Help me solve this problem please

The student's measurement was off by an absolute error of

|2.9 cm - 2.6 cm| = 0.3 cm

The percent error in the measurement is the absolute error divided by the actual length of the string,

(0.3 cm) / (2.9 cm) ≈ 0.103 = 10.3%

-7

step-by-step explanation:

x^2 + 18x + 74 = (x + 9)^2 - 81 + 74

= (x + 9)^2 - 7.

so q = -7.

step-by-step explanation:

hans did not square the 40-unit side; he merely multiplied it by 2.   incorrect.