Answer:
Step-by-step explanation:
Given:
The system of equations given are:
If an equation is multiplied by a number throughout, then the equation remains the same by multiplication property of equality. The multiplication property of equality says that if both sides of the equation is multiplied by the same number, then the new equation is equivalent to the previous equation.
For example: If is multiplied by 2 on both sides, then the new equation will be which is equivalent to .
So, from among all the choices given, the first choice represents the above mentioned property. The equation is multiplied by 3 on both sides. So, the equation is equivalent to .
The second equation has not been changed. So, the equivalent system of equations to the given system is:
<span>Using the
formula d=m/v, we first need to convert 5.0 and 45.0 to their SI unit
equivilents. 5.0g is 0.005kg, 45.0cm^3 becomes 0.000045m^3.Therefore, the density of your cube is 0.005/0.000045=111.11 kg/m^3(5 s.f)</span>
Answer:the system has no solutions
Step-by-step explanation:
Answer:
victor tiene 35 años, mientras que luis tiene 21.
Step-by-step explanation:
No hablo español muy bien, pero ...
Tome 14 de 56, y obtuve 42. Divida 42 por 2, y usted obtiene 21. Esta es la edad de Luis. luego agrega 14, que es 35, y obtienes el vencedor.
¡Espero que esto ayude! :))