Please help me please
67). Inez walked in the treadmill for 7/10hr and had stopped for 1/2hr. How much time he was actually working out?

69).During a 12- hour period, the temperature dropped 48 °, how many degrees did the temperature dropped each hour?

70). The elevation of Turpan Pendi in China is -185 meters. The elevation of the Qattara Depression in Egypt is -163 meters. Compare the two elevations using < or >.

Step-by-step explanation:

Hello!

Inez walked in the treadmill for 7/10hr and had stopped for 1/2hr. How much time he was actually working out?

Time in the treadmill is hr

1 hour is the whole, you can express it as .

If you express it in minutes then , then

Now you can calculate the amount of time he was on the treadmill:

Time he had stopped

Between the time he was on the treadmill and the time he rested, he worked out for 42 + 30= 72 min = 1 hour and 12 minutes.

During a 12- hour period, the temperature dropped 48 °C how many degrees did the temperature dropped each hour?

You can use cross multiplication to calculate how many degrees per hour the temperature decreased:

If in 12 hrs it decreased 48ºC

Then in 1 hr it decreased 4ºC

The elevation of Turpan Pendi in China is -185 meters. The elevation of the Qattara Depression in Egypt is -163 meters. Compare the two elevations using < or >.______________

To easily determine which elevation is higher than the other you have to order them from least to greatest in a number line. These measurements are negative, which means that, the "higher" the module is, the less in the number line the negative value will be:

----|---------------------------------------|--------------------------------|--

-185                                        -163                                 0

(The line is not on scale)

Using < or >, you can say that  -163 meters > -185 meters.

I hope this helps!

sorry not sure

step-by-step explanation:

answer: when you burn wood, the carbon reacts with the oxygen in the air to create ash and smoke. that is a permanent change you cannot undo that.

step-by-step explanation: