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3 years ago

Use pascal's triangle to find (8 4) I don't get how to do this can some one help me please!!

1 answer:

6 0

Pull out your reference sheet that has the Pascal's Triangle.

Step 1) Locate the row that starts with 1, 8, ... If this row isn't shown, then you'll need to find a bigger Pascal's Triangle.

Step 2) Count out exactly five spaces starting at the first value 1. Why five? Because we start at 0 instead of starting at 1. The first value in the row represents $8 \choose 0$ while the second value in that row represents $8 \choose 1$ and the third value represents $8 \choose 2$ and so on. So the value $8 \choose 4$ is in the fifth slot from the left.

You should land on the value 70, which is the final answer

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Explain how the position of the decimal point changes in a quotient as you divide by increasing powers of 10.

Darya [45]

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3 years ago

What is the slope of the line that passes through the points (-2, 2), and (-4, -2)? - 2 -2

dusya [7]

The formula of a slope:

$m=\dfrac{y_2-y_1}{x_2-x_1}$

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3 years ago

Ace autos sell cars and pay sue each month as follows

Dima020 [189]

Sue's total pay of year will have three parts

1) Fixed Salary for 12 months

one month salary = £1410

so 12 month salary = £1410 x 12 = £16920

2) 26% of total profit

Total cost to the company- £473,500

Total income for the company - £549,000

Profit = Total income for the company - Total cost to the company

= £549,000 - £473,500 = £75500

Sues income from profit = 26% of £75500 = (26 × 75500)/100 = £19630

3) Bonus if Sue sells at least 16 cars

Given number of months when sue solds atleast 16 cars = 4

So bonus income = 4 × 390 = £1560

Adding the three above parts

Sue's total pay for the year = £16920 + £19630 + £1560 = £38110

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3 years ago

Write a recursive formula for each sequence given or described below.

valentinak56 [21]

Answer:

$a_{n} =a_{n-1} +3000$ and a₁ =30000 for n = 2,3,4,5,6, ......

Step-by-step explanation:

Doug has joined a job with a starting salary of $30000 per year.

Hence, if a₁ is the salary of Doug in the first year, then

a₁ =30000

Now, each year Doug will receive a raise of $3000 in his salary.

Hence, in the 2nd year, his salary(a₂) will become ( a₁ +3000) per year.

Again, in the 3rd year, his salary(a₃) will become ( a₂ +3000) per year.

Therefor, in the similar manner the recursive formula for his salary in each year will be given as $a_{n} =a_{n-1} +3000$ and a₁ =30000 for n = 2,3,4,5,6, ...... {aₙ is the yearly salary of Doug in the nth year} (Answer)

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3 years ago

The decibel level of sound in a quiet office is 10−6watts/m2.

Liono4ka [1.6K]

I don’t understand your question can you explain it more

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