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!

b: |12 – x| ≤ 0.25

step-by-step explanation:      

let x be the possible lengths in inches, of the ribbons jaime cut.

we have been given that jaime is cutting strips of ribbon for a project. he tries to cut each piece to be 12 inches long, but sometimes he cuts it too long or too short by as much as 0.25 inch.  

we can represent this information in an inequality as:

by the definition of absolute value function we will get,

upon combining our inequalities we will get,

therefore, the inequality   describes all the possible lengths (x), in inches, of the ribbons jaime cut.

step-by-step explanation:

answer: 5

step-by-step explanation: