2(w+2)-8w=-14 -- expand the brackets, multiply the term(s) outside the bracket by the term(s) inside the bracket.
2w+4-8w=-14 -- combine like terms
4-6w=-14 -- add 6w to both sides and add 14 to both sides
18=6w
3=w
<u>w=3</u>
Answer:
Is it 75
Step-by-step explanation:
Question 3
C(1, -7) D(-8, -7)
To find side length DC you count how many units are between the two points. C(1) D(-8) = 9 units
Question 1
Again count the points around the edge of the square. Since this shape is a rectangle, side length WX = YZ and side length XY = WZ.
WX = YZ = 11 units
XY = WZ = 15 units
Perimeter = WX + YZ + XY + WZ = 11(2) + 15(2) = 52 units
Because the scale factor is at the origin, you multiply all the coordinates by the scale factor:
Q(-3,7) = Q'(-3*3, 7*3) = Q'(-9,21)
R(-3,11) = R(-3*3, 11*3) = R'(-9,33)
S(4,11) = S'(4*3,11*3) = R'(12,33)
T(4,7) = T'(4*3, 7*3) = T'(12,21)