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Alona [7]
4 years ago
13

How many ways can 5 paintings be lined up on a wall?

Mathematics
1 answer:
9966 [12]4 years ago
4 0
Basically 3 : horizontally, diagonally, and vertically.  
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What is the answer to the measure of angle A?
rosijanka [135]
Answer: 110
(WORK SHOWN BELOW)

6 0
2 years ago
Perform the indicated operation (-2i+3i)+(-1-4i)
Shtirlitz [24]

Answer:

  -1 -3i

Step-by-step explanation:

It is unusual to have two imaginary terms grouped together like this. Taking the question at face value, we treat i as though it were a variable, and collect terms in the usual way.

  (-2i +3i) +(-1 -4i) = i(-2+3-4) -1 = -1 -3i

4 0
3 years ago
Find sin(a+b) if tan(a)=7/24 where a is in the third quadrant
ludmilkaskok [199]
The complete question in the attached figure

we have that
tan a=7/24    a----> III quadrant
cos b=-12/13   b----> II quadrant
sin (a+b)=?

we know that
sin(a + b) = sin(a)cos(b) + cos(a)sin(b<span>)
</span>
step 1
find sin b
sin²b+cos²b=1------> sin²b=1-cos²b----> 1-(144/169)---> 25/169
sin b=5/13------> is positive because b belong to the II quadrant

step 2
Find sin a and cos a
tan a=7/24
tan a=sin a /cos a-------> sin a=tan a*cos a-----> sin a=(7/24)*cos a
sin a=(7/24)*cos a------> sin²a=(49/576)*cos²a-----> equation 1
sin²a=1-cos²a------> equation 2
equals 1 and 2
(49/576)*cos²a=1-cos²a---> cos²a*[1+(49/576)]=1----> cos²a*[625/576]=1
cos²a=576/625------> cos a=-24/25----> is negative because a belong to III quadrant
cos a=-24/25
sin²a=1-cos²a-----> 1-(576/625)----> sin²a=49/625
sin a=-7/25-----> is negative because a belong to III quadrant

step 3
find sin (a+b)
sin(a + b) = sin(a)cos(b) + cos(a)sin(b)
sin a=-7/25
cos a=-24/25
sin b=5/13
cos b=-12/13
so
sin (a+b)=[-7/25]*[-12/13]+[-24/25]*[5/13]----> [84/325]+[-120/325]
sin (a+b)=-36/325

the answer is
sin (a+b)=-36/325

8 0
3 years ago
30 Points! To Who Ever Can Give Me The Answer
n200080 [17]

Answer:

im sorry, the answer to what?

5 0
3 years ago
Solve the equation. Write a justification for each step. <br>5m-3=22
balu736 [363]

Answer:

m=5

Step-by-step explanation:

5m-3=22

  1. take 3 the other side by doing the opposite operation

5m= 22+3

5m= 25

  • then divide it by 5 on both sides to get the value of m.
  • 5m÷5=25÷5
  • 5and 5 cancels out and the answer becomes :

m=5

5 0
3 years ago
Read 2 more answers
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