A triangle has side lengths of (5.1g−6.9h) centimeters, (6.4g−8.8k) centimeters, and (9.3k+3.4h) centimeters. Which expression represents the perimeter, in centimeters, of the triangle?−3.5h+0.5k+11.5g−1.8gh−2.4gk+12.7hk−12.3hk+20.8gk−5.4k+11.5g+2.4h
Q. A triangle has side lengths of (5.1g−6.9h) centimeters, (6.4g−8.8k) centimeters, and (9.3k+3.4h) centimeters. Which expression represents the perimeter, in centimeters, of the triangle?−3.5h+0.5k+11.5g−1.8gh−2.4gk+12.7hk−12.3hk+20.8gk−5.4k+11.5g+2.4h
Calculate Perimeter: To find the perimeter of the triangle, we need to add the lengths of all three sides together. The perimeter P is given by the formula:P=side1+side2+side3So, we will add the expressions for each side:(5.1g−6.9h)+(6.4g−8.8k)+(9.3k+3.4h)
Combine Like Terms: Now, we combine like terms. We will add the coefficients of g, subtract the coefficients of h, and add the coefficients of k: For g: 5.1+6.4=11.5For h: −6.9+3.4=−3.5For k: −8.8+9.3=0.5So, the combined expression is: 11.5g−3.5h+0.5k
Check Math: We check the math to ensure there are no errors in the calculation. The coefficients have been correctly added and subtracted according to their respective variables.
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