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3 years ago

Amber wrote a computer program that generates two random numbers

Mathematics

2 answers:

stiv31 [10]3 years ago

4 0

I think shes right probably i might be wrong

dusya [7]3 years ago

4 0

Answer:

2/24

Step-by-step explanation:

just trying to help but it might be wrong

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PLEASE HELP!!!!

wel

Answer:

Mike is not right

Step-by-step explanation:

we know that

If two figures are similar, then the ratio of its surface areas is equal to the scale factor squared

Let

z----> the scale factor

x----> surface area of the enlarged rectangular prism

y-----> surface area of the original rectangular prism

$z^{2}=\frac{x}{y}$

In this problem we have

$z=2$

substitute

$2^{2}=\frac{x}{y}$

$4=\frac{x}{y}$

$x=4y$

The surface area of the enlarged rectangular prism is 4 times the surface area of the original rectangular prism

therefore

Mike is not right

<em>Verify with an example</em>

we have a rectangular prism

$L=5\ m$

$W=2\ m$

$H=3\ m$

The surface area of the prism is equal to

$SA=2(LW)+(2L+2W)H$

substitute the values

$SA=2*(5*2)+(2*5+2*2)*3=62\ m^{2}$

If he doubles each dimension of any rectangular prism

then

the new dimensions will be

$L=5*2=10\ m$

$W=2*2=4\ m$

$H=3*2=6\ m$

The new surface area will be

$SA=2*(10*4)+(2*10+2*4)*6=248\ m^{2}$

$248/62=4$

therefore

The surface area of the enlarged rectangular prism is 4 times the surface area of the original rectangular prism

8 0

3 years ago

Product is -8 and sum is 2.<br> What are the two numbers

anygoal [31]

Step-by-step explanation:

Let the two numbers be x and y.

$\therefore \: xy = - 8...(1) \\ and \\ x + y = 2 \\ \\ \therefore \:x = 2 - y...(2)$

From equations (1) & (2)

$(2-y)y=-8\\\therefore \: 2y - y^2 = - 8\\\\\therefore \:y^2 - 2y-8=0\\\\\therefore \:y^2 - 4y+2y-8=0\\\\\therefore \:y(y - 4)+2(y-4)=0\\\\\therefore \:(y+2)(y - 4)=0\\\\\therefore \:(y+2)=0\:\: or\:\:(y - 4)=0\\\\\therefore \:y=-2\:\: or\:\:y =4\\\\ When \:\: y = - 2\implies x = 4\\\\When \:\: y = 4\implies x = - 2\\$

Thus, the two numbers are (4, - 2) or (-2, 4).

6 0

4 years ago

Please help quick please

levacccp [35]

Answer:

I think it is 33.3 feet I'm not sure .

4 0

3 years ago

On a 48 item practice test how many questions must Keonna answer correctly for a score of 90%

Butoxors [25]

For a score of 90% = 48 * 0.9 = 43.2
so, Keonna must answer 44 questions

6 0

4 years ago

Choose the possible descriptions of cross sections formed by the intersection of a plane and a rectangular prism.

xxMikexx [17]

Answer:

-rectangle

-triangle

-line segment

-point

Step-by-step explanation:

A rectangle is formed when the intercepting plane is parallel to two of the faces of the prism

A triangle is formed when the plane cuts the prism near only one vertex, it is not parallel to the faces and 3 edges are cutted

A line segment is formed when the plane "touches" only one edge of the prism

A point is formed when the plane "touches" only one vertex of the prism

8 0

3 years ago