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Stells [14]
4 years ago
5

Does 4×3=3+3+3? explain your thinking

Mathematics
1 answer:
Charra [1.4K]4 years ago
4 0
No, because 4x3 is 3 multiplied 4 times and it shows 3 multiplied three times only
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Use DeMoivre's Theorem to find (4cis (pi/18))^3
DochEvi [55]
\bf \qquad \textit{power of two complex numbers}
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[\quad r[cos(\theta)+isin(\theta)]\quad ]^n\implies r^n[cos(n\cdot \theta)+isin(n\cdot \theta)]\\\\
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\bf 4\left[ cos\left( \frac{\pi }{18} \right)+i~sin\left( \frac{\pi }{18} \right) \right]^3\implies 4^3\left[ cos\left(3\cdot  \frac{\pi }{18} \right)+i~sin\left( 3\cdot \frac{\pi }{18} \right) \right]
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64\left[ cos\left( \frac{\pi }{6} \right)+i~sin\left( \frac{\pi }{6} \right) \right]\implies 64\left[\frac{\sqrt{3}}{2}+i~\frac{1}{2}  \right]
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32\sqrt{3}+32i
8 0
3 years ago
If 28% of U.S medical degrees are conferred to women, find the probability that 3 randomly selected medical school graduates are
Alchen [17]

Answer:72% of med degrees are conferred on men.

Step-by-step explanation:P(3 men) = 0.72^3 = 0.3732

Hopefully this helps!

6 0
3 years ago
What is the scientific notation of 24,631,500
kap26 [50]
Scientific notation would be:
2.46315 * 10^7
5 0
4 years ago
Read 2 more answers
What is the solution to the equation below ?
irina [24]

7/8(x-1/2)= -49/80

Multiply the bracket by 7/8

7/8x-7/16= -49/80

Move -7/16 to other side. Sign changes from -7/16 to +7/16

7/8x-7/16+7/16= -49/80+7/16

7/8x= -49/80+7/16

Find common denominator for 7/16 which is 5. Multiply 5 for the numerator and denominator.

7(5) / 16 (5)

= 35/80

7/8x= -49/80+35/80

7/8x= -14/80

Reduce -14/80 , divide by 2

(-14) /2=7 , 80/2= 40

-14/80= -7/40

7/8x= -7/40

Multiply by 8/7

7/8x*8/7= -7/40 * 8/7

Cross out 7 and 7 , and divide by 7. Cross out -7 and 7 and divide by 7. Cross out 40 and 8 divide by 8.

x= -1/5

Answer: x= -1/5 - G.

3 0
3 years ago
Is anyone able to help me with this question, if you understand it ?
lana [24]

Answer:

X = 3.879 Y = 2.943

Step-by-step explanation:

I entered both functions into my graphing calculator and graphed them. Then, I clicked 2nd Calc to find the intersection point to which it said the answer above. Hope this helped.

4 0
3 years ago
Read 2 more answers
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