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2 years ago

Hey im having trouble understanding 40 divided by 8? could you help me out haha

Mathematics

2 answers:

meriva2 years ago

6 0

Answer:

40/8

Step-by-step explanation:

40 divided by 8 is 5.

The way you can check this is by multiplying 8*5

Basically what number times 8 will equal 40

spin [16.1K]2 years ago

6 0

Answer:

Step-by-step explanation:

Here is one way to do 5 x 8=

Write 5, 8 times, then add 5+5+5+5+5+5+5+5= 40

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The time to failure (in hours) of fans in a personal computer can be modeled by an exponential distribution with l=0.0003

Dvinal [7]

Answer: 0.0497870 ; 0.87754

Step-by-step explanation:

Given that :

λ = 0.0003

Defining a continuous distribution function :

F(x) = 1 - e^-λx = 1 - e^-0.0003x ; x ≥ 0

a. What proportion of the fans will last at least 10,000 hours?

P(x ≥ 10000) = e^-0.0003(10000) = 0.0497870

b. What proportion of the fans will last at most 7000 hours?

P(x ≥ 7000) = 1 - p(x ≤ 7000) = 1 - e^-0.0003(7000)

1 - 0.12245642825 = 0.87754

3 0

3 years ago

I need help please provide with the correct answer. it is due at 11:59 pm

expeople1 [14]

I think the answer is d

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2 years ago

Question text You have just won the lottery. The Lottery Corporation offers you two options: 1. a lump-sum payment of $400,000,

igomit [66]

Use present value equation.
If present value of annuity equals 400,000, then you are indifferent.

$PV = A(v + v^2 + ...v^{20}) \\ \\ PV = A\frac{v(1-v^{20})}{1-v}$

where v = 1/(1+r) and A = annual payment = 800,000/20 = 40,000

PV = 400,000
After subbing in the numbers, the equation is:
$10 = \frac{v(1-v^{20})}{1-v} \\ \\ 10 - 10v = v - v^{21} \\ \\ v^{21} - 11v+10 = 0 \\ \\ v = 0.928034 \\ \\ \frac{1}{1+r} = 0.928034 \\ \\ r = 0.0775$

Therefore at interest rate of about 7.75% you are indifferent.

6 0

3 years ago

Can somebody please help me with this

BartSMP [9]

You just need pythagorean theorem c=a2+b2=72+42≈8.06226

7 0

3 years ago

What is the standard form of the following equation? y = −2/5x + 4 Question 5 options: 2x + 5y = 20 2/5x + y = 4 2x - 5y = 4 5y

Svetach [21]

Answer:

2x +5y = 20

Step-by-step explanation:

The equation of a line in standard form is

Ax + By = C ( A is a positive integer and B, C are integers )

Given

y = - $\frac{2}{5}$ x + 4

Multiply through by 5 to clear the fraction

5y = - 2x + 20 ( add 2x to both sides )

2x + 5y = 20 ← in standard form

3 0

3 years ago