I'm being the weight of jacob’s backpack is made up of the weight of the contents of the backpack as well as the weight of the backpack itself. seventy percent of the total weight is textbooks. his notebooks weigh a total of 4 pounds, and the backpack itself weighs 2 pounds. if the backpack contains only textbooks and notebooks, which equation can be used to determine t, the weight of the textbooks? 0.7(t) = t – 4 – 2 0.7(t) = t + 4 + 2 0.7t(4 + 2) = t 0.7(t + 4 + 2) = t

Option D.

Step-by-step explanation:

From the given information, we have

Weight of notebooks = 4 pound

Weight of backpack itself = 2 pound

Let t be the weight of the textbooks.  

Total weight = Weight of the textbooks + Weight of notebooks + Weight of backpack itself

Total weight =

Seventy percent of the total weight is textbooks.  

Therefore, the correct option is D.

4sqrt5

step-by-step explanation:

the base has dimensions of 8 x 4, so the diagonal is 64 + 16 square rooted or 4sqrt5.

it is a. 4.2 because 7.6-3.4 gets the remaining length of 4.2. i might be wrong but i am pretty sure this is the answer.