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GREYUIT [131]
2 years ago
14

By using sum or difference formulas, cos(π−x) can be written as

Mathematics
1 answer:
Liono4ka [1.6K]2 years ago
8 0

We have cos( x - y ) = cosxcoy + sinxsiny <=> cos ( π - x ) = cosπcosx + sinπsinx <=> cos ( π - x ) = (-1)cosx + 0sinx = -cosx;

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A test was given to a group of students. The grades and gender are summarized below
faust18 [17]

Answer:

<h3>★ <u>11/</u><u>3</u><u>0</u> is the right answer. ★</h3>

Step-by-step explanation:

  • Number of male students who got 'A' in the test is 11
  • Number of female students who got 'A' in the test is 19
  • Total students who got 'A' in the test is 30
  • Probability that the male student got an 'A' is P(A | male) = (Number of male students who got 'A' in the test)/(Number of total students who got 'A' in the test) = <em><u>11/</u></em><em><u>3</u></em><em><u>0</u></em>
4 0
2 years ago
What is 1/5 (g - 10). <br><br> I need a answer! <br> Thanks for the help .
ICE Princess25 [194]
What do u bealive or think g is
7 0
2 years ago
Pls help me i need it​
Delvig [45]

Answer:

13=x

Step-by-step explanation:

Side-spliting theorem

21/(x-4)=14/6

cross multiply

21*6=14*(x-4)

distribute 14

126=14x-56

add 56 to both sides

126+56=14x-56+56

leaving you with

182=14x

Divide both sides by 14 to get x by itself

182/14=14x/14

13=x

4 0
2 years ago
Help please can someone break these problems down for me so I can show my son thanks in advance!:)
Lelu [443]
For the second question (5/6)/(4) is the same as (5/6)*(1/4) so just multiply across and you get (5/24)
3 0
3 years ago
Read 2 more answers
What is the value of y?<br> у<br> 60°<br> 80°
Marina86 [1]

Answer: 40

Step-by-step explanation:

The angles form a straight angle, so y = 180 - 80 - 60 = 40.

4 0
1 year ago
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