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lys-0071 [83]
4 years ago
5

A student is evaluating the expression below for n = 3.7

Mathematics
2 answers:
spin [16.1K]4 years ago
8 0
1. substitute 3.7 for n
2. parentheses
3. multiplication
4. addition
iVinArrow [24]4 years ago
3 0

Given expression : 12.3 + 6 (n - 0.5)

Step 1 : substitute n = 3.7

12.3 + 6 (3.7 - 0.5)

Step 2 : Simplify the parenthesis

12.3 + 6 (3.2 )

Step 3 : Do the multiplication and open the parenthesis

12.3 + 19.2

Step 4 : Add the two number

12.3 + 19.2 = 31.5

So the answer of the given expression when n = 3.7 is 31.5

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Gabe made $72 during a 8 hour work shift. Which equation represents how much Gabe makes per hour, h?
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B. 72= 8h
In this case, h would represent 9. 72= 8(9)
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The y- intercept is when x= ?
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Answer:

The y-intercept is the point at which the graph crosses the y-axis. At this point, the x-coordinate is zero. To determine the x-intercept, we set y equal to zero and solve for x. Similarly, to determine the y-intercept, we set x equal to zero and solve for y.

Step-by-step explanation:

hope it helps

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In 1898, L. J. Bortkiewicz published a book entitled The Law of Small Numbers. He used data collected over 20 years to show that
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Answer:

The answers are;

a. The probability of more than one death in a corps in a year is 0.12521.

b. The probability of no deaths in a corps over five years is 4.736 × 10⁻².

Step-by-step explanation:

For Poisson Distribution  we have

Pₓ(k) = \frac{(\lambda t)^k e^{-(\lambda t)} }{k!}

Where:

λ = Mean per unit time

k = Specified data point

t = time

e = Euler constant

a. The probability of more than one death in a corps in a year is given by

The mean of the Poisson distribution for one year is given as

λ·t = 0.61 × 1 = 0.61

Therefore by using complement principle, we have

P (X >1) = 1 - P(X = 0) - - P(X = 1)

=1- \frac{(0.61)^0 e^{-(0.61)} }{0!} -  \frac{(0.61)^1 e^{-(0.61)} }{1!}

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= 0.12521

b. Here we have t = 5

Therefore the mean = λ·t = 0.61×5 = 3.05

The probability of there being no deaths in a corps for over five years is

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The probability is 4.736 × 10⁻² .

5 0
4 years ago
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Subract (21x) - (-16 + 7x) can someone help me
koban [17]

The solution to (21x) - (-16 + 7x) is 14x + 16

<h3><u>Solution:</u></h3>

Given that (21x) - (-16 + 7x)

We have to evaluate the given expression

Let's look at the given expression

(21x) - (-16 + 7x)

Multiply the terms within second bracket with minus sign

<em><u>There are two simple rules to remember:</u></em>

  • When you multiply a negative number by a positive number then the product is always negative.
  • When you multiply two negative numbers or two positive numbers then the product is always positive

⇒ (21x) + 16 - 7x

Removing the parenthesis

⇒ 21x + 16 - 7x

Combining the like terms,

⇒ 14x + 16

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What is the perimeter of a parellorgram
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Answer:

(a+b) * 2

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