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3 years ago

What is the factored form of x^2y^3 -2y^3 - 2x^2 +4

Mathematics

1 answer:

Law Incorporation [45]3 years ago

8 0

(-x^2+4)

x^2y^3-2y^3-2x^2+4=x^2-2x^2+4=

(-x^2+4)

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Please help would mean a lot

jarptica [38.1K]

Answer:

1/2

Step-by-step explanation:

output devided by input

3 0

3 years ago

Find the arc length of the partial circle.

ElenaW [278]

Answer:

38.485(correct to 5 significant figure)/ 12.25π

Step-by-step explanation:

$\pi(7 {}^{2} )( \frac{90degree}{360deree} )$

$= \pi(49)( \frac{1}{4} )$

=38.485(cor. to 5 sig.fig.)/ 12.25π

to find arc length of sector,we need to π(radius²)(sector's degree divided by 360 degree)

8 0

3 years ago

Find the lowest number divisible by 15, 20 & 25.

algol13

Answer:

300.

Step-by-step explanation:

This is the LCM.

15 = 3 * 5

20 = 2 * 2 * 5

25 = 5 * 5

One 5 appears in all 3 factors so we only use this once in the calculation:

LCM = 2 * 2 * 3 * 5* 5 = 300

6 0

4 years ago

What are the zeros of the function f(x) = x2 - 5x + 4?

stich3 [128]

To find the zeros set the equation equal to zero:

x^2 - 5x +4 = 0

Factor:

(x-4) (x-1) = 0

Now solve each set of parenthesis so that they equal zero:

(x-4) = 0, x =4

(x-1) = 0, x = 1

The zeros are 1,4

5 0

3 years ago

Let V be the volume of a right circular cone of height h=14 whose base is a circle of radius R=2. An illustration a right circul

Alla [95]

Answer:

The area of a horizontal cross section at a height is $\pi\times(2-\dfrac{y}{7})^2$

Step-by-step explanation:

Given that,

Height = 14 m

Radius = 2 m

Let V be the volume of a right circular cone

We need to calculate the value of R

Using given data

$\dfrac{h}{r}=\dfrac{h-y}{R}$

Put the value into the formula

$\dfrac{14}{2}=\dfrac{14-y}{R}$

$7R=14-y$

$R=2-\dfrac{y}{7}$

We need to calculate the area of a horizontal cross section at a height y

Using formula of area

$A=\pi R^2$

Put the value into the formula

$A=\pi\times(2-\dfrac{y}{7})^2$

Hence, The area of a horizontal cross section at a height is $\pi\times(2-\dfrac{y}{7})^2$

3 0

3 years ago