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3 years ago

Solve the eqaution -12+5k=15-4k

2 answers:

7 0

Simple....

you have:

-12+5k=15-4k

isolate the variable...

-12+5k=15-4k
+12 +12

5k=27-4k

5k=27-4k
+4k +4k

9k=27

k=3

Thus, your answer.

Leviafan [203]3 years ago

4 0

<span>-12+5k=15-4k
=> -12 - 15 = -4k - 5k
=> -27 = -9k
=> -9k = -27
=> k = -27/-9
=> k = 3

Hope it helps !!!</span>

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Write ln 2x + 2x ln x -ln 3y as a single logarithm.

andreev551 [17]

Answer: option c.

Step-by-step explanation:

To solve this problem you must keep on mind the properties of logarithms:

$ln(b)-ln(a)=ln(\frac{b}{a})\\\\ln(b)+ln(a)=ln(ba)\\\\a*ln(b)=ln(b)^a$

Therefore, knowing the properties, you can write the expression gven in the problem as shown below:

$ln2x+2lnx-ln3y=ln2x+lnx^2-ln3y\\\\=ln(2x)(x^2)-ln3y\\\\=ln(\frac{2x^3}{3y})$

Therefore, the answer is the option c.

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3 years ago

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3 years ago

Two bicycles are driving on the circle in the same direction with speeds of 9 mph and 5 mph respectively. How many points are th

pychu [463]

Given that,

Speed of first bicycle = 9 mph

Speed of second bicycle = 5 mph

Suppose the length of the circle 24 miles.

We need to find the relative velocity

Using formula of relative velocity

$v=v_{1}-v_{2}$

Put the value into the formula

$v=9-5$

$v=4\ mph$

We need to calculate the time

Using formula of time

$t=\dfrac{d}{v}$

$t=\dfrac{24}{4}$

$t=6\ hr$

We need to calculate the distance of the points where the two bicycles meet

Using formula of distance

For first bicycles,

$d=9\times6$

$d=54\ miles$

For second bicycles,

$d'=5\times6$

$d'=30\ miles$

Hence, The points where the two bicycles meet after every 6hr at 30 miles and 54 miles.

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3 years ago

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grin007 [14]

Answer:

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x=2

y=x2+2

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Step-by-step explanation:

This is because these are the simplest forms of the equation. seeing as a function is f(x) (which is the same as y) when an equation is equal to a single variable, it is "solved" for hat variable and therefore best represents the equation of the function :)

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2 years ago

What is the greatest common factor of 21, 15, and 18?

tresset_1 [31]

Answer:

Step-by-step explanation:

21÷3=7

15÷3=5

18÷3=6

7 5 and 6 do not have a gcf except for 1.

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2 years ago