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Zigmanuir [339]
3 years ago
14

2.21*10^11 in standard notation

Mathematics
1 answer:
Natalija [7]3 years ago
7 0
221000000000
TAKING UP SPACE
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Convert 50 miles per hour to feet per second ( 1 mile = 5280 feet and 1 hour = 3600 seconds )
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Answer:

73.3

Step-by-step explanation:

50mi/h * 5280ft/mi * 1h/3600s = 220/3 = 73.3 ft/s

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Suppose a plant grew 4 1/2 inches one week and 2 3/8 inches the next week. How many inches did it grow during both weeks?
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A student solved 6x+4=2(x−8) in four steps as shown:
mr_godi [17]
The first thing you should do is solve the equation yourself.

1) Distribute the 2.  
6x + 4 = 2x – 16

2) Next, you'll want to get the x's on one side. So add -2x to both sides.
6x + 4 + -2x = 2x + -2x - 16
4x + 4 = -16

3) Now subtract 4 from both sides
4x + 4 – 4 = -16 – 4
4x = -12

4) Finally, divide both sides by 4
4x/4 = -12/4
x = –3

To solve this problem all you need to do is look back out you work, and figure out the correct solution. The answer the question is The student made an error in Step 1.

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3× at x = 2 evaluate the following
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Answer:

the answer is 6.

Step-by-step explanation:

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Martin bikes at a constant speed to a finish line that is 15 mi away. After 20 mins, he is 10 mi from the finish line. After 30
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The answer is C. -0.25; the rate at which Martin's distance from the finish line changes per minute

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