Contemporary American building bricks are rectangular blocks with the standard dimensions of about 5.7 cm by 9.5 cm by 20.3 cm.What is the volume to the nearest tenth of a unit.

Answers

Answer 1

Answer: $a=5.7m;\n\nb=9.5m\n\nc=20.3m\n\nV=abc\n\nV=5.7\cdot9.5\cdot20.3=1099.245\ (m^3)\approx1099.2\ (m^3)$

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Find the value of (3 4)2.

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(3 + 4)^2 = (7)^2 = 49

the length of the base of a triangle is twice its height. if the area of the triangle is 4 square kilometers, find the height

Answers

The height of the triangle is 2 kilometer.

A triangle is a 3-sided polygon. The sum of the angles in a triangle add up to 180 degrees. The sides of a triangle are the length, base and the hypotenuse.

The area of a triangle = $(1)/(2)$ × base × height

Let:

t represent the height of the triangle.

Base = 2 x t = 2t

Area = 4

4 = $(1)/(2)$ × 2t x t

Multiply both sides of the equation by 2

8 = 2t²

Divide both sides by 2

4 = t²

Find the square root of both sides of the equation

t = 2 kilometer.

To learn more, please check: brainly.com/question/24865193?referrer=searchResults

let the height = x

Base = 2x

Area of triangle = (1/2)*base*height

Area = (1/2)*2x*x = 4

x² = 4

x = √4

x = 2

Height = 2 km.

Simplify the expression
4r-7r +8+ r

Answers

Answer:

-2r+8

Step-by-step explanation:

4r-7r+8+r

5r-7r+8

-2r+8

The first step is to combine like terms. These would be 4r, -7r, and r since they have the same variable. This gives you -2r. Since there are no other like terms to combine, you end up with -2r+8

Please help me w/ this geometry question.

image attached.

Answers

$The \: answer \: is \: 46 °$

Line BC reflects about a line such that N is the reflection of B and O is the reflection of C. Point N is shown on the coordinate plane, but point O is not. What will the coordinates of point O be?(1, 5)
(3, 5)
(5, 5)
(6, 5)
(5,5)
(3,5)

Answers

If the line BC reflects about a line and point N( 3, 5 ) is the reflection of point B ( 3 , 7 ) then the reflection of C ( 5, 7 ) is O ( 5 , 5 ).
Answer: C ) ( 5, 5 )

Answer:

(5,5)

Step-by-step explanation:

Given that B has coordinates as (3,7) When reflected about a line the new coordinates are (3,5)

This implies that by reflection x coordinate remains the same but y reduced by 2 units.

Apply the same logic for unknown O.

C is reflected to O.

Original coordinates of C are (5,7)

Hence new coordinates i.e. that of O would be

x coordinate same as 5

y coordinate 2 less = 7-2 = 5

COordinates of O are (5,5)