Answer:
Sabrina necesito 8 horas para llegar a su casa mientras que Diana necesito solo 3.4 horas.
Step-by-step explanation:
debemos resolver la siguientes equaciones:
A + B = 11.4
65A + 50B = 690
donde:
A = tiempo que le toma a Sabrina llegar a su casa
B = tiempo que le toma a Diana llegar a su casa
A = 11.4 - B
65 (11.4 - B) + 50B = 690
741 - 65B + 50B = 690
741 - 690 = 65B - 50B
51 = 15B
B = 51 / 15 = 3.4 horas
A = 11.4 - 3.4 = 8 horas
Answer:
fourth time ...
same problem...
the red line crosses a corner of a box at (4,20) and (2,10)
20/4 = 5
and
10/2 = 5
the slope , constant, gradient for this relationship is "5"
Step-by-step explanation:
Answer:
Step-by-step explanation:
Given that,
The base of a triangle = 2 km
The perpendicular height of the triangle =
We need to find the value of x. It is the Hypotenuse of the triangle. It can be solved as :
So, the value of x is equal to .
Answer:
192 pounds of $2.5 brand
288 pounds of $2.8 brand
Step-by-step explanation:
From the information we can write an expression that relates the two brands the total pounds of coffee the grocer wants to see. Let x be pounds of the coffee brand 1 and y be pounds of the coffee brand 2.Equation 1:
We know that the price of will be equation 2:
Two equations and two unknowns we can solve for x and y:
Substitute into the second equation:
Therefore he uses 288 pounds of brand two at $2.80 and 480-288=192 pounds of brand 1 at $2.50