For the entirety of this problem, let A=(1,5,1)A=(1,5,1), B=(7,8,3)B=(7,8,3), and C=(-2,4,1)C=(−2,4,1). a) (9 points) Find the area of triangle ABCABC. b) (5 points) Find the equation of the plane containing triangle ABCABC. Write your answer in the form ax+by+cz=dax+by+cz=d. c) (9 points) Determine the acute angle made by the plane you found in part (b) and the xzxz-plane. You may leave your answer in terms of an inverse trig functions.

the 2 figures are congruent bc if you reflect abcd over the y axis then over the d axis the figures overlap

step-by-step explanation:

if you want to solve percent error follow these steps.

1. subtract the accepted value from the experimental value.

2. take the absolute value of step 1.

3. divide that answer by the accepted value.

4. multiply that answer by 100 and add the % symbol to express the answer as a percentage.

if you want to solve percent of change just do this.

1. work out the difference (increase) between the two numbers you are comparing.

2. divide the increase by the original number and multiply the answer by 100. if your answer is a negative number then this is a percentage decrease.

hope this : )

yes

step-by-step explanation:

13

step-by-step explanation:

divide the cost of the total of sodas you bought by the cost of one soda, for example:

$24.57 divided by $1.89 is 13 which means you bought 13 sodas