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Charles has been asked to insert a trapezoid in the floor tiling of the rotunda of the courthouse. One base must be 8 feet and the height must be 10 feet. Write an equation for the area.
 one year ago
 one year ago
Charles has been asked to insert a trapezoid in the floor tiling of the rotunda of the courthouse. One base must be 8 feet and the height must be 10 feet. Write an equation for the area.
 one year ago
 one year ago

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spidergirl51Best ResponseYou've already chosen the best response.0
algebra 1 equations
 one year ago

gallaxharBest ResponseYou've already chosen the best response.1
http://www.mathopenref.com/trapezoidarea.html
 one year ago

gallaxharBest ResponseYou've already chosen the best response.1
so, area = (8 feet + x feet / 2) * 10
 one year ago

gallaxharBest ResponseYou've already chosen the best response.1
\[a=(\frac{ 8+x }{ 2 }) * 10\]
 one year ago

spidergirl51Best ResponseYou've already chosen the best response.0
If Charles wants the area of the trapezoid to be 65 square feet, what should be the measure of the second base?
 one year ago

gallaxharBest ResponseYou've already chosen the best response.1
just plug 65 into a, sorry I was AFK
 one year ago

gallaxharBest ResponseYou've already chosen the best response.1
\[65 = ((8+x)/2)∗10\]
 one year ago

gallaxharBest ResponseYou've already chosen the best response.1
x will be the second side
 one year ago

spidergirl51Best ResponseYou've already chosen the best response.0
so idk what to do first
 one year ago

spidergirl51Best ResponseYou've already chosen the best response.0
so whats the first step
 one year ago

gallaxharBest ResponseYou've already chosen the best response.1
Solve for x: 65 = 5 (8+x) Divide both sides by a constant to simplify the equation. Divide both sides of 65 = 5 (8+x) by 5: 8+x = 65/5 Use long division to simplify 65/5. 5  1  3  6  5   5   1  5   1  5   0: 8+x = 13 Isolate terms with x to the left hand side. Subtract 8 from both sides: x+(88) = 138 Look for two terms that sum to zero. 88 = 0: x = 138 Evaluate 138. 138 = 5: Answer: x = 5
 one year ago
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