8 basic algebra math problems? plz help?

Question

This might be easy for most of you but i'm confused, plz help me solve this...

1. A meter is a unit of length aproximately equal to 39.37 inches. If someone is 1.64 meters tall, what is his or her approximate height in inches?

2. 1/7 y = 9

y = ?

3. During a marathon, Elen was the winner in the womens wheelchair division, with a finishing time of 7.5262 hrs.. Round this time to the nearest hundreth of an hour.

4. 2 2/3 x 1 3/4

5. 10 5/12 - 20 5/18

6. Evaluate the expression for y= -0.8 and z= 7.16

z / y =

7. The average winde speed of a local weather station is 35.4 miles per hour. The highest speed ever recorded at the station was 318.0 miles per hour. How much faster is the highest recorded wind speed than the average wind speed.

_____miles per hour

8. (11/14 / 22/5) - (11/14 x 22/5)

Answer 1

I'll only give you three answers. For the others, look over notes or other examples that your teacher should have given you. Look up notes for this subject on google. Try  every problem and if you don't get it, ask your teacher, parents or classmates. Good luck though!

1. If 1 m=39.37 in then all you have to do is multiply 1.64 meters by 39.37 because each meter is 39.37 inches and there are 1.64 meters.

The answer is 64.5668 (are there any directions on rounding?)

3. One hundredth= .01

If the value of the thousandth (.001) is 4 or less, keep the hundredth value the same. If it is 5 or more, add one to the hundredth.

The value of the thousandth is 6, so one is added to the hundredth.

The answer is 7.53

4. 2 2/3 (or 2.66) X 1 3/4 (or 1.75)

or make it an improper fraction 2 2/3= 8/3 and 1 3/4= 7/4. Multiply the numerators (8 X 7) to get 56 and multiply the denominators (3 X 4) which is 12. Now you have 56/12 which equals 4.6 repeating.

The answer is 4.6 (repeating 6)

Answer 2

Do your own homework !!!  Y!A will not be there to help you when it is time to take your test on this stuff.

Answer 3

1.1.64*39.37= 64.56 or 65 inches

2. y=63 inches

3. 7.5 hours

4. 8/3* 7/4= 56/12 reduced to 14/3= 4 2/3

5. 10 5/12- 20 5/18= 10 15/36- 20 10/36= -10 5/36

6. z/y= 7.16/ -0.8=-8.95

7. 318.0-35.4= 272.6

8. 11/14/ 22/5- 11/14 *22/5=11/14*5/22- 11/14 * 22/5=

5/28- 121/35= 25/140-484/140=-459/140=-3 139/140