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just olya [345]
2 years ago
5

Pls help (pic above)

Mathematics
2 answers:
wel2 years ago
4 0

Answer:

(7 + 5) + 1 = 12 + 1 = 13 \\ 7 + (5 + 1) = 7 + 6 = 13 \\ here \: we \: use \: assosiative \: \: property \\  of \: addition\\ option (b) \\ \: thank \: you

makvit [3.9K]2 years ago
3 0

Answer:

(7+5)+1 equals 12+1 which equals 13 7+(5+1) equals7+6 which equals to 13

Step-by-step explanation:

b: associative property of addition

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an amusement park it's admission price to $15.50 per day, but now charges $1.50 per ride mark has 26 to spend on admission and r
gizmo_the_mogwai [7]

Answer:

Step-by-step explanation:

26-$15.50=10.5

10.5/1.5=7

he can ride 7 rides in one day

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A person of height 1.6m up to the eye level is standing at a point 2m away from the bank of the river and found an angle of elev
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Step-by-step explanation:

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3 years ago
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2 years ago
Find angle a. <br> You will get 20 points
VARVARA [1.3K]

Answer:

127

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6 0
2 years ago
Read 2 more answers
Examine the pattern in the powers of i you wrote in the table, and create a rule for finding the value of large powers of i. Jus
denpristay [2]
Let N be any integer. Then

i^N=\begin{cases}1&\text{if }N\equiv0\mod4\\i&\text{if }N\equiv1\mod4\\-1&\text{if }N\equiv2\mod4\\-i&\text{if }N\equiv3\mod4\end{cases}

In other words:

(1) If N is a multiple of 4, then i^N=1.

(2) If dividing N by 4 leaves a remainder of 1, then i^N=i, since i^N=i^{4n+1} for some integer n, and from (1) we know that i^{4n+1}=i^{4n}i=i (because, obviously, 4n is a multiple of 4).

(3) If instead you get a remainder of 2, then i^N=-1. This follows from (1) as well. i^N=i^{4n+2}=i^{4n}i^2=(1)(-1)=-1.

(4) Finally, if you get a remainder of 3, then i^N=i^{4n+3}=i^{4n}i^2i=(1)(-1)(i)=-i.
5 0
3 years ago
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