Answer:
x = -1
Step-by-step explanation:
7x-3x = -8+4
4x = -4
4x/4 = -4/4
x = -1
Answer:
Both X and Y are equal to 15 multiply by the square root of 2.....(i just do not know how to type the symbol on my keyboard)
Step-by-step explanation:
So for X:
X=30 sin 45
=15 multiply by the square root of 2
For Y:
Y=30 cos 45
=15 multiply by the square root of 2
But you could also use theorem of Pythagoras
Answer:
3 obreros tardaran 225 minutos en completar el trabajo.
Step-by-step explanation:
Sea R la velocidad con la que un obrero puede construir 1 muro.
Sabemos que 15 obreros construyen un muro en 45 minutos, entonces:
(15*R)*45min = 1 muro
Con esta ecuación podemos encontrar el valor R
R = (1 muro)/(15*45min)
Ahora queremos saber cuando tiempo tardan 3 obreros en construir un muro, entonces tenemos que resolver:
(3*R)*T = 1 muro
Reemplazando el valor de R obtenemos:
(3*(1 muro)/(15*45min))*T = 1 muro
T = (1 muro)*(15*45 min)/(3*1 muro)
T = 5*45min = 225 min
3 obreros tardaran 225 minutos en completar el trabajo.
Answer: Malik's total profit is $213
Step-by-step explanation:
2 * 45 = 90
2 * 65 = 130
130 - 90 = 40
3 * 85 = 255
3 * 126 = 378
378 - 255 = 123
5 * 5 = 25
5 * 15 = 75
75 - 15 = 50
50 + 40 + 123 = 213
Answer:
Multiplied by -4
Step-by-step explanation:
Since it is being switched off from negative to positive, this means that it has to be a negative number. Since two negatives make a positive, then -5*-4=20, and since a negative and a positive make a negative, it would be 20*-4=-80
