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Sergeeva-Olga [200]
3 years ago
11

How do you find sin20°cos40°+cos20°sin40°

Mathematics
1 answer:
Tems11 [23]3 years ago
3 0

That's of course the sum angle formula for sine

sin(a+b) = sin a cos b + cos a sin b

We have a=20°  b=40°

sin 20° cos 40° + cos 20° sin 40°

= sin(20°+40°)

= sin(60°)

= √3/2

Answer: √3/2

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Surface area of this figure
tamaranim1 [39]

Answer:

23

Step-by-step explanation:

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4 0
3 years ago
Read 2 more answers
Please help, only reply if you know answer
34kurt

Answer:

see explanation

Step-by-step explanation:

The translation represented by \left[\begin{array}{ccc}1\\4\\\end{array}\right]

interprets as a shift of 1 unit to the right ( add 1 to x- coordinate ) and a

shift of 4 units down ( subtract 4 from the y- coordinate ), then

(1, 4 ) → (1 + 1, 4 - 4 ) → (2, 0 )

(4, 4 ) → (4 + 1, 4 - 4 ) → (5, 0 )

(6, 2 ) → (6 + 1, 2 - 4 ) → (7, - 2 )

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8 0
3 years ago
What is the unit rate for 15 apples eaten in 5 minutes for 15 apples eaten in 5 minutes
USPshnik [31]

The unit rate is 3 apples per minute

Step-by-step explanation:

Unit rate will be calculated by dividing the total number of apples by the time

Given

Total number of apples = 15

Time = 5 min

So, The unit rate will be:

Unit\ rate=\frac{Apples}{Time}\\=\frac{15}{5}\\=3\ apples\ per\ min

Hence,

The unit rate is 3 apples per minute

Keywords: Unit rate, Division

Learn more about unit rate at:

  • brainly.com/question/4163549
  • brainly.com/question/4168505

#LearnwithBrainly

8 0
3 years ago
What shape is this?<br> A.cylinder<br> B.square<br> C.rectangle<br> D.tetrahedron
Mice21 [21]
Thats a rectangle .........
6 0
3 years ago
Make x the subject of the formula w − y x = z
Licemer1 [7]

Answer:

hmm ..

just transfer the X at the right side and others on left side

Step-by-step explanation:

so you get

w-z = yx

so later

(w-z)/y = x

3 0
3 years ago
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