MATHEMATICS HIGH SCHOOL

Round 529 to two significant figures

Answers

Answer 1
Answer: With the number 529, the 5 is the most significant digit, because it tells us that the number is 500 and something. The 2 is the next most significent digit. After that digit is 9, so we will round it and add 1 onto 2 ( 2 + 1 = 3 ). Finally, 529 to 2 significant figures is: 530 ( and the second significant digit (3) has the overline ).

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A ceiling fan has 20
-inch blades (so the radius of the circular fan is
20
inches). Suppose the linear speed of the tip of a blade is
10
feet per second.

Answers


OK.  Got it !  So the fan is spinning at about 57.296 revolutions per minute.

What's your question ?

Marsha jogged 7.8 miles. erica jogged 0.5 times as far. how far did erica jog?

Answers

Solve:-

7.8 × 0.5 = How far Erica jogged
7.8 × 0.5 = 3.9
3.9 Miles

So, if Marsha jogged 7.8 miles, and Erica jogged 0.5 times as far, as Marsha, Erica jogged 3.9 Miles.

Hope I helped ya!! xD

813,763 round to the nearest ten thousand

Answers

answer:

To round 813,763 to the nearest ten thousand, we look at the digit in the ten thousand place. In this case, the digit in the ten thousand place is 3.

If the digit in the ten thousand place is 0, 1, 2, 3, or 4, we round down to the nearest ten thousand. Since 3 is in the range of 0 to 4, we round down.

To round down, we keep the digits to the right of the ten thousand place as 0. Therefore, when we round 813,763 to the nearest ten thousand, the answer is 810,000.

So, 813,763 rounded to the nearest ten thousand is 810,000.

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Jane worked 32 hours in one week. If she worked the same number of hours each day for 4 days, how many hours a day did she work? A. 8
B. 6
C. 10
D. 4

Answers

4x=32⇒ x=32/4⇒ x=8

the answer is A. 8
You need to divide, so 32/4=8, so your answer is A.8

A car can travel 247 kilometers on 19 liters of gasoline. how much gasoline will it need to go 429 kilometers?

Answers

find the number of miles per 1 liter:

247 kilometers / 19 liters = 13 kilometers per liter.


Divide how may kilometers they want to go by kilometers per liter:

429 kilometers / 13 kilometers per liter = 33 liters are needed.

The perimeter of a rectangle is 34 units. Its width is 6.5 units. What is its length?

Answers

If the width is 6.5 then double that to work out the two widths which would be 13. Take that from the perimeter so you're left with 21. Half 21 to work out one length which is 10.5. Length = 10.5
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