The temperature of water in a certain lake on a day in October can be determined by using the model y=15.2-0.537x where x is the

Question

4 years ago

10

The temperature of water in a certain lake on a day in October can be determined by using the model y=15.2-0.537x where x is the

number of feet down from the surface of the lake and y is the Celsius temperature of the water at that depth. Based on this model, how deep in the lake is the water 9 degrees? (Round to the nearest foot.) a. 12 c. 67 b. 45 d. 30

Mathematics

2 answers:

beks73 [17] · Answer 1 · 2021-12-20T23:30:17+03:00

beks73 [17]4 years ago

5 0

<span>y=15.2-0.537x substitute 9 for y

9</span><span>=15.2-0.537x add .537x to both sides and subtract 9 from both sides
.537x =6.2 divide both side by .537
x= 11.545 round it to 12</span>

alexandr402 [8] · Answer 2 · 2021-12-21T00:33:32+03:00

alexandr402 [8]4 years ago

3 0

The water is 9 degrees at a depth of 12 feet