The bed of a truck is stacked with with boxes of paper. the boxes are stacked 5 boxes deep by 4 boxes high by 4 boxes across
when the driver is in the truck, the mass is 2948.35 kilograms.
the mass of 1 box of paper is 22.5 kilograms
the driver delivers some of the boxes of paper at his first stop.
the truck has to drive over a bridge on the way to the next stop.
trucks with a mass greater than 4700 kilograms are not allowed over the bridge

what is tue minimum number of boxes of paper the driver must deliver at the first stop to be allowed to drive over the bridge

3

Step-by-step explanation:

The boxes are stacked 5 boxes deep by 4 boxes high by 4 boxes across, then there are boxes in total.

The mass of 1 box of paper is 22.5 kilograms, so 80 boxes weigh kilograms.

When the driver is in the truck, the mass is 2948.35 kilograms, then the total mass is

Let n be the number of boxes of paper the driver must deliver at the first stop. Their weigth is 22.5n kg and the weight of the truck without n boxes is

Trucks with a mass greater than 4700 kilograms are not allowed over the bridge, thus

Hence, the driver must deliver at least 3 boxes at the first shop.

step-by-step explanation:

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statement #3: proof- ang is congruent to ang ecd : angles are congruent.  

step-by-step explanation:

1: the missing angles in statement #3  

a.) acb  

reason- the reason why the answer is acb is because angle ecd and angle acb are both the same size *that's what the word congruent means this is really simple.  

2: the missing word in reason #3  

c.) vertical  

reason- the reason why the answer is vertical is because the angles in that diagram on figure 2 is slanted, which is vertical, and the e and a both lay on vertical lines. along with the other's, but e and a are the 2 main points you want to focus on. and c is kind of like your starting point, because c is for both angles, not just one.  

i hope that was and understanding.