Round to the nearest tenth if necessary

Step-by-step explanation:

a=30

b= 17

c= 18

we actually already found angles B and C for the last problem I think we said 30 and 32 so we would be able to guess that angle A is about 118° but.. let's do the math... and see

angle A = arcCos[ b^2 + c^2 - a^2 / 2*b* c ]

A = arcCos[ 289 +324 - 900 / 2*17*18]

A = arcCos[ -287 / 612 ]

A = arcCos[ -0.468954 ]

A = 117.9664 °

ohh and we're off by 0.0336   phooy  :P soo far off... :P

rounding to nearest 10th

A = 118.0 °  ( ohh right on the money  :P)  yay, I feel better.  :P

Because there are 16 ounces in a pound, we can multiply 16 by 4 to get 64, there are 64 ounces of apples which is also the same as 4 pounds of apples. If 64 ounces of apples equals $5.60, and each apple is 4 ounces, we have to also divide 64 by 4 to find the number of apples. 64 divided by 4 is 16, so 16 apples for $5.60. To get the price PER apple, or for one apple, we have divide $5.60 by 16, which will give us $0.35, or $.35 per apple, which is actually a good price.