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Natali [406]
3 years ago
15

Simplify 4 to the 7th over 5 squared all raised to the 3rd power.

Mathematics
2 answers:
muminat3 years ago
6 0
(4^7/5^2)^ 3

= 4^21 / 5^6

which according to my calculator is 281,474,976.7   approximately
Galina-37 [17]3 years ago
3 0
Multiply the exponents 

<span>for example, (2^3)^5 = 2^(3*5) = 2^15 </span>
<span>why? </span>
<span>2^3 = 2*2*2 </span>
<span>(2^3)^5 = 2*2*2 * 2*2*2 * 2*2*2 * 2*2*2 * 2*2*2 </span>

<span>^ is just shorthand for ***... </span>
<span>Just as * is shorthand for +++... </span>

<span>2*3*4 = 2+2+2 + 2+2+2 + 2+2+2 + 2+2+2</span>
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3 0
3 years ago
Find two geometric means between 5 and 135
aniked [119]
Answer:

We are effectively looking for a and b such that 5, a, b, 135 is a geometric sequence.

This sequence has common ratio <span><span>3<span>√<span>1355</span></span></span>=3</span>, hence <span>a=15</span> and <span>b=45</span>

Explanation:

In a geometric sequence, each intermediate term is the geometric mean of the term before it and the term after it.

So we want to find a and b such that 5, a, b, 135 is a geometric sequence.

If the common ratio is r then:

<span><span>a=5r</span><span>b=ar=5<span>r2</span></span><span>135=br=5<span>r3</span></span></span>

Hence <span><span>r3</span>=<span>1355</span>=27</span>, so <span>r=<span>3<span>√27</span></span>=3</span>

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6 0
3 years ago
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