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3 years ago

The first 3 terms of n+5 3n -1

Mathematics

1 answer:

postnew [5]3 years ago

4 0

Answer:

3n^2+7n-5

Step-by-step explanation:

Distribute n to 3n and -1

Distribute 5 to 3n and -1

then you have 3n^2-n+8n-5

Use the like terms principle to get

3n^2+7n-5

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consider a wire 2 ft long cut into two pieces. one piece forms a circle with radius r and the other forms a square with side len

makkiz [27]

The formula for the radius r in terms of x . and for the maximum areas is x=2/ $\pi$ +4

Given that,

y forms a circle of radius r

y=2 $\pi$ r

r=y/2 $\pi$

(2-y)- forms Square Side x

(2-y) = 4x

x=(2-y)/4

Now Sum of Area's=Area of Square +Area of Circle

Sum = $\pi$ r² + x²

Substitute the r and x values in above equation,

A(y)= y²/4 $\pi$ +(y-2)²/ 16

To maximize Area A(y)

A'(y)= 0

2y/4 $\pi$ + 2(y-2)/16 =0

y/2 $\pi$ + (y-2)/8 =0

y = 2 $\pi$ / $\pi$ +4

Y max will be max, x to be maximum.

for maximum sum of areas,

x=2/ $\pi$ +4

Hence,The formula for the radius r in terms of x . and for the maximum areas is x=2/ $\pi$ +4

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4 0

2 years ago

+ listen

larisa86 [58]

Answer:

$4.99

Step-by-step explanation:

$34.93 \div 7$

8 0

3 years ago

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Does anyone know the answer to this?

DENIUS [597]

Answer:

Step-by-step explanation:

-3/4y - 1/5y = 380 can be simplified to -19/20y = 380.

In order for the student to incorrectly get 361, they likely just multiplied the 380 by 19/20 rather than multiplying by the reciprocal (which would be -20/19).

This means the best answer should be B.

5 0

3 years ago

Prove that the value of the expersion y^2-10y+30 can only be a positive number

sergeinik [125]

Answer:

See below

Step-by-step explanation:

y² - 10y + 30 =
y² - 10y + 25 + 5 =
(y - 5)² + 5

<u>Since (y - 5)² ≥ 0, the expression above is positve:</u>

(y - 5)² + 5 ≥ 5

5 0

3 years ago

Read 2 more answers

If the typical balance on Lucy's credit card is $650 and the interest rate (APR) on her credit card is 18%, how much in interest

Mariana [72]

$9.75

<h3>Further explanation </h3>

Given:

The typical balance on Lucy's credit card is $650.
The interest rate (APR) on her credit card is 18%.

Question:

How much in interest would you expect Lucy to be charged in a typical month?

The Process:

This problem includes the type of determining simple interest.

$\boxed{ \ I = P \times r \times t \ }$

where,

I = simple interest
P = principal (initial amount)
r = annual interest rate
t = time (in years)

This time we will find out how much in interest we would expect to be charged in a typical month.

The data is as follows:

P = 650
r = 18% or $\frac{18}{100}$ or 0.18
t = $\frac{1}{12}$ year (one month)

Let us calculate how much in interest we would expect to be charged in a typical month.

$\boxed{ \ = 650 \times \frac{18}{100} \times \frac{1}{12} \ }$

$\boxed{ \ = 65 \times \frac{3}{10} \times \frac{1}{2} \ }$

$\boxed{ \ = \frac{195}{10} \times \frac{1}{2} \ }$

$\boxed{ \ = \frac{97.5}{10} \ }$

$\boxed{ \ = \frac{975}{100} \ }$

Thus the amount of interest we would expect Lucy to be charged in a typical month is $ 9.75.

_ _ _ _ _ _ _ _ _ _

Notes

We must be able to distinguish between simple and compound interest. Please learn about this in the link attached below.

<h3>Learn more </h3>

What interest (in dollars) does he receive annually? brainly.com/question/8192969
How much will our account accrue to in 9.5 years brainly.com/question/4127036
What is the total amount owed at the end of the 4 years brainly.com/question/13675435

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3 years ago

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The first 3 terms of n+5 3n -1​

The first 3 terms of n+5 3n -1