Answer:
just eat your worries away, im sorry i dont know im in 7th grade and my teacher dosnt know what i am doing right now
Step-by-step explanation:
Start with x+y=10 and x-y=4
Add the equations to eliminate y:
x+y=10
+ x-y=4
2x =14
So now solve for x:
2x=14 (Divide each side by 2 to get x by itself)
x=7
Now you have solved for x, but you still need to solve for y:
x+y=10
7+y=10 (Subtract 7 from both sides to get y by itself)
y=3
Now you have both x and y but to check it, just plug it into the original equations:
x+y=10 ----> 7+3=10 (That's correct)
x-y=4 ----> 7-3=4 (That's correct)
There's your final answer.
Answer:
La edad del abuelo es 75 años y la tuya es de 15 años.
Step-by-step explanation:
Si dentro de 5 años tu abuelo (A) tendrá el cuádruple de tu edad (E), tenemos:
(1)
Ahora, si hace cinco años tenia siete veces tu edad:
(2)
Multiplicando la ecuacion (1) por -1, tenemos:
(3)
Ahora sumando la ecuación (3) con (2):
Entonces, reemplazando el valor de E en la ecuación (1):
Por lo tanto, la edad del abuelo es 75 años y la tuya es de 15 años.
Espero que te sea de utilidad!
Answer:
48
Step-by-step explanation:
Answer:
He would be making 79000 after 4 years and I am guessing t means ten and that would be 94000.
Step-by-step explanation: