Answer:
d(t) = -100t
Step-by-step explanation:
The general expression for the linear model is:
Since the submarine already starts at sea level, b=0:
The constant "m" is the rate at which the submarine descends in feet per minute. Considering depth as a negative quantity, m=-100
The linear model that represents the depth of the submarine relative to sea level, in feet, after t minutes is d(t) = -100t.
Answer:
x=10, y=-6
Step-by-step explanation:
1) express x from the first equation x+y=4 x=4-y
2) It is the system of equations, so both equations are simultaneous.
you can replace x to 4-y in the second one
2 *(4-y) +3y=2
8-2y+3y= 2
y=-6
x= 4-y=4-(-6)=10
The answer is x=10, y=-6
Answer:
Step-by-step explanation:
hello :
an equation for the line A is : y-14 = 3(x-2) or y = 3x +8
an equation for the line B is : y-23 = 3(x-5) or y =3x +8
same line
C. The system of equations has an infinite number of real solutions.
note : same slope means parallal or identical
Answer:
(1) x (x+ 3) - 4 (x +3) = 0
(2) x = 4 and x = -3
Step-by-step explanation:
given data
equation
(x−4)(x+3)=0
solution
given equation (x−4)(x+3) = 0
equation as a compound statement is
x (x+ 3) - 4 (x +3) = 0
and
two solutions to the equation are
so x (x+ 3) - 4 (x +3) = 0
x- 4 = 0 and x + 3 = 0
x = 4 and x = -3
Part A:
y=mx+b
621=83(7)+b
Part B:
621=83(7)+b
621=581+b
621-581=b
b=40
Insurance cost is 40$
