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UNO [17]
2 years ago
5

Number 21 please help me !!?!! ONLY THE QUESTION PLEASE

Mathematics
2 answers:
ArbitrLikvidat [17]2 years ago
8 0

Answer:

B: 5x+5.75

Step-by-step explanation:

jenyasd209 [6]2 years ago
4 0

Answer:

B: 5x+5.75

Step-by-step explanation:

2 cones with fruit:

cones= x+x=2x

fruit= $1 x 2=$2

=2x+ 2

3 cones with candy and syrup:

cones= x+x+x=3x

candy= $0.75x3=$2.25

syrup= $0.50x3=$1.50

3x+ (2.25+1.50)

=3x+3.75

both of them together=

(3x+3.75)+(2x+2)= 5x+5.75

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Explanation:

The question states:

1) sin(Θ) = 1/4

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This is how you solve it.

1) Use the fundamental identity (in this part I use α instead of Θ, just for facility of wirting the symbols, but they mean the same for the case).

(cos \alpha )^2 + (sin \alpha )^2 =1

2) From which you can find:

(cos \alpha )^2 = 1 - (sin \alpha )^2

3) Replace sin(α) with 1/4

=> (cos \alpha )^2 = 1 - (1/4)^2 = 1 - 1/16 = 15/16

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3 years ago
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