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galina1969 [7]
3 years ago
13

In which quadrant is the point 1, -7

Mathematics
1 answer:
yaroslaw [1]3 years ago
3 0
In QUADRANT IV is the where ( 1 , -7 ) are located 
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7.  
Leokris [45]
416.25

375*.11=41.25

41.25+375=416.25
5 0
3 years ago
Read 2 more answers
Please help me with this question
wlad13 [49]

Answer:

-3

Step-by-step explanation:

Remember the following:

cos(x)=cos(x/2 + x/2) = cos(x/2)*cos(x/2) -sin(x/2)*sin(x/2)

cos(x)=cos2(x/2) - sin2(x/2)

We also know that sin2(a)+cos2(a)=1,

so sin2(x/2)=1 - cos2(x/2). obtained from previous step.

So, our first expression can be written as:

cos(x)=cos2(x/2)-1+cos2(x/2)

Where we obtain that: cos(x/2)= sqrt( 1+ cos(x))/ sqrt(2)

If we again use sin2(a)+cos2(a)=1, we will obtain the following relation:

sin(x/2)= sqrt(1-cos(x))/sqrt(2)

Next Tang(x/2)= sin(x/2) / cos(x/2)= sqrt(1-cos(x))/sqrt(1+cos(x))=

SQRT(9/1)=3

In the given range, cos(x), hence tan(x/2) is also negative

6 0
3 years ago
Find -63+(-208)+(-11)
-BARSIC- [3]
<span> -63 + (-208) + (-11) = -63 - 208 - 11 = -282

-------------------------------------------
Answer: -282
</span>-------------------------------------------
6 0
3 years ago
Read 2 more answers
What is the Mean Absolute Deviation or MAD for each city?
ira [324]

Answer:

A: ⅚

B: ⅚

Step-by-step explanation:

City A: 4, 3.5, 5, 5.5, 4, 2

Mean: sum/n

= 24/6 = 4

|x - mean|: 0, 0.5, 1, 1.5, 0 , 2

MAD = sum|x - mean|/n

5/6 = 0.833

City B: 5, 6, 3.5, 5.5, 4, 6

Mean: 30/6 = 5

|x - mean|: 0, 1, 1.5, 0.5, 1, 1

MAD = sum|x - mean|/n

5/6 = 0.833

3 0
3 years ago
Emily's bill for dinner at a restaurant was $61. She left an 18% tip. What was the amount of the tip?
UkoKoshka [18]
You cross multiply. So 61 over 18 = x over 100. You multiply 61 and get the answer of 1600. Now with what you have left, you divide that with 18 and you should get your answer of <span>338.888889. Make sure to round it to whatever it tells you to round to!</span>

7 0
4 years ago
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