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SIZIF [17.4K]
2 years ago
10

A HARD DRIVE COST 225,plus 40 hours per hour

Mathematics
2 answers:
meriva2 years ago
4 0
Y=40x + 225
Because x is your per hour cost.
siniylev [52]2 years ago
4 0
225+40h=y
225 + 40x = 385
-225 -225
------- -------
40x = 160
x= 4
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Give the equation of the line through the point (4, 5) with a slope of - 9/2
kodGreya [7K]

Answer:

Step-by-step explanation:

y - y1 = m(x - x1)

y - 5 = -9/2*(x - 4)

y -5  = -9/2x + 9*4/2

y - 5 = -9x/2 +9*2

y-5=-9x/2 + 18

y= -9x/2 + 18 +5

y= -9x/2 + 23    {y =mx+c}

4 0
3 years ago
Read 2 more answers
If x=-24and y=6 what is the value of the expression |x+y|
gizmo_the_mogwai [7]

Answer:

-18,18

Step-by-step explanation:

|-24+6|= -18

and also 18 because of absolute value.

8 0
3 years ago
How to solve polynomials
svp [43]
Using PADMAS really works
7 0
3 years ago
Find an equation for the inverse for each of the following.
IgorLugansk [536]

Answer:

  • <em>To solve these first swap x and y, solve for y and name it inverse function</em>

3. <u>y = -8x + 2</u>

  • x = -8y + 2
  • 8y = -x + 2
  • y = -x/8 + 2/8
  • y = -(18)x + 1/4

f⁻¹(x) = -(18)x + 1/4

-----------------------------------------

4.<u> y = (2/3)x - 5</u>

  • x = (2/3)y - 5
  • (2/3)y = x + 5
  • y = (3/2)x + (3/2)5
  • y = 1.5x + 7.5

f⁻¹(x) = 1.5x + 7.5

-----------------------------------------

5. <u>f(x) = 2x² - 6</u>

  • x = 2y² - 6
  • 2y² = x + 6
  • y² = 1/2x + 3
  • y = \sqrt{1/2x + 3}

f⁻¹(x) = \sqrt{1/2x + 3}

-----------------------------------------

6. <u>y = (x - 3)²</u>

  • x = (y - 3)²
  • \sqrt{x} = y - 3
  • y = 3 + \sqrt{x}

f⁻¹(x) = 3 +  \sqrt{x}

4 0
3 years ago
A dictionary contains the following 9 words: two, mice, three, squeaking, the, blind, deaf, birds, rabbits. What is the probabil
IgorC [24]

Answer:

<u>The correct answer is B. 1/729</u>

Step-by-step explanation:

1. Probability of any of the nine words would be randomly cited.

Using the Laplace Rule, we calculate that probability is 1/9

2. Now let's calculate the probability of any two - word phrase in specific order from those nine in the dictionary. We should remember that the probability of occurrence of two or more statistically independent events is equal to the product of their individual probabilities. So,

1/9 * 1/9 = 1/81

3. Using the same Multiplication Rule, we can calculate the probability of a random generation of the phrase "three blind mice", in that specific order. Because there are other phrases that could be generated with those three words, but in different order.  The question was specific about the order.

1/9 * 1/9 * 1/9 = 1/729

<u>The probability of randomly generating the phrase "three blind mice" is 1/729 or 0.137%</u>

7 0
3 years ago
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