Today robbie is carrying his history textbook and his lunch in his backpack. if the history textbook weighs 2 5/6 pounds and his lunch weighs 1 2/3 pounds, how much weight is in robbie's backpack?

Weight in Robbie backpack is pounds or 4.5 pounds

Solution:

Given that Today Robbie is carrying his history textbook and his lunch in his backpack.

To find: weight in Robbie's backpack

From given,

Weight of history book = pounds

Weight of lunch = pounds

weight in Robbie's backpack = Weight of history book + Weight of lunch

Convert the mixed fractions

Thus weight in Robbie backpack is pounds or 4.5 pounds

in simplified version   it would be x ≤-4

step-by-step explanation:

multiply each term in x ≤-4 by -1

the circumference of a circle is, 10.676 cm.

step-by-step explanation:

the formula for circumference of a circle is given by:

where

c is the circumference of a circle and

d is the diameter of a circle.

given: diameter(d) = 3.4 cm and use

substitute these values in [1] we get;

cm

therefore, the circumference of a circle is, 10.676 cm