63=21% of all
percent is parts out of 100
63=21/100 of all
times both sides by 100/21
6300/21=all
300=all
all-wednesday=thu+fri
300-63=thu+fri
137=thu+fri
they collected 137 cans on thursday and friday combined
Answer:
341 students
Step-by-step explanation:
Here, we are to calculate the number of students earning between a particular range of income.
Please check attachment for complete solution and step by step explanation
This seems to be referring to a particular construction of the perpendicular bisector of a segment which is not shown. Typically we set our compass needle on one endpoint of the segment and compass pencil on the other and draw the circle, and then swap endpoints and draw the other circle, then the line through the intersections of the circles is the perpendicular bisector.
There aren't any parallel lines involved in the above described construction, so I'll skip the first one.
2. Why do the circles have to be congruent ...
The perpendicular bisector is the set of points equidistant from the two endpoints of the segment. Constructing two circles of the same radius, centered on each endpoint, guarantees that the places they meet will be the same distance from both endpoints. If the radii were different the meets wouldn't be equidistant from the endpoints so wouldn't be on the perpendicular bisector.
3. ... circles of different sizes ...
[We just answered that. Let's do it again.]
Let's say we have a circle centered on each endpoint with different radii. Any point where the two circles meet will then be a different distance from one endpoint of the segment than from the other. Since the perpendicular bisector is the points that are the same distance from each endpoint, the intersection of circles with different radii isn't on it.
4. ... construct the perpendicular bisector ... a different way?
Maybe what I first described is different; there are no parallel lines.
Well showing that there are not at least as many apples and orages I would have to lean on the no answer
Short answer A
Answer:
x = 8.5
L = 17
W = 6.5
Step-by-step explanation:
P = 2*(L + W)
W = x - 2
L = 2x
P = 47
47 = 2 * (2x + x - 2)
47 = 2 * (3x - 2) Remove the brackets.
47 = 6x - 4 Add 4 to both sides.
47 + 4 = 6x - 4+4 Combine
51 = 6x Divide by 6
6x/6=51/6 Combine
x = 8 3/6 or 8.5
x = 8.5
========
L = 2*x
L = 2*8.5
L = 17
=====
W = x - 2
W = 8.5 - 2
W = 6.5
