Mathematics: just solve these 2 its prob easy i just too lazy to even try or think at the moment, want to go to bed...

just solve these 2 its prob easy i just too lazy

Graciouzgigi1394

10.02.2022

The correct option is 'No Solution'.

Step-by-step explanation:

Given the system of the equations

$y=\frac{1}{2}x-1$

2x-4y=12

solving the system of the equations

$\begin{bmatrix}y=\frac{1}{2}x-1\\ 2x-4y=12\end{bmatrix}$

$\mathrm{Subsititute\:}y=\frac{1}{2}x-1$

$\begin{bmatrix}2x-4\left(\frac{1}{2}x-1\right)=12\end{bmatrix}$

$2x-4\left(\frac{1}{2}x-1\right)=12$

2x-2x+4=12

4=12

4=12 is false, therefore the system of equations has no solution.

Therefore, the correct option is 'No Solution'.

0,0(0 оценок)

mfkinnatz

03.05.2023

The mass of Aluminium if the volume is 8.5 cm³ is 22.95 grams

calculation

mass = density x volume

The density of Al is=2.7 g/cm³ (from given table)

volume = 8.5 cm³

mass is therefore = 2.7 g/cm³ x 8.5 cm³ =22.95 grams

0,0(0 оценок)