all angles add to 180, so add and solve for x. plug x into A and you get 50 degrees
The cost of installing an electric heating system for a 3- bedroom home is $5000 and the operating cost is $1,100 per year. A so
1 answer:
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Answer:
x = 1
Step-by-step explanation:
When there is a "-" (minus) sign in front of parenthesis, we distribute the sign inside. Let's do this with "-(x+1)". So we will have:
Now, we follow rules of algebra. We take variables to one side and numbers to another side (remember to change signs with changing sides). Shown below:
Now, we add like terms in left side. Such as:
ax + bx = (a+b)x
Thus, we have:
Now, we add right side and divide and get a value for x:
The value of x is 1