Answer:
$200
Step-by-step explanation:
Here is the full question
You can upgrade lighting at your factory to LED bulbs that cost $6.95 each and last an average of 5 years. It costs $3 in labor to change a bulb. Over a 10-year period, about how much will it cost per year to install LED bulbs in 100 lamps and change the bulbs when they burn out?
in 10 years, the bulbs would be changed twice
Total cost incurred per bulb in 10 years = (6.95 + $3) x 2 = $19.90
Since there are 100 bulbs, total cost incurred would be - $19.90 x 100 = $1990
Cost per year = $1990 / (6.95 + $3) = $200
Answer:
Step-by-step explanation:
x = 3y
x + y = 180°
3y + y = 180° ⇒ y = <em>45° = a</em>
x = 3( 45° ) ⇒ x = <em>135° = b</em>
Let's simplify step-by-step.
<span>52−<span>8<span>(<span>n−1</span>)
</span></span></span>Distribute:
<span>=<span><span>52+<span><span>(<span>−8</span>)</span><span>(n)</span></span></span>+<span><span>(<span>−8</span>)</span><span>(<span>−1</span>)
</span></span></span></span><span>=<span><span><span>52+</span>−<span>8n</span></span>+8
</span></span>Combine Like Terms:
<span>=<span><span>52+<span>−<span>8n</span></span></span>+8
</span></span><span>=<span><span>(<span>−<span>8n</span></span>)</span>+<span>(<span>52+8</span>)
</span></span></span><span>=<span><span>−<span>8n</span></span>+60
</span></span>Answer:
<span>=<span><span>−<span>8n</span></span>+<span>60</span></span></span>
Answer:
In a paragraph proof, statements and their justifications are written in sentences in a logical order.
A two-column proof consists of a list statements and the reasons the statements are true.
A paragraph proof is a two-column proof in sentence form.
Step-by-step explanation:
- In a paragraph proof, statements and their justifications are written in sentences in a logical order.
- A two-column proof consists of a list statements and the reasons the statements are true.
- A paragraph proof is a two-column proof in sentence form.
A paragraph proof is only a two-column proof written in sentences. However, since it is easier to leave steps out when writing a paragraph proof.
A two-column geometric proof consists of a list of statements, and the reasons that we know those statements are true. The statements are listed in a column on the left, and the reasons for which the statements can be made are listed in the right column
