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3 years ago

Mathhhhhhhhhhhhhhhhhh

Mathematics

2 answers:

Mice21 [21]3 years ago

6 0

We need to find the points that are solutions, that is, the points that lie in the shaded region.

Let's try the ordered pair (1,2). This isn't in the shaded region, so it is not a solution of the system.

The same goes for (-10, 10) and (-2,0).

But when you plot (0,10), it does lie in the shaded region, so it's a solution of the system of inequalities.

Alexxandr [17]3 years ago

5 0

Answer: (B) (-10, 10) and (D) (0, 10)

Step-by-step explanation:

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Solve the equation and enter the value of x below. -4x-13 = 51 X= Answer here

ololo11 [35]

Answer:

x = -16

Step-by-step explanation:

-4x - 13 = 51

-4x = 51 + 13

-4x = 64

x = -16

3 0

3 years ago

Factor the polynomial expression 16y^4 - 625x^4

Helga [31]

Answer:

(25x2 + 4y2) (5x + 2y) (−5x + 2y)

Step-by-step explanation:

Factor 16y4−625x4

−625x4 + 16y4

=(25x2 + 4y2) (5x + 2y) (−5x + 2y)

6 0

4 years ago

Find the volume of the sphere. Either enter an exact answer in terms N(Pi) Or ya 3.14 for N(pi)

xz_007 [3.2K]

Full Question:

Find the volume of the sphere. Either enter an exact answer in terms of π or use 3.14 for π and round your final answer to the nearest hundredth. with a radius of 10 cm

Answer:

The volume of the sphere is ⅓(4,000π) cm³ or 4186.67cm³

Step-by-step explanation:

Given

Solid Shape: Sphere

Radius = 10 cm

Required

Find the volume of the sphere

To calculate the volume of a sphere, the following formula is used.

V = ⅓(4πr³)

Where V represents the volume and r represents the radius of the sphere.

Given that r = 10cm,.all we need to do is substitute the value of r in the above formula.

V = ⅓(4πr³) becomes

V = ⅓(4π * 10³)

V = ⅓(4π * 10 * 10 * 10)

V = ⅓(4π * 1,000)

V = ⅓(4,000π)

The above is the value of volume of the sphere in terms of π.

Solving further to get the exact value of volume.

We have to substitute 3.14 for π.

This gives us

V = ⅓(4,000 * 3.14)

V = ⅓(12,560)

V = 4186.666667

V = 4186.67 ---- Approximated

Hence, the volume of the sphere is ⅓(4,000π) cm³ or 4186.67cm³

4 0

3 years ago

the printed matter on a 14 by 18 centimeter page of a book must covor 140 square centimeters. if all margins are to be the same

luda_lava [24]

Let
x----------------> width of the margin
we know that

[Area printed matter]=140
[Area printed matter]=[(14-2x)*(18-2x)]
then
[(14-2x)*(18-2x)]=140--------> (252-28x-36x+4x²)=140
(252-64x+4x²)=140----------> 4x²-64x+112=0

using a graph tool---------> I solve the quadratic equation
see the attached figure
x1=2
x2=14----------> is not solution

the answer is
the margin should be 2 cm

3 0

4 years ago

How to find the circular permutation for 5 things taken 5 at a time

dsp73

$\bf _nP_r=\cfrac{n!}{(n-r)!}\qquad \qquad _5P_5=\cfrac{5!}{(5-5)!}$

8 0

3 years ago