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Rina8888 [55]
3 years ago
12

HELP PLS Determine which is True Select all that apply

Mathematics
2 answers:
shtirl [24]3 years ago
6 0
The first one and second one
Rudik [331]3 years ago
6 0

Properties of Exponential Function for Roots.

a^{\frac{m}{n}}=\sqrt[n]{a^m}

The first one is wrong as 4^1/2 would equal √4 = 2

The second choice is correct.

The third choice is correct because ∛8 = 2 and √4 also = 2

The fourth choice is wrong because √8 = 2√2

The fifth choice is also wrong because 2^1/2 would be √2 while √32 is 2^5

The sixth choice is 3^3/2 which would equal √27 = 3√3 which is correct.

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A line joins the points A (-2,-5) and B (4, 13).<br> (a) Calculate the length AB.
Oduvanchick [21]
The length of AB is 18.9 unit
3 0
2 years ago
Alex was counting his coins by 2s, because one coin was left over, he counted them by 3s. again there as one left over so he cou
Dennis_Churaev [7]
1. 

Let N be the number of coins of Alex

2a+1=N
3b+1=N
4c+1=N
5d+1=N
6e+1=N
7f+1=N

so N-1 is a multiple of 2, of 3, of 4, of 5, of 6 and of 7

so N-1 has factors 7*6*5*2*X, where X is another factor. 

2.
There is no need to write N-1 as 7*6*5*3*2*4, since being a multiple of 6, means being a multiple of 2, and of 3 as well. Also, no need to write *4, since 6 has already *2, but we need one more 2, that why we write 7*6*5*2*X

(7*6*5*2=420 is the LCM, least common multiple of 2,3,4,5,6,7)

3.

N-1=420*X. 

X cannot be 2 or more since N would become larger that 800.

X must be 1, so N-1=420, which means N=421 is the number of coins
3 0
3 years ago
Plz help me with this :(
malfutka [58]
It’s a or d I think I’m not sure I tried ):
3 0
3 years ago
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An electric motor makes 3,000 revolutions per minutes. How many degrees does it rotate in one second?
GrogVix [38]
Maybe like 5 minutes because of how much it is turning in a minimum amount of time

6 0
4 years ago
What is the perimeter of this rectangle?
soldi70 [24.7K]
P = 2(L + W)
P = 2(5+7)
P = 2(12)
P = 24
7 0
3 years ago
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