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Margaret [11]
3 years ago
5

Determine the value of the expression.

Mathematics
1 answer:
lutik1710 [3]3 years ago
8 0

It's like simple math but the sign of the answer would be the opposite.

|−19−(−14)|

|−19 + 14|

|- 5|

|- 5| = 5

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Raul has 40 toy cars in his collection.
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37

Step-by-step explanation:

40-1-2=37 silver cars

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3 years ago
21:28 = :24<br><br>plz help....​
gavmur [86]

Answer:

x=18

Step-by-step explanation:

21:28=x:24

1. rewrite: 21/28 = x/24

2. simplify: 3/4=x/24

3. multiply 24 to both sides: x=18

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A cylinder has a radius of 3 in and a volume of approximately 136.78 in? What is the height of the cylinder?
Aleonysh [2.5K]

Answer:

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3х2+9х+6<br> Foil method of
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3 years ago
If 0°&lt;0&lt;90° and sin0=12/13, find cos0 using trigonometric identities.
Aleks04 [339]

here's the solution,

we know :

\sin( \theta)  =  \dfrac{perpendicular}{hypotenuse}

So,

\dfrac{p}{h}  =  \dfrac{12}{13}

so.. let the perpendicular be 12x and hypotenuse be 13x

now,

by applying pythagoras theorem,

  • b {}^{2}  = h {}^{2}  - p {}^{2}

where,

  • b = base
  • h = hypotenuse
  • p = perpendicular

So,

  • b {}^{2}  =  ({13x})^{2}  -  ({12x})^{2}
  • b  {}^{2} = 169x {}^{2}  - 144x {}^{2}
  • {b}^{2}  = 25x {}^{2}
  • b  = 5x

so,

  • \cos( \theta)  =  \dfrac{b}{h}

  • \cos( \theta)  =   \dfrac{5x}{13x}

  • \cos( \theta)  =  \dfrac{5}{13}

hope it helps !!

3 0
3 years ago
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