Please help ASAP , four students were discussing how to find the unit Tate for a proportional relationship. Which method is valid?
A. “ look at the graph of the relationship. Find the y-value of the point that corresponds to x=1. That value is the unit rate. “
B.”look at the graph of the relationship. Count the number of units up and the number of the units to the right one must move to arrive at the next point on the graph. Write these two numbers as a fraction”
C. “Look at the graph of the relationship. find the x-value of the point that corresponds to y=2. That value is the unit rate”
D.”look at the graph of the relationship. Find two points which have y-values that are one unit apart. The unit rate is the difference in the corresponding x-values.”

answer: evaluate the objective function at each vertex to determine which - and -values, if any, maximize or minimize the function. example: find the minimum value and maximum value of the objective function f ( x , y ) = 4 x + 5 y , subject to the following constraints

1,150 give brainliest

step-by-step explanation

2r= 2300

r =1150

7.9m and 4.3°

step-by-step explanation:

let east be +x and north be +y, x = distance * cos θ, y = distance * sin θ  

for 3.5 south, y = -3.5  

for 8.2, x = 8.2 * cos 30 and y = 8.2 * sin 30  

for 15 west, x = -15  

total x = 8.2 * cos 30 – 15 ≈ -7.9  

total y = -3.5 + 8.2 * sin 30 = 0.6  

magnitude = [(8.2 * cos 30 – 15)^2 + 0.6^2)]^0.5  

the magnitude is approximately 7.9 m  

tan θ = y/x = 0.6/-7.9  

the angle is approximately 4.3˚ north of west