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3 years ago

I really need help on this please and thank you in advance

Mathematics

1 answer:

sasho [114]3 years ago

7 0

Answer:

Step-by-step explanation:

first, your answer will be negative,

x^12*(2y)^3=x^12(8y^3)

denominator= -x^2*y^12

after we divide them=- 8 x^10/y^9

choice E

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A family of 2 children and 1 adult visited an amusement park and paid an entry fee of $90. Another family of 3 children and 2 ad

stiks02 [169]

$\underline{\underline{\large\bf{Solution:-}}}\\$

$\leadsto$ Let us assume entry fee for child be x

$\leadsto$ Let us assume entry fee for adult be y

$\\$

$\longrightarrow$ Since Entry fees for 2 children and 1 adult is $90 an equation for entry fees will be formed as -

$\begin{gathered}\\\implies\quad \sf 2\times x + 1 \times y = 90 \\\end{gathered}$

$\begin{gathered}\\\implies\quad \sf 2 x + y = 90 \\\end{gathered} \_\_\_\_\_(1)$

$\longrightarrow$ Similarly, Entry fees for 3 children and 2 adult is $155 , so an equation for entry fees will be formed as -

$\begin{gathered}\\\implies\quad \sf 3\times x + 2\times y = 155 \\\end{gathered}$

$\begin{gathered}\\\implies\quad \sf 3x + 2y = 155 \\\end{gathered} \_\_\_\_\_(2)$

Multiplying eq (1) by 2 it will be - 

$\begin{gathered}\\\implies\quad \sf 4x + 2y = 180\\\end{gathered}\_\_\_\_\_(3)$

Subtracting eq(2) from eq(3) - 

$\begin{gathered}\\\implies\quad \sf 4x+2y - (3x+2y) = 180-155\\\end{gathered}$

$\begin{gathered}\\\implies\quad \sf 4x + 2y - 3x - 2y = 35\\\end{gathered}$

$\begin{gathered}\\\implies\quad \sf 4x - 3x +2y- 2y = 35\\\end{gathered}$

$\begin{gathered}\\\implies\quad \bf x = 35\\\end{gathered}$

Thus , entry fee for a child at the amusement park = $ 35

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2 years ago

the employees of a company were surveyed on questions regarding their educational background ( college degree) and marital statu

Llana [10]

Number employees N = 600

Then

Probability of Single + College degree = ?

Probability of single S = 100/600 = 1/6

Probability of College graduate G = 400/600 = 2/3

So then probability of both S and G is

Prob Single or Graduate = 1/6 + 2/3 = 1/6 + 4/6 = 5/6

. = 0.833

Then answer is

Probability of Single or Graduate = 5/6= 0.8333

Is also 83.33%

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1 year ago

| 3x - 5|= 11 How do u do this

Valentin [98]

Answer:

x= 5 1/3

Step-by-step explanation:

l3x-5l=11

3x-5=11

+5 +5

3x=16

/3 /3

x=5 1/3

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3 years ago

What is -5x + 15 = 35 - 10x

dezoksy [38]

Answer:

x = 4

Step-by-step explanation:

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

-5*x+15-(35-10*x)=0

Pull out like factors :

5x - 20 = 5 • (x - 4)

_________________________________________

Solve : 5 = 0

This equation has no solution.

A a non-zero constant never equals zero.

_________________________________________

Solve : x-4 = 0

Add 4 to both sides of the equation :

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Answer for -4 (-x + 2) = 2 (3x - 7)

Lana71 [14]

Step-by-step explanation:

-4 (-x + 2) = 2 (3x - 7)

2x-4=3x-7

x=3

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3 years ago

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