Solve system of equations by elimination. Show all your steps. - 3x + 5y = -11
3x + 7y = -1

x and y = (2,-1)

Step-by-step explanation:

3x + 5y = -11

3x = -1 - 7y

-(-1 - 7y) + 5y = -11

y = -1

3x=-1-7x(-1)

x = 2

(x,y) = (2,-1)

-3x2+5x(-1) = -11

3x2+7x (-1) = -1

-11 = -11

-1 = -1

solution

x and y = (2,-1)

We must first find the rate taken to cover 1500.0 m within 14 min and 34.56 sec. We can first convert the time into seconds and hence, we have time = 14(60) + 34.56 = 874.56 seconds. Recall that rate = distance/ time. And using the given for the men's world record, we have rate = 1500.0 m / 874.56s = 1.715 m/s Now, to find the time taken to cover 0.350 miles, we can first convert the distance to meters then use the equation given below. time = distance/rate where distance is equal to 0.350(1609) = 563.15 m. Hence, we have time = 563.15 / 1.715 = 328.37 s From this, we can see that it will takes 328.37 seconds to cover 0.350 miles. 328.37 seconds