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devlian [24]
2 years ago
10

What is the true solution to 2ln(e ^ ln(5x)) - 2ln(15) of

Mathematics
1 answer:
il63 [147K]2 years ago
4 0

Answer:

First you should see that the 2s cancel out. The equation becomes:

ln( e^{ln(5x)} ) = ln15ln(e

ln(5x)

)=ln15

Use the laws of logarithms, knowing that ln(e) = 1.

\begin{gathered}ln(5x) = ln(15) \\ 5x = 15 \\ x = 3\end{gathered}

ln(5x)=ln(15)

5x=15

x=3

The answer is B.

Hopefully this helps!

Step-by-step explanation:

x=3

Step-by-step explanation:

Given in an equation as

2 ln e^ln5x=2 ln 152lne

l

n5x=2ln15

Divide 2 to get

ln e^ln5x= ln 15lne

l

n5x=ln15

Using log rules for exponents we get

ln 5x = ln 15

Cancel ln to get

5x=15x=35x=15x=3

Hence solutin is x=3

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How many solutions does this linear system have?
ziro4ka [17]

Answer: C is correct, No solution

Step-by-step explanation:

Let’s simplify the second equation,

8x-4y=-20

We can divide the whole equation by 4...

8x/4-4y/4=-20/4

Which becomes....

2x-y=-5

Now let’s move things around to see if it’s the same equation as the one on top...

-y=-2x-5

y=2x+5

Now we need to solve the systems...

y=2x-5

y=2x+5

Since their slopes are both 2 and their y-intercepts are not identical, the answer is no solution. The two lines will continue on without ever crossing because they have the same slope.

4 0
3 years ago
PLEASE HELP I NEED ANSWER
Lubov Fominskaja [6]
You have to use the y=mx+b formula to find the equation
7 0
3 years ago
3x+7y=-6<br> 7x+3y=26<br> solve by elimenation
Artemon [7]
3x+7y=-6 -7x+3y=26 -4x+4y=-32 +4x on both sides and you end up with 4y=-32+4x now divide both sides by 4 and you get y=-8+x then to incorporate that in one of the problems 3x+7(-8+x)=-6 do the distributive property with the 7 into the () and you get 3x-56+7x=-6 now add all common variables and get 10x-56=-6 now add 56 to both sides and you get 10x=50 now divide by 10 on both side and you get x=5 now for getting y to equal a number instead of an equation 3(5)+7y=-6 15+7y=-6 subtract 15 on both sides to get 7y=-21 not divide by 7 on both sides to get y=-3 your answers are y=-3 and x=5
4 0
2 years ago
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docker41 [41]

Answer:

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7 0
3 years ago
Read 2 more answers
In a survey of 12 people, it was found that an average of $36 was spent on their child's last birthday gift with a standard devi
Nataliya [291]

Answer:

(27.3692 ; 44.6308)

Step-by-step explanation:

Mean, xbar = 36

Standard deviation, s = 11

Sample size, n = 12

Tcritical at 0.2, df = 12 - 1 = 11 ; Tcritical = 2.718

Confidence interval :

Xbar ± Margin of error

Margin of Error = Tcritical * s/sqrt(n)

Margin of Error = 2.718 * 11/sqrt(12) = 8.6308

Confidence interval :

Lower boundary : 36 - 8.6308 = 27.3692

Upper boundary : 36 + 8.6308 = 44.6308

(27.3692 ; 44.6308)

3 0
3 years ago
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