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3 years ago

Yet another question for my final please answer and thanks in advance

Mathematics

2 answers:

likoan [24]3 years ago

6 0

Answer:

a. 7 ft

Step-by-step explanation:

$\sin 4\degree = \frac{v}{100}\\\\0.0697564737= \frac{v}{100}\\\\v = 0.0697564737\times 100\\\\v = 6.97564737\\\\v \approx 7 \: ft$

matrenka [14]3 years ago

4 0

ANSWER:

On using trigonometric function, we get

sin4° = p/h
0.06976 = v/100
v = 100 × 0.06976
v = 6.976 or 7ft rounded.

So, <u>Correct choice</u> - [A] 7ft.

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Consider the selling of the units positive earning and the purchasing of the units negative earning.

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therefore,

$- x + 4y + 6z = 13000$

Thus our system of equations is

$\begin{cases}3x + 5y - 4z = 6000\\2x - 3y + z = 0\\ - x + 4y + 6z = 13000\end{cases}$

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we will consider elimination method to solve the system of equations. To do so ,separate the equation in two parts which yields:

$\begin{cases}3x + 5y - 4z = 6000\\2x - 3y + z = 0\end{cases}\\\begin{cases}2x - 3y + z = 0\\ - x + 4y + 6z = 13000\end{cases}$

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Solving the equation for x and y yields:

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plug in the value of x and y into 2x - 3y + z = 0 and simplify to get z. hence,

$\implies z= \dfrac{217000}{151}$

Therefore,the prices of commodities X,Y,Z are respectively approximately 1477, 1464, 1437

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