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FromTheMoon [43]
3 years ago
6

Xiao's teacher asked him to rewrite the sum 60+90 as the product of the GCF of the two numbers and a sum. Xiao wrote 3(20+30). W

hat mistake did Xiao make? How should he have written the sum?
Mathematics
1 answer:
Sergio [31]3 years ago
6 0
The\ mistake:GCF(60;\ 90)\ isn't\ 3\ just\ 30.\\\\Correct\ answer:60+90=30(2+3)
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ArbitrLikvidat [17]

Answer:

x = 7.5

Step-by-step explanation:

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Another way

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5 0
3 years ago
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Klio2033 [76]

Answer:

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Step-by-step explanation:

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8 0
2 years ago
Complex numbers zj and zz are given by zj = 3- j2, zz = - 4 + j3. (a) express zj and zz in polar form. (b) find lz1l by first ap
inna [77]

Solution:

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Part a:

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Part b:

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|z1| =  √(3− j2)(3+ j2) = √ 13 = 3.60.

Part c:

With the help of part a:

z1z2 = 3.6e^{-j33.7^{\circ}}.5e^{j143.1^{\circ}}

6 0
3 years ago
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natima [27]

Answer:

B

Step-by-step explanation:

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3/4=0.75

5/4=1.25

23/4=5.75

8 0
2 years ago
Read 2 more answers
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Phantasy [73]
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8 0
3 years ago
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