Which expression are equivalent to 2r+(t+r)

vfiekz [6]

Thats in polynomial form already in that order!
HOPE THIS HELPS!!
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3 0

3 years ago

A right triangular prism is shown. Find (A) the total surface area and (B) the volume. You must show formulas and your work.

enyata [817]

Hello!

We are going to use the rectangular prism of the image as a guide:

First of all, the AC segment is calculated using the Pythagoras' theorem:

$AC= \sqrt{ AB^{2}+ BC^{2} } =\sqrt{ 10^{2}+ 8^{2} }=12,81 m$

(A) The surface area of a prism is the sum of the surface areas of each face.

For the 2 triangles ABC and DEF

$A=2*(1/2*b*h)=2*(1/2*8m*10m)=80m$

For the ABEF Rectangle

$A=w*l=10,77m*10m=107,7m^{2}$

For the ACDE Rectangle

$A=w*l=10,77m*12,81m=137,96 m^{2}$

For the BCDF Rectangle

$A=w*l=10,77m*8m=86,16 m^{2}$

To finish you need to sum up the areas of each face:

$SA=2A_{ABC}+ A_{ABEF}+A_{ACDE}+A_{BCDF}= \\ 80 m^{2} +107,7m^{2} +137,96m^{2} +86,16m^{2} =411,82m^{2}$

(B) The volume of a prism is the product of the area of its base and the height of the prism. In this case, the base is a triangle so the formula and the calculations for the volume are as follows

$V= \frac{1}{2} *w*h*l= \frac{1}{2}* 8m*10m*10,77m=430,8m^{3}$

7 0

3 years ago

How to price estimate flooring installation?

WINSTONCH [101]

If you were to find the price estimate flooring for a room, you would first find the square measurements of the room. This means you need to fine the area of the room in feet. For example, you have a perfect square room with two sides that equal 15 ft. You multiply those two sides so the estimate square footage of the room is 300 square feet.

Depending on the price of the flooring you want, you then multiply the cost of the flooring by 300 square feet to get a estimated price.

I hope this helps!

3 0

3 years ago

The underlying rock ledge of Canada's horseshoe falls is cut back about 2 feet each year by erosion. Calculate how much the rock

SCORPION-xisa [38]

Hi There!

So the rock edge is cut back 2 feet each year by erosion and we have to figure out how much it will be cut back by 7 years using this knowledge so.

2 feet each year

2 + 2 + 2 + 2 + 2 + 2 + 2

or

7 x 2

=

14 so:

The Rock Ledge will have eroded 14 feet at the end of 7 years

4 0

3 years ago

Read 2 more answers

Express as a trinomial. .

AleksAgata [21]

Answer:

6x^2-17x-14

Step-by-step explanation:

See the steps below:)

7 0

3 years ago