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Nataly [62]
3 years ago
13

2^-3/2^-5 A)2^2 B)1/2^2 C)2^8 D)1/2^8

Mathematics
1 answer:
CaHeK987 [17]3 years ago
4 0
Here is your answer

A) \huge{2}^{2}

REASON :

CONCEPT USED: \frac{{a}^{m}}{{a}^{n}}

= {a}^{m-n}

So,

\frac{{2}^{-3}}{{2}^{-5}}

= {2}^{-3-(-5)}

= {2}^{-3+5}

= {2}^{2}

HOPE IT IS USEFUL
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What’s the range of y=-2cos(3x)+3?
Illusion [34]

Answer:

Range [-2,2]

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{y∈R∣−2≤y≤2 }

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4 0
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Two men p and q set off from a base camp r prospecting for o,p moves 40km on a bearing 205 degree and q moves 30km on a bearing
Mkey [24]

Answer:

(a) By cosine rule, /PQ/2=202+152−2×20×15×cos145°

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= 625+600×0.8192

= 491.52+625

/PQ/2=1116.52⟹/PQ/=1116.52−−−−−−√=33.41

≊33km ( to the nearest whole number)

(b) By sine rule,

sin<QPR15=sin14533.41

sin<QPR=15sin14533.41

sin<QPR=15×0.573633.41=0.2575

<QPR=14.92°

∴ Bearing of Q from P = 25° + 14.92° = 39.92°.

≊40° (to nearest whole number)

Step-by-step explanation:

hope it helps

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6 0
3 years ago
Ill follow and give branliest and rate 5 stars and give a like if anyone gets it right
Bumek [7]

Answer:

There are two solutions

Step-by-step explanation:

Hope this helps! ;)

4 0
4 years ago
certain distance is covered in 10 hours at the speed of 40km/hour what should be the speed if the same distance to be covered in
VashaNatasha [74]

Answer:

a car finish a certain journey of 10 km in = 48 km/h. 10 h = 48 * 10 = 480

Step-by-step explanation:

let me know if this helped

6 0
3 years ago
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