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OLEGan [10]
3 years ago
14

3 ^(1 − 7 x = 7 ^x find the exact value

Mathematics
2 answers:
Shalnov [3]3 years ago
7 0

Answer:

x

=

ln

(

3

)

7

ln

(

3

)

+

ln

(

7

)

Step-by-step explanation:

wariber [46]3 years ago
3 0

Answer:

x

= ln ( 3 ) 7 ln ( 3 )  + ln ( 7  )

Step-by-step explanation:

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a plane with a heading of 130° from north and an air speed of 100 km/hr, encounters a wind of 25 km/hr from the west. find the g
denpristay [2]
My vector calculator* tells me
  100∠130° +25∠90° = 122.2∠122.3°

The plane's ground speed is 122.2 km/h and its course is 122.3° from north.

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5 0
3 years ago
Find x <br> 2 ^30 divided by 8^9= 2x
Zarrin [17]

\huge\text{Hey there!}

\mathsf{\dfrac{2^{30}}{8^9}=2x}

\mathsf{2^{30}}\\\mathsf{= \bf 1,073,741,824}\\\\\mathsf{8^9}\\\mathsf{= \bf 134,217,728}

\mathsf{\rightarrow \dfrac{1,073,741,824}{134,217,728}= 2x}\\\\\\\mathsf{\dfrac{1,073,741,824}{134,217,728}= \bf 8}\\\\\\\mathsf{\rightarrow \ 8 = 2x}\\\\\\\\\large\textsf{TURN\ the\ EQUATION\ around}\\\\\\\mathsf{\rightarrow\ 2x = 8}\\\\\\\large\textsf{DIVIDE 2 to BOTH SIDES}\\\\\\\mathsf{\dfrac{2x}{2}=\dfrac{8}{2}}\\\\\\\large\textsf{CANCEL out: }\mathsf{\dfrac{2}{2}}\large\textsf{ because it gives you 1}\\\\\\\large\textsf{KEEP: }\mathsf{\dfrac{8}{2}}\large\textsf{ because it gives you the answer of x}

\mathsf{x = \dfrac{8}{2}}\\\\\\\mathsf{x = 8\div 2}\\\\\\\mathsf{x = \bf 4}\\\\\\\\\\\boxed{\boxed{\huge\text{Therefore, your answer is: \textsf{x = 4}}}}\huge\checkmark

\huge\text{Good luck on your assignment \& enjoy your day!}

~\frak{Amphitrite1040:)}

4 0
4 years ago
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Need help wit 42 ASAP
Sergeeva-Olga [200]
We know that there was a 5% increase from September to October and 5% of we know that there was a 5% increase in boys from September to October and 5% of 1,200 s 60 so 60 boys enrolled in the school in October
4 0
3 years ago
Which equation could be solved using this application of the quadratic formula? A. -2x2 â’ 8 = 10x â’ 3 B. 3x2 â’ 8x â’ 10 = 4 C
hodyreva [135]

The given question can be solve using quadratic formula.

The correct option is (c) 3x^2 +8x -10=-8.

Given:

The given equation is,

x=\dfrac{-8\pm\sqrt{8^2-4(3)(-1)}} {2(3)}---------------------------(1)

Write the general quadratic equation.

ax^2 + bx +c=0

Write the quadratic formula.

x  =\dfrac {-b \pm  \sqrt{(b^2 - 4ac)} } {2a}------------------------------- (2)

Compare equation (1) and (2).

a=3\\b=8\\c=-2

Substitute the value of a, b and c in general quadratic.

3x^2 +8x -2=0

Subtract 8 from each side of above equation.

3x^2 +8x -2 -8=0-8\\3x^2 +8x -10=-8

Thus, the correct option is (c) 3x^2 +8x -10=-8.

Learn more about quadratic equation here:

brainly.com/question/17177510

6 0
3 years ago
Solve x:<br> 6 - x/2 = 10<br> --Please Help! Maths Homework Due In For Monday! Xx
ratelena [41]

6 - \frac{x}{2}= 10  Subtract 6 on both sides

6-\frac{x}{2}-6=10-6

-\frac{x}{2}= 4

Multiply -2 on both sides to get "x" by itself

-\frac{x}{2} (-2) = 4(-2)


x = -8

4 0
3 years ago
Read 2 more answers
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