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2 years ago

2. How these concepts are used indifferent situations?

Mathematics

1 answer:

Neko [114]2 years ago

8 0

If you tell me the concepts you’re referring to I might be able to help

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if a and b are the measures of two first quadrant angles and sin a = 4/5 and sin b = 5/13, find sin a+b.

Blababa [14]

<span> given that sin a= 4/5
cos a= √(1-sin²a)
   = √(1-16/25)
   = √(9/25)
   = 3/5
sin b=5/13
cos b= √(1-sin²b)
   = √(1-25/169)
   = √(144/169)
   = 12/13

sin(a+b)= sin a· cos b + cos a · sin b
      = 4/5· 12/13 + 3/5· 5/13
      = 48/65+15/65
   = 63/65
hope it helps
</span>

8 0

2 years ago

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Sales An apparel shop sells skirts for $45 and blouses for $35. Its entire stock is worth $51,750. But sales are slow and only h

inysia [295]

Answer:

260 skirts and 270 blouses are left in the store after the sale.

Step-by-step explanation:

Let x be the number of skirts and y be the number of blouses.

An apparel shop sells skirts for $45 and blouses for $35

Cost of entire stock = $51,750

Thus, we can write the equation,

$45x + 35y = 51750$

Half the skirts and two-thirds of the blouses are sold for a total of $30,600.

Thus, we can write the equation,

$45(\dfrac{x}{2}) + 35(\dfrac{2y}{3}) = 30600\\\\135x + 140y = 183600$

Solving the two equations by elimination method, we have,

$135x + 140y-(135x + 105y) = 183600 - 155250\\35y = 28350\\\\y = \dfrac{28350}{35} =810\\\\x = \dfrac{51750-35(810)}{45} = 520$

Thus, there were 520 skirts and 810 blouses in the store.

Skirt left =

$520-\dfrac{520}{2} = 260$

Blouses left =

$810 - \dfrac{2}{3}\times 810 = 270$

Thus, 260 skirts and 270 blouses are left in the store after the sale.

5 0

2 years ago

Someone help its math 50 points

dimaraw [331]

Answer:

i think it is (-1,0)

Step-by-step explanation:

if you graphed the points this option makes the most sense

4 0

2 years ago

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I ONLY HAVE 5 MIN TO ANSWER PLEASE HELP ME !!!!!!!!!!!

Iteru [2.4K]

multiplying two numbers (factors) together will result in the same thing as breaking up one factor into two addends, multiplying both addends by the other factor, and adding together both products

7 0

2 years ago

the perimeter of the top of a desk is 54 inches if the length of the desk is 15 inches what is the width of the desk

nexus9112 [7]

54-15=39
if you want to check your answer you add 39+15=54

6 0

3 years ago

Read 2 more answers

2. How these concepts are used indifferent situations?​

2. How these concepts are used indifferent situations?