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3 years ago

How do you make 3ln2+2ln4 a single logarithm?

Mathematics

2 answers:

Elden [556K]3 years ago

4 0

3ln 2 = ln 2³ = ln 8
2ln 4 = ln 4² = ln 16
Sum means it is a product:
ln (8 × 16) = ln 128

Or ln (2³×4²)

zvonat [6]3 years ago

3 0

You can do on this way
3ln2 + 2ln4 = ln 2^3 + ln 4^2 = ln 8 + ln 16 = ln 128

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A cell phone company charges a monthly fee of $18 plus five cents for each call. A

aleksandr82 [10.1K]

Answer:

650 calls

Step-by-step explanation:

so since you have 18$ per month plus 5 cents per call you would do

18+0.5n(n represent the number of calls)= the total fee of $50.50 cents.

thus,now you need to figure out how much the phone calls were without the monthly fee so you would do:

50.50-18=32.50

so 32.50 is the price of all the phone calls

then you divide 32.50 by 0.05 which equals to 650

meaning that n=650

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3 years ago

The half price of helium-5 is 7.6 X 10 to the power of negative 22 seconds and the half-life helium -9 is 7 x 10 to the power of

Digiron [165]

Answer:

Approximately 9.211 times

Step-by-step explanation:

Given

$x = 7.6 * 10^{-22}s$ --- half life of helium-5

$y = 7 * 10^{-21}s$ --- half life of helium-9

Required

How many times greater is y than x

To do this, we simply divide y by x

$\frac{y}{x} = \frac{7 * 10^{-21}s}{7.6 * 10^{-22}s}$

$\frac{y}{x} = \frac{7 * 10^{-21}}{7.6 * 10^{-22}}$

Apply law of indices

$\frac{y}{x} = \frac{7 * 10^{-21--22}}{7.6}$

$\frac{y}{x} = \frac{7 * 10^{-21+22}}{7.6}$

$\frac{y}{x} = \frac{7 * 10}{7.6}$

$\frac{y}{x} = \frac{70}{7.6}$

$\frac{y}{x} = 9.211$

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3 years ago

What is the value of x?

Murrr4er [49]

Answer:

x=80 degrees

Step-by-step explanation:

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3 years ago

Marise blew up 24 balloons. She tied the balloons together in groups of 4. How many groups did she make?

Ratling [72]

Answer:

Step-by-step explanation:

you have 24 ballons, so you divide them by how many groups you can make, 4, then you have the equation 24/4, which equal 6

if you have any questions, leave them in the comments and i will try to answer them, if this helped, pls give brainliest

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3 years ago

0.65 is 10 times as much as

leonid [27]

0.65 x 10 = 6.5
0.65 is 10 times as much as 6.5

3 0

3 years ago