the solution to the system of equation below is (−2, −1).
2x − 3y = −1
11x − 9y = −13
when the first equation is multiplied by −3, the sum of the two equations is equivalent to 5x = −10.
which system of equations will also have a solution of (−2, −1)?

James adds two numbers a + b. sally adds the same two numbers but reverse the order b + a what property of addition assures us that james and sally will get the same sum

Find the cosine function that is represented in the graph.

It is saturday morning and jeremy has discovered he has a leak coming from the water heater in his attic. since plumbers charge extra to come out on the weekends, jeremy is planning to use buckets to catch the dripping water. he places a bucket under the drip and steps outside to walk the dog. in half an hour the bucket is 1/5 of the way full. what is the rate at which the water is leaking per hour?