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Aleksandr-060686 [28]
3 years ago
7

G(x)=4x-2 ,h(x)= 5x, evaluate (h×g)(3)​

Mathematics
1 answer:
Xelga [282]3 years ago
6 0

Answer: 50

Step-by-step explanation:

h\:\circ \:g=h\left(g\left(x\right)\right)

g\left(x\right)=4x-2

=h\left(4x-2\right)

=5\left(4x-2\right)

=20x-10

Substitute 3 for x:

= 20(3)-10

= 50

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3 years ago
A normal distribution has a mean of µ = 40 with σ = 10. If a vertical line is drawn through the distribution at X = 55, what pro
Sonja [21]

Answer:

<u>The proportion of the scores that are on the right side of the line is  0.0668</u>

Step-by-step explanation:

1. Let's review the information given to us to answer the question correctly:

µ of a normal distribution = 40

σ of a normal distribution = 10

X = 55

2. What proportion of the scores are on the right side of the line?

Let's calculate the z-score for X = 55, this way:

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Now, using the z-table, let's calculate the proportion, this way:

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4 years ago
The cost (in dollars) of making b bracelets is represented by 4 5b. The cost (in dollars) of making b necklaces is represented b
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Answer:

$(3b+2)

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The cost of making b bracelets = 4+5b

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