Each box contains 4 toys; a 5-ounce truck and three bags of marbles. The bags of marbles are all identical. How much does each bag of marbles weigh

15 ounces

Step-by-step explanation:

Each box contains 4 toys; a 5-ounce truck and three bags of marbles. The bags of marbles are all identical. How much does each bag of marbles weigh?

We need the total weight of the box. This is not given in the question, hence:

Let us assume

The total weight of the = 50 ounces

A 5-ounce truck and three bags of marbles.

Let the weight of one bag of marble = x

Hence,

5 ounces +3x = 50 ounces

3x = 50 ounces - 5 ounces

3x = 45 ounces

x = 45 ounces/3

x = 15 ounces

Therefore, the weight of each bag of marble is 15 ounces

step-by-step explanation: a reaction is first order. if the initial reactant concentration is 0.0200 m, and 25.0 days later the concentration is 6.25 x 10-4 m, then its half-life is:

13

step-by-step explanation:

169-1=168

168-3=165

165-5=160

160-7=153

153-9=144

144-11=133

133-13=120

120-15=105

105-17=88

88-19=69

69-21=48

48-23=25

25-25=0

since it took 13times to completely subtract it hence its square root is 13