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-BARSIC- [3]
3 years ago
15

Solve 12-5x-4kx=y for x

Mathematics
1 answer:
vfiekz [6]3 years ago
4 0

Answer:

x  = - y-12/5+4k

Step-by-step explanation:

<u>Solve 12-5x-4kx=y for x</u>

12-5x-4kx  =  y for x

substract 12 from both side

   -5x-4kx  =  y-12

Factor of -5x-4kx = -x(5+4k)

   -x(5+4k) =  y-12

Solve for x

             -x =  y-12/(5+4k)

Therefore x = - y-12/5+4k

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Marco needs to buy cat food. At the nearest store, 3 bags of cat food cost $15.75. How much would Marco spend on 5 bags of cat f
Ber [7]

Answer:

$29 dollars and 60 cents

Step-by-step explanation:

15.75 divided by 3 is 5.92 if rounded.

then 5.92x 5= 29.60

5 0
3 years ago
Read 2 more answers
Mohamed and Li Jing were asked to find an explicit formula for the sequence -5, -25, -125, -625,....
Nuetrik [128]

Answer:

Li Jing's formula i.e.  \boxed{g_n=-5\cdot \:5^{n-1}}  is right.

Step-by-step explanation:

Considering the sequence

-5,\:-25,\:-125,\:-625,...

A geometric sequence has a constant ratio r and is defined by

g_n=g_0\cdot r^{n-1}

\mathrm{Compute\:the\:ratios\:of\:all\:the\:adjacent\:terms}:\quad \:r=\frac{g_{n+1}}{g_n}

\frac{-25}{-5}=5,\:\quad \frac{-125}{-25}=5,\:\quad \frac{-625}{-125}=5

\mathrm{The\:ratio\:of\:all\:the\:adjacent\:terms\:is\:the\:same\:and\:equal\:to}

r=5

So, the sequence is geometric.

as

\mathrm{The\:first\:element\:of\:the\:sequence\:is}

g_1=-5

r=5

so

g_n=g_1\cdot r^{n-1}

\mathrm{Therefore,\:the\:}n\mathrm{th\:term\:is\:computed\:by}\:

g_n=-5\cdot \:5^{n-1}

Therefore, Li Jing's formula i.e.  \boxed{g_n=-5\cdot \:5^{n-1}}  is right.

8 0
3 years ago
Suppose a cylinder has a diameter of 18 feet and a height of h feet. Which equation can be used to find V, the volume of the cyl
IrinaVladis [17]

Answer: option A

Step-by-step explanation:

The volume of a cylinder can be calculated with the formula:

V=\pi r^2h

Where r is the radius and h is the height of the cylinder.

The radius is diameter divided by 2, then:

r=\frac{18ft}{2}\\\\r=9ft

Substitute the radius into the formula. Then you get the following equation that can be used to find V, the volume of the cylinder:

V=\pi (9)^2h

3 0
3 years ago
Read 2 more answers
Paul wants to compare whether the prices of tangerines in two supermarkets differ significantly. He has been noting down the dai
Wewaii [24]
<span>Based on the rules of statistics</span>

 68% of the data falls within 1 standard deviation of the mean

95% of the data falls within 2 standard deviation of the mean

99% of the data falls within 3 standard deviation of the mean

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Hence we accept the null hypothesis; else, if the mean falls outside the range, we reject the null hypothesis.

<span> </span>

5 0
2 years ago
Correct answer gets brainliest
Karo-lina-s [1.5K]

Answer:

<em>B. 9 < 7 or x > 16.</em>

Step-by-step explanation:

<em>I had the same question and the answer was B.</em>

7 0
3 years ago
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