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Ne4ueva [31]
4 years ago
9

My friend sets out walking at a speed of 3 miles per hour. I set out behind her 5 minutes later at 4 miles per hour. For how man

y minutes will my friend have been walking when I catch up to her?
Mathematics
1 answer:
-Dominant- [34]4 years ago
4 0
The answer should be about 20 minutes

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Please answer this and will marked as brainlist ​
xeze [42]
<h3>Answer: 1</h3>

where x is nonzero

=======================================================

Explanation:

We'll use two rules here

  • (a^b)^c = a^(b*c) ... multiply exponents
  • a^b*a^c = a^(b+c) ... add exponents

------------------------------

The portion [ x^(a-b) ]^(a+b) would turn into x^[ (a-b)(a+b) ] after using the first rule shown above. That turns into x^(a^2 - b^2) after using the difference of squares rule.

Similarly, the second portion turns into x^(b^2-c^2) and the third part becomes x^(c^2-a^2)

-------------------------------

After applying rule 1 to each of the three pieces, we will have 3 bases of x with the exponents of (a^2-b^2),  (b^2-c^2) and (c^2-a^2)

Add up those exponents (using rule 2 above) and we get

(a^2-b^2)+(b^2-c^2)+(c^2-a^2)

a^2-b^2+b^2-c^2+c^2-a^2

(a^2-a^2) + (-b^2+b^2) + (-c^2+c^2)

0a^2 + 0b^2 + 0c^2

0+0+0

0

All three exponents add to 0. As long as x is nonzero, then x^0 = 1

4 0
3 years ago
A diver descend 15 feet below sea level. She then ascends 7 feet. What is the depth of the diver in terms of sea level
Angelina_Jolie [31]
8 feet below sea level because -15+7=-8
5 0
3 years ago
The party planner wants to know how many smaller table lengths, 2.5x-3, and widths, x, should be considered in expressing the pe
Vinvika [58]
Here ya go:) this should work

7 0
3 years ago
a total of 600 books were labelled A,B,C and D.Given that 1/4 of the book is labelled A and 3/10 of the book is labelled B.There
Marizza181 [45]

Answer:

255 is the answer........

5 0
3 years ago
Sarah cuts a shoelace that is 12 yard long into 4 equal pieces.
Lostsunrise [7]

Answer:

1/3 I believe

Step-by-step explanation:

12 divided by 4 is 3 so each piece is equal to 1/3

8 0
2 years ago
Read 2 more answers
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