7.
Solve for x:
x^4-5x^2+4 = 0

You put the following items into your rucksack. ham 600 g cheese 380 g tomatoes 270 g how much do all the ingredients weigh in total?

Weak battery is considered to be a part of routine a. inspection b. wear and tear c. maintenance d. check

Point r divides in the ratio 1 : 5. if the coordinates of e and f are (4, 8) and (11, 4), respectively, what are the coordinates of r to two decimal places?