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MatroZZZ [7]
2 years ago
5

Don't comment. Don't even dare to press to ch.at. Just dont.

Mathematics
1 answer:
sergij07 [2.7K]2 years ago
4 0

thanks for the points dude

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Anyone help please!!!!
Andre45 [30]
We are to verify the identity:

cos(α-B)-cos(α+B) = 2 sinα sinβ

Left hand side = cos(α - B)-cos(α + B) 

= cosα cosβ + sinα sinB - (cosα cosB - sinα sinβ)

= cosα cosβ + sinα sinB - cosα cosB + sinα sinβ)

= sinα sinβ + sinα sinβ

= 2 sinα sinβ

= Right Hand side
6 0
3 years ago
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Use quadratic regression to find
Rashid [163]

The quadratic equation is given by:

y = 3x² + 10x - 8

The standard equation of a parabola is given by:

y = ax² + bx + c

Where a, b, c are constants

At point (4, 80):

80 = a(4)² + b(4) + c

16a + 4b + c = 80     (1)

At point (-3, -11):

-11 = a(-3)² + b(-3) + c

9a - 3b + c = -11     (2)

At point (-1, -15):

-15 = a(-1)² + b(-1) + c

a - b + c = -15     (3)

Solving equations 1, 2 and 3 simultaneously gives:

a = 3, b = 10, c = -8

Therefore the quadratic equation becomes:

y = 3x² + 10x - 8

Find out more on quadratic equation at: brainly.com/question/1214333

8 0
2 years ago
5/3 dived by 3? Plz help
WINSTONCH [101]

Answer:

5/9 or 0.5

Step-by-step explanation:

i hope this helps :)

7 0
3 years ago
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Help here too please
lyudmila [28]
What’s the question
7 0
3 years ago
130% of what number is 20.8
Gemiola [76]

Answer 16

Step-by-step explanation:

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3 years ago
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