The sum of a number and 20 is no more than the sum of the square of the number and 9.
which of the following inequalities can be used to determine this unknown number?
a. x + 20 < (x + 9)2
b.
x+ 20 x2 + 9
c.
x+ 20 = (x + 9)2
d.
x + 20 < x2 +94

What is the missing reason in step 5? linear pair postulategivendefinition of complementary anglescongruent complements theorem

Ariana starts with 100 milligrams of a radioactive substance. the amount of the substance decreases by 20% each week for a number of weeks, w. the expression 100(1−0.2)w finds the amount of radioactive substance remaining after w weeks. which statement about this expression is true? a) it is the difference between the initial amount and the percent decrease. b) it is the difference between the initial amount and the decay factor after w weeks. c) it is the initial amount raised to the decay factor after w weeks. d) it is the product of the initial amount and the decay factor after w weeks.

42. if 20 men can eat 200 kg of wheat in 40 days, then 10 men can eat 300 kg of wheat in how many days? a) 120 days b) 60 days c) 80 days d) none of these