The 3rd significant figure is 8 so we add 1 to the 2nd sig fig
answer is 2700
Answer:
- No, it does not, because the segments do not have the same length.
Explanation:
The segment AB is supposed to be copied.
The correct procedure is:
- Put the tip of the compass on the point A
- Open the compass till the point B
- Without changing the width of the compass, put the tip of the compass on point C.
- Draw an arc from C.
- Draw a line from C until a point in the arc.
- Mark and label the point of intersection as D.
- Done.
Doing that, the length of the new segment CD equals the length of the segment AB.
The first answer is A because (b+6) represents the sidewalk length. (With the pool length and the two corners, which equal 3 ft each.) Then, the sidewalk width would be (h+6) for the same reason. Multiply them and get the pool area plus the sidewalk area. But you only need the sidewalk area so you would subtract the pool area from the whole area, to get (b+6)(h+6)-bh, or A in the end.
Unfortunately, I do not know the answers to the rest of the problems. I still hope this helped though!
Given:
The system of equations is
...(i)
...(ii)
To find:
The number that must be multiplied with the second equation to eliminate the y-variable.
Solution:
Coefficient of y variable in equation (i) is 3 and in equation (ii) is -1.
To eliminate y-variable the absolute value of coefficients of y-variables should be same.
So, we need to multiply the second equation by 3 to eliminate the y-variable
Multiplying equation (ii) by 3, we get
...(iii)
Adding (i) and (iii), we get
Divide both sides by 7.
Put x=12 in (i).
Divide both sides by 10.
Therefore, x=12 and y=10.
