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Salsk061 [2.6K]
3 years ago
14

You are given that sin(a)=8/17, with a in quadrant ii, and sin(b)=−5/13, with b in quadrant iii. find cos(a−b)

Mathematics
1 answer:
masha68 [24]3 years ago
5 0
1.5 is the answer too your question sir thanks.
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Find the rate of change in the table​
mixas84 [53]

Answer:

I'm pretty sure it's +(-6).

Step-by-step explanation:

Basically for these, you find the slope. The slope equation is y1-y2/x1-x2.

Pick two points.

I'll just do (1,15) and (2,9).

15-9/1-2 = 6/-1 = -6.

I don't know if you were taught it this way, but my math teacher always told us that the rate of change had to be positive.

So you'd say the rate of change is +(-6), not -6.

Hope that sorta helped lol

3 0
3 years ago
What is the ratio of 140:160
levacccp [35]

Answer:

it reduces to 7:8

Step-by-step explanation:

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kramer

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Here, Convenience sampling is used by the poll

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Convenience sampling also called as opportunity, grab or accidental sampling is a kind of non-likelihood testing that includes the sample being drawn from that piece of the populace that is near hand. This sort of sampling is most valuable for pilot testing.  

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So, this method of sampling is biased and don't results in desired outcomes.

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OPTION B I THINK SOOOO

PLS MAKA ME BRAINIST PLS

Step-by-step explanation:

HOPE YOU HELP

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