Answer:
B. 5a + 10
Step-by-step explanation:
Given:
5(a+2)
Open parenthesis
5(a+2)
= 5a + 10
A. 5a + 2
Wrong option
B. 5a + 10
Correct option
C. a + 10
Wrong option
D. 5 + (a + 2)
= 5 + a +2
= a + 7
Wrong option
Answer: the length of each of the two equal sides is 25 centimeters
Step-by-step explanation:
Let x represent the length of each of the two equal sides. This means that the total length of the two longer sides is 2x.
Let y represent the length of the third side.
The perimeter of a triangle is expressed as the sum of the length of each side of the triangle. The perimeter of the isosceles triangle is 65 centimeters. It means that
2x + y = 65 - - - - - - - - - 1
Each of the equal sides is 10 centimeters longer than the third side. This means that
x = y + 10
Substituting x = y + 10 into equation 1, it becomes
2(y + 10) + y = 65
2y + 20 + y = 65
2y + y = 65 - 20
3y = 45
y = 45/3 = 15
Substituting y = 15 into x = y + 10, it becomes
x = 15 + 10 = 25
Answer:
The answer is B
Step-by-step explanation:
$2.50+$1.95=$27.46
-2.50
24.69
24.63/1.95
equal $12.80 or 12.8
The answer would be (4,-1)
Hope this helped! :)
The volume is very simple, is simply the product of the 3 dimensions, the length*width*height, so namely is 4*2*3.
now, how much material? well, that'd be the surface area, check the picture below. So the container is really just 6 rectangles stacked up to each other at the edges.
left and right, two 2x3 rectangles.
top and bottom, two 4x2 rectangles.
front and back, two 4x3 rectangles.
get the area of each, sum them up, and that's the surface area of the rectangular prism, and therefore that's how much material was used.