What is incorrect in this? And how do I correct it?

Mathematics

1 answer:

german3 years ago

7 0

$\bf \begin{cases} y=3x+2\\ -3x+y=2\\ 3x-y=-2\\ ------\\ 6x-2y=10 \end{cases}\implies \begin{cases} 3x-y=-2\\ 6x-2y=10 \end{cases}\implies \begin{bmatrix} 3&-1&|&-2\\ 6&-2&|&10 \end{bmatrix}\\\\ -------------------------------$

$\bf \stackrel{\textit{system's determinant}}{ \begin{bmatrix} 3&-1\\6&-2 \end{bmatrix}\implies (3\cdot -2)-(6\cdot -1)}\implies -6-(-6)\implies -6+6\implies 0 \\\\\\ \stackrel{\textit{systerm determinant of 0 means}}{\textit{the system has \underline{no solutions } or \underline{infinitely many solutions}}}$

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At a sporting event, players are projected as larger–than–life images on a large screen television using a scale of 4 inches = 5

mars1129 [50]

Answer:

Option A $95\ ft$

Step-by-step explanation:

we know that

$1\ ft=12\ in$

The height of the player is $6\ ft\ +4\ in$

$6\ ft\ +4\ in=6*12+4=76\ in$

by proportion

$\frac{4}{5} \frac{in}{ft}=\frac{76}{x}\frac{in}{ft}\\ \\x=5*76/4\\ \\x=95\ ft$

4 0

3 years ago

How would you put -3x-7y-14=0 in standard form

aalyn [17]

Hello!

To put -3x-7y-14=0 into standard form, or ax+by=c where the a value cannot be negative, and there are no fractions or decimals, or any common factors, first add -14 to both sides to get -3x-7y=14. Then, since your a value is negative, multiply the entire equation by -1 which will result in your answer:
3x+7y=-14

Hope this helps!

6 0

3 years ago

PLEASE HELP ME‼️ what is the correct reason for each step and the proof?

Pachacha [2.7K]

actually this equation is correct but I didnt understand what it wants

4 0

3 years ago

Y = 4x 2 using x={−2, 1, 2}

Pani-rosa [81]

I hope this helps you