Answer:
b=14
Step-by-step explanation:
have a nice day and stay safe:)
Answer:
x = 8
Step-by-step explanation:
30x = (60)(40)
30x = 240 Multiply 60 and 40
x = 8 Divide 30 from both sides
Solution: The missing reason in Step 8 is substitution of .
Explanation:
The given steps are used to prove the formula for law of cosines.
From step 5 it is noticed that our equation is
..... (1)
From step 7 it is noticed that the value of is .
So by substituting for in equation (1) we get the equation of step 8, i.e.,
Hence, the missing reason in Step 8 is substitution of .
d is the answer
Step-by-step explanation:
all work is shown and pictured
Answer:
A
Step-by-step explanation:
Because 45 + 2x = 180 divide it by 2 gives 4