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valentina_108 [34]
2 years ago
14

Please show me the steps and not just the answer 8 - 15 + 20

Mathematics
1 answer:
Lapatulllka [165]2 years ago
8 0

Answer:

13

Step-by-step explanation:

8-15= -7

-7 + 20 = 13

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dedylja [7]
Add 3 and 2 together and you will get 5 that's the answer
7 0
3 years ago
Find the exact value of sin (x-y) if sinx=4/9 and siny=1/4
Svetach [21]

Answer:

sin(x - y) = 0.21

Step-by-step explanation:

we have the sin values which we need to get cos values

sin (A-B) = sin A cos B - sin B cos A

sin² A + cos² A = 1

sin x = 4/9

cos² x = 1 - sin² x = 1 - 16/81 = 65/81

cos² x = 65/81

cos x = √65/9

sin y = 1/4

cos² y = 1 - sin² y = 1 - 1/16 = 15/16

cos² y = 15/16

cos y = √15/4

sin(x − y) = sin x cos y - sin y cos x

sin(x - y) = 4/9 √15/4 - 1/4 √65/9

sin(x - y) = (4√15-√65)/36

sin(x - y) = 0.21

socratic Narad T

8 0
2 years ago
15 points with easy explanation please​
GaryK [48]

Answer:

that would be 38 degrees

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Which is the equation of a line that has a slope of Negative two-thirds and passes through point (–3, –1)?
weqwewe [10]

Answer:

Y=2/3x+1

Step-by-step explanation:

5 0
3 years ago
If you get both of these questions right I will give you 50 points
Stella [2.4K]

Answer:

1) c 226

2)

1. E

2. D

3. B

4. A

5. C

Step-by-step explanation:

6^3=216

5x(4-2)

5x2=10

216+10=226

8 0
3 years ago
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