MATHEMATICS HIGH SCHOOL

A bus travels 0.8 mile east every 45 seconds. A second bus travels 0.55 mile west every 30 seconds. The buses start at the same location. Use two methods to determine how far apart the buses are after 15 minutes.

Answers

Answer 1

Answer:

32.5 miles

Step-by-step explanation:

Given that:

Eastbound bus :

0.8 miles every 45 seconds

Speed per second :

0.8 / 45 = 0.0177777 miles per second

Distance after 15 minutes

(15 * 60) * 0.0177777 = 16 miles

Westbound bus:

0.55 miles every 30 seconds

Speed per second :

0.55 / 30 = 0.0183333 miles per second

Distance after 15 minutes :

(15 * 60) * 0.0183333 = 16.5 miles

Distance apart :

16 miles + 16.5 miles = 32.5 miles

METHOD 2:

Distance covered after 15 minutes :

15 minutes = 15 * 60 = 900 seconds

Distance apart after 900 seconds :

[0.8 * (900/45)] + [0.55 * (900/30)]

16 + 16.5

= 32.5 miles

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Answers

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For example:

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How you solve b-9+6b=30

Answers

b - 9 + 6b = 30

b+ 6b - 9 = 30

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7b = 39

b = $(39)/(7)$

Nice days...........

associative property is moving a+b=b+a
add like terms
1b+6b-9=30
7b-9=30
add 9 to both sides
7b=39
divide both sides by 7
b=39/7
39/7=5 and 4/7

Janet invested $10,000, part at 2% and part at 12%. if the total interest at the end of the year is $600, how much did she invested at 2%

Answers

Janet invested $6000 at 2 %.

Let x = amount invested at 2 %. Then 10 000 - x = amount invested at 12 %

interest at 2 % + interest at 12 % = 600

0.02x + 0.12(10 000 – x) = 600

0.02x + 1200 – 0.12x = 600

0.10x = 600

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There are 11.5 ounces of cereal in a container. Additional cereal is poured into the container at a rate of 2.25 ounces per second. How many ounces are in the container after 4 seconds?

Answers

Answer:

13.........

Step-by-step explanation:

The sum of two consecutive odd integers is 236. What is the smaller integer? A.115
B.117
C.119
D.113

Answers

HEY there,

236/2=117

117 enn odd number

117+117=236

1,3,7 are odd number so

hope this helped you

Plz mark brainliest if you want (;

The answer is 117. Hope this helps and good job :)

Identify the independent variable in this relationship. A person burns a total of c calories by walking m miles. calories, c
miles, m
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Answers

The independent variable is M, Miles.
This is because you can walk however miles without any effect. But calories depends on how much you walked. Make sense?

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