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-BARSIC- [3]
3 years ago
14

Functions i’ve never understood this. can anyone help?

Mathematics
1 answer:
stepladder [879]3 years ago
5 0

Answer:

11

Step-by-step explanation:

You replace all the x with 12 when its f(12). if its f(3) you would replace all the x with 3.

So,

f(12)=2/3(12)+3

f(12)=8+3

f(12)=11

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Since ∠CPD = x and segment PN is the angle bisector of this angle, therefore segment PN equally divides ∠CPD into two angles. Which means that:

∠CPN = ∠NPD = x / 2

Further, segment PN is also the perpendicular bisector of AB which further means that the intersection formed by PN and AB creates a right angle (90°). Therefore:

∠NPD + ∠DPB = 90°

x/2 + ∠DPB = 90°

∠DPB = 90 – x/2

Therefore:

sin∠<span>DPB = sin(90 – x/2) which is not in the choices</span>

However we know that the relationship of sin and cos is:

sin(π/2 - θ) = cos θ

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Therefore:

sin(90 – x/2) = cos(x/2)

 

Answer:

<span>cos(x/2)</span>

8 0
3 years ago
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Determine the area of the rectangle below
alekssr [168]

Answer:

A=10.75

Step-by-step explanation:

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In the town of Maplewood a certain type of DVD player is sold at just two stores, 43% of the sales 13) are from store A and 57%
umka21 [38]

Answer:

Option A 0.312 is right

Step-by-step explanation:

Given that iN Maplewood a certain type of DVD player is sold at just two stores, 43% of the sales 13) are from store A and 57% of the sales are from store B. 2.4% of the DVD players sold at store A are defective while 4.0% of the DVD players sold at store B are defective.

Prob for any random item form store to be defective = Prob from A and defective +Prob from B and defective

=0.43(0.024)+0.57(0.04)\\=0.03312

Prob it came from A and defective = 0.0.43(0.024)=0.01032

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=\frac{0.01032}{0.03312} \\=0.312

5 0
3 years ago
Given f^-1(36)=7, what value of x makes f(x)=36​
maw [93]

Answer:

x =7

Step-by-step explanation:

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4 0
3 years ago
A store had 1000 glasses. Each month, 10% of the glasses are sold. If it continued for each month, the store keeper can predict
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I dont know sorry but im sure sonmeone else can help you im reallu sorry
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