Height of the trapezoids = sqrt (17^2 - 8^2) = 15cms
base = 19 cms
(b) area of each trapezoid = 15/2 (35 + 19) = 405 cm^2
Total area painted blue = 2*405 = 810 cm^2
(c) length of the edges of one trapezoid = 35 + 19 + 2(17) = 88 cms
So one piece of sandpaper ( can sand up to 80 cm) will not be enough to sand all of the edges.
A. Negative ♡
Im pretty sure about this
Answer:
238 ft³
Step-by-step explanation:
Volume = Length × Width × Height
V = 8.5 × 4 × 7
V = 238 ft³
Simplifying
6y + 1 = 21y + 13
Reorder the terms:
1 + 6y = 21y + 13
<span>Reorder the terms:
1 + 6y = 13 + 21y
</span><span>Solving
1 + 6y = 13 + 21y
</span><span>Solving for variable 'y'.
</span><span>Move all terms containing y to the left, all other terms to the right.
</span><span>Add '-21y' to each side of the equation.
1 + 6y + -21y = 13 + 21y + -21y
</span><span>Combine like terms: 6y + -21y = -15y
1 + -15y = 13 + 21y + -21y
</span><span>Combine like terms: 21y + -21y = 0
1 + -15y = 13 + 0
1 + -15y = 13
</span><span>Add '-1' to each side of the equation.
1 + -1 + -15y = 13 + -1
</span>Combine like terms: 1 + -1 = 0
0 + -15y = 13 + -1
-15y = 13 + -1
Combine like terms: 13 + -1 = 12
-15y = 12
Divide each side by '-15'.
y = -0.8
<span>Simplifying
y = -0.8</span>
