A rectangle has a perimeter of 38 inches. The long side of the rectangle is one less than three times the length of the short side. What is the area of the rectangle?
Answers
Answer:
بطششطنجف. نھچ بجھش. جےچ جےدشطبجفشچ نجفچ نجد. نھچ. نجفش. نھفس. نھدشط نج. ا
Answer:
The following is the breakdown to the solution of your question...
English: Write given important information
Math:
perimeter is 38 inches
width = w
length = 4w - 6
English: set up equation to find the width (w)
Math:
perimeter is = w + w + l + l
w + w + 4w - 6 + 4w - 6 = 38
English: Combine like terms
Math:
10w - 12 = 38
English: Add 12 to both sides
Math:
10w -12 + 12 = 38 + 12
10w = 50
English: Divide both sides by 10
Math:
10w ÷ 10 = 50 ÷ 10
w = 5
English: substitute w = 5 to solve for l (length)
Math:
l = 4w - 6
l = 4(5) - 6
l = 20 - 6
l = 14
English: check
Math:
p = l + l + w + w
p = 14 + 14 + 5 + 5
p = 38 Check
English: substitute l = 15 and w = 5 into formula for area of a triangle (l * w)
Math:
A = l * w
A = 14 * 5
A = 70 square inches
Step-by-step explanation:
if this help pls mark me brainliest