Answer:
z=-21
Step-by-step explanation: (9-3)/2=(6+z)/5
We move all terms to the left:
(9-3)/2-((6+z)/5)=0
We add all the numbers together, and all the variables
-((z+6)/5)+6/2=0
We add all the numbers together, and all the variables
-((z+6)/5)+3=0
We multiply all the terms by the denominator
-((z+6)+3*5)=0
We calculate terms in parentheses: -((z+6)+3*5), so:
(z+6)+3*5
We add all the numbers together, and all the variables
(z+6)+15
We get rid of parentheses
z+6+15
We add all the numbers together, and all the variables
z+21
Back to the equation:
-(z+21)
We get rid of parentheses
-z-21=0
We add all the numbers together, and all the variables
-1z-21=0
We move all terms containing z to the left, all other terms to the right
-z=21
z=21/-1
z=-21
Answer:
the last one
Step-by-step explanation:
.................
That's true; the Law of Cosines works with all triangles. With right triangles it simplifies to the Pythagorean Theorem.
Answer:
-23.3
Step-by-step explanation:
Given:
a = 3, b = -2, c = 5. 1
Equation;
2a + 3b - 3c + 4b
Find:
Solution
Computation:
2a + 3b - 3c + 4b
2(3) + 3(-2) - 3(5.1) + 4(-2)
6 - 6 - 15.3 - 8
-23.3
