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3 years ago

2 1/8 × 1/3 estimate

Mathematics

1 answer:

horsena [70]3 years ago

4 0

2 1/8 × 1/3
= 17/8 × 1/3
= 17/24

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Find the distance between these points.W(-6, -8), X(6, 8) 20 10 √8

sineoko [7]

The distance between the two points is 20

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3 years ago

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The equation y = 1725 - 75x represents the amount of money y (in dollars) left in your lunch account after x weeks. 20 weeks go

garik1379 [7]

Y= -75x +1725
y= -75(20) +1725
y = -1500 + 1725
y= 225 = range
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-1500/-75 = -75x/-75
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3 years ago

I need help asap :);)

ValentinkaMS [17]

Answer:last choice x<3

Step-by-step explanation:

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-4h+6>-6

-6. -6

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3 years ago

Find the second derivative at the point (2,2), given the function below. 2x^4=4y^3

Bogdan [553]

The second derivative at the point (2,2) is 34/9

Explanation:

2x⁴ = 4y³

2x⁴ - 4y³ = 0

We first need to find dy/dx and then d²y/dx²

On differentiating the equation in terms of x

dy/dx = d(2x⁴ - 4y³) / dx

We get,

dy/dx = 2x³/3y²

On differentiating dy/dx we get,

d²y/dx² = 2x²/y² + 8x⁶/9y⁵

$\frac{d^2y}{dx^2} = \frac{2 X 2^2}{2^2} + \frac{8 X 2^6}{9 X 2^5}\\ \\\frac{d^2y}{dx^2} = 2 + \frac{16}{9}\\ \\$

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Therefore, the second derivative at the point (2,2) is 34/9

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3 years ago

The sides of a square all have a side length of y. Write a simplified area function in terms of y for a rectangle whose length i

gizmo_the_mogwai [7]

The simplified area function in terms of y for a rectangle is $f(y)=2 y^{2}+4 y$

Solution:

Given that length of each side of a square = y

Need to determine area of rectangle whose length is twice the length of the square and width is 2 units longer that the side length of square

Length of rectangle = twice of side length of square = $2 \times y = 2y$

Width of rectangle = 2 + side length of square = 2 + y = y + 2

$\text { Area of rectangle }=\text { length of rectangle } \times \text { width of rectangle.}$

On substituting length and width in formula for area, we get

$\text { Area of rectangle }=2 y \times (y+2)=2 y^{2}+4 y$

Hence function $f(y)=2 y^{2}+4 y$ is represents area of required rectangle.

3 0

3 years ago