Answer:
No.The answer should be -4.1
Step-by-step explanation:
1+4(3x-10)-12
5(3x-10)-12
15x-50-12
15x-62
x=-62/15
x=-4.1
Answer:
It is C.
Step-by-step explanation:
You divided 6.57 by 3
and 3 by 3
3 by 3 = 1
6.57 = 2.19
3 so for every 1 pound it costs $2.19
The weight of the air in the room is 172.8 lb if the dimensions of a living room are 18 ft. by 15 ft. by 8ft.
<h3>What is a rectangular prism?</h3>
It is defined as the six-faced shape, a type of hexahedron in geometry.
It is a three-dimensional shape. It is also called a cuboid.
It is given that:
The dimensions of a living room are 18 ft. by 15 ft. by 8ft.
The volume of the living room = volume of the cuboid:
V = length×width×height
V = 18×15×8
V = 2160 cubic ft
The weight of the air = 0.08 lb. per cubic foot
The weight of the air in the room = 0.08×2160
The weight of the air in the room = 172.8 lb
Thus, the weight of the air in the room is 172.8 lb if the dimensions of a living room are 18 ft. by 15 ft. by 8ft.
Learn more about the rectangular prism here:
brainly.com/question/21308574
#SPJ1
Answer:
- 5x²-2x+7+2x²+6x-9
- 5x²+2x²-2x+6x+7-9
- 7x²+4x-2
so, 7x²+4x-2 is yr answer.
hope it helps.
<h3>stay safe healthy and happy.</h3>
Area of rectangle is 
Step-by-step explanation:
Given:
Length of rectangle = 2x-9
Width of rectangle = x+5
Required:
Area of rectangle
Formula:
Putting values of length and width:
So, Area of rectangle is
Keywords: Area of rectangle
Learn more about Area of rectangle at:
#learnwithBrainly
