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2 years ago

P=$400 r=9% t=.25 years what is i

Mathematics

1 answer:

Lapatulllka [165]2 years ago

4 0

Step-by-step explanation:

Using formula,

I = PRT/100

Where,

P = $400
R = 9%
T = 25 years

⟼ I = 400 × 9 × 25 / 100

⟼ I = $900

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Answer:

Estimations of π/4:

100 points: 0.75

1,000 points: 0.768

10,000 points: 0.7819

Step-by-step explanation:

To get an estimate of π/4 you can place random points in the square [0, 1] × [0, 1] and estimate it as the ratio of the points that landed inside the unit circle to the total number of points (because the ratio of the area of the circle to the area of the square is π/4).

We do it for 100 xy points and we get:

Point inside the circle area = 75

Estimation of π/4 = 0.75

$\pi/4\approx=\dfrac{\text{points inside circle area}}{\text{total points}}=\dfrac{75}{100}=0.75$

We do it for 1,000 xy points and we get:

Point inside the circle area = 768

Estimation of π/4 = 0.768

$\pi/4\approx=\dfrac{\text{points inside circle area}}{\text{total points}}=\dfrac{768}{1000}=0.768$

If we do it fo 10,000 xy points, we get

Point inside the circle area = 768

Estimation of π/4 = 0.768

$\pi/4\approx=\dfrac{\text{points inside circle area}}{\text{total points}}=\dfrac{7819}{10000}=0.7819$

The value of π/4 (4 decimals) is 0.7854.

The simulation gets more precise with the increase in the number of points.

The spreadsheet and the graphs are attached.

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4 years ago

Keith has $500 in a savings account at the beginning of the summer. He wants to have at least $200 in his account by the end of

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Answer:

x≤30

Step-by-step explanation:

he can spend no more than $30 a week

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3 years ago

What is the perimeter of a rectangle with a length of 2x + 4 and a width of 4x?

Helen [10]

I'll leave the picture to you; draw a rectangle and write 2x+4 along the length and 4x along the width. We don't really know the aspect ratio of the rectangle until we know x so any rectangle is fine.

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p = (2x + 4) + 4x + (2x + 4) + 4x

Answer: p = 12x + 8

7 0

4 years ago

Read 2 more answers

Find the slope of the line that passes through the points (2,-20) and (1,-20).

amm1812

Answer:

$\displaystyle m=0$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Coordinates (x, y)
Slope Formula: $\displaystyle m=\frac{y_2-y_1}{x_2-x_1}$

Step-by-step explanation:

Step 1: Define

Point (2, -20)

Point (1, -20)

Step 2: Find slope m

Simply plug in the 2 coordinates into the slope formula to find slope m

Substitute in points [Slope Formula]: $\displaystyle m=\frac{-20+20}{1-2}$
[Fraction] Subtract/Add: $\displaystyle m=\frac{0}{-1}$
[Fraction] Divide: $\displaystyle m=0$

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MakcuM [25]

Here's the general formula for bacteria growth/decay problems

Af = Ai (e^kt)

where:
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t = time

But there's another formula for a doubling problem.
kt = ln(2)

So, Colby (1)
k1A = ln(2) / t
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So, Jaquan (2)
k2A = ln(2) / t
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We need to use the rate of Colby and Jaquan in order to get the final amount in 1 day or 24 hours.

Af1 = 50(e^0.34657(24))
Af1 = 204,800

Af2 = 204,800 = Ai2(e^0.23105(24))
Af2 = 800

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3 years ago