
mary is solving the equation 2 to the power of n end power minus 3 equals 83. her first three steps are shown:
step 1: 2 to the power of n end power minus 3 equals 83
step 2: 2 to the power of n equals 86
step 3: ln 2 to the power of n end power equals ln 86
which equation could be step 4?
question 5 options:
n equals ln 86 minus ln 2
ln 2 equals n ln 86
n plus ln 2 equals ln 86
n ln 2 equals ln 86
what is the exact solution of 2 e to the power of x equals 14?
question 6 options:
ln 7
ln 12
2 ln 14
2 ln 7
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Ответ:
The correct answers are:
Question 4: the first step Keisha should take is: log to the power of x equals log 9.
Question 5: step 4 could be n ln 2 equals ln 86
Question 6: the exact solution is x=ln(7)
Step-by-step explanation:
Ok,
Question 4: the equation that shows the first step Keisha should take is:
(applying the properties of logarithms)
Solution: the first step Keisha should take is: log to the power of x equals log 9.
Question 5: Her first three steps are:
(adding 3 to both sides)
Solution: step 4 is: (applying the properties of logarithms)
Question 6: The exact solution of 2 e to the power of x equals 14 is:
(dividing both sides by 2)
(ln(e)=1)
Solution:
Ответ: