X^2-9=-5
x^2-4=0
(x+2)(x-2)=0 [Difference of Two Squares]
x=-2,2
-2 is the smaller root.
We will use the equation:
r t = 3/4 r ( t+12 ) /:r
t = 3/4 t + 9
t - 3/4 t = 9
1/4 t = 9
t = 9 * 4 = 36 minutes ( takes a trip to the market )
36 + 12 = 48 minutes
The ride home takes 48 minutes.
The slope should be 3/5 because the rise over run using the points (0,3) and (5,6) result in 3/5.
Solving this involves substitution of values into the given formula and applying basic arithmetic.
<u>Weight of Car is 2.1 tons</u>
We are told that the dimensions of the rectangle are 7in and 5in.
Formula for area of a rectangle is;
A = Length x breadth
Thus;
A = 7 × 5
A = 35 in²
We are also given;
Air pressure; P = 30 psi
A car has 4 tires and so;
Number of tire; N = 4
We are told that formula for weight of the car in ton is;
W = APN/2000
Plugging in the relevant values;
W = (35 × 30 × 4)/2000
W = 2.1 tons
Read more at; brainly.com/question/2926797
