Question 1045436
1.The length of a rectangle is one more than four times its width. If the perimeter of the rectangle is 62 meters, find the dimensions of the rectangle.
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P = 2W + 2L = 62
W + L = 31
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L = 4W+1
Sub for L
W + 4W+1 = 31
5W = 30
W = 6, L = 25
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2. Kelly, Laura, and Tia sold boxes of cookies for a fundraiser. Kelly sold 15 boxes less than Laura. Tia sold twice as many boxes as Kelly. If they sold 83 boxes in total, how many boxes did each girl sell?
K = L - 15
T = 2K = 2L - 30
K + L + T = 83
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L-15 + 2L-30 + L = 83
4L - 45 = 83
L = 32
etc.
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3. The measure of the vertex angle in an isosceles triangle is six less than four times the measure of a base angle. Find the measure of the vertex angle.
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There are 2 base angles.
B + B + V = 180
V = 4B - 6
Can you do the rest?