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3 years ago

A plumber charges of fee of $75 to make a house call. He also charges $50 per hour for labor.

Mathematics

1 answer:

Hoochie [10]3 years ago

5 0

Answer:

For part 1- y=50x+75 For part 2- y=325

Step-by-step explanation:

the cost is increasing 50 for every hour

there is a flat rate of 75 to answer a house call

y=50x+75

y=50(5)+75

y=250+75

y=325

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postnew [5]

Answer:

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Step-by-step explanation:

We want to to rewrite

$1 - ( { 2 x - 1)}^{2}$

Use difference of two squares to get:

${a}^{2} - {b}^{2} = (a + b)(a - b)$

This implies that:

${1}^{2} - ( { 2 x - 1)}^{2} = (1 +( 2x - 1))(1 - (2x - 1))$

${1}^{2} - ( { 2 x - 1)}^{2} = (1 + 2x - 1)(1 - 2x + 1)$

This finally simplifies to:

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Therefore the required product is

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3 years ago

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neonofarm [45]

Answer:

0 is an inflection point

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Step-by-step explanation:

To begin with you find the first derivative of the function and get that

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to find the critical points you equal the first derivative to 0 and get that

$3x^2 - 12x^3 = 0, x = 0,1/4$

To find if they are maximums or local minimums you use the second derivative.

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since $h''(0) = 0$ is neither an inflection point, and since $h''(1/4) = -3/4$ then 1/4 is a maximum.

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4 years ago

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Pachacha [2.7K]

Answer:

I think the answer to this is C

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3 years ago

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Mrac [35]

Given:

The faces on a number cube are labeled 1,2,2,3,4, and 5.

The number cube is rolled 114 times.

To find:

How many times would you expect the number 2 to appear?

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We have,

Total outcomes = 1,2,2,3,4, and 5.

Number of total outcomes = 6

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Number of favorable outcomes = 2

The probability of getting 2 is:

$P(2)=\dfrac{\text{Number of favorable outcomes}}{\text{Number of total outcomes}}$

$P(2)=\dfrac{2}{6}$

$P(2)=\dfrac{1}{3}$

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$E(x)=114\times P(2)$

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Step-by-step explanation:

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