Answer:
1st car is the answer to you question and even explanation is given.
Answer:
x = -7
Step-by-step explanation:
-x = 7 (Move variables to one side, already done in this case.)
(Divide both sides by -1. Do this to get the x by itself.)
x = -7 (Final Answer)
Any Votes, Thanks, and Brainlyest would be appreciated.
Answer: 8.5
Step-by-step explanation:
First, multiply 6 × 5 and carry the 30 to the tens column.
Then multiply 6 × 3 (= 18) and add the carried 3.
Next, place a zero in the ones column since the next step is to multiply 35 × 40.
Then multiply 4 × 5, carry 200 into the hundreds column.
expression represents the area of Dylan’s room
<h3><u>
Solution:</u></h3>
Given that,
Length of room = ![x^2 -2x+8](https://tex.z-dn.net/?f=x%5E2%20-2x%2B8)
Width of room = ![2x^2 + 5x - 7](https://tex.z-dn.net/?f=2x%5E2%20%2B%205x%20-%207)
To find: Expression that the area (lw) of Dylan’s room
Since bedroom is generally of rectangular shape, we can use area of rectangle
<em><u>The area of rectangle is given as:</u></em>
![\text {area of rectangle }=\text { length } \times \text { width }](https://tex.z-dn.net/?f=%5Ctext%20%7Barea%20of%20rectangle%20%7D%3D%5Ctext%20%7B%20length%20%7D%20%5Ctimes%20%5Ctext%20%7B%20width%20%7D)
Substituting the given expressions of length and width,
![area = (x^2 -2x+8)(2x^2 + 5x - 7)](https://tex.z-dn.net/?f=area%20%3D%20%28x%5E2%20-2x%2B8%29%282x%5E2%20%2B%205x%20-%207%29)
We multiply each term inside first parenthesis with each term inside the second parenthesis.
So it becomes,
![2x^4 + 5x^3 - 7x^2 -4x^3 -10x^2 +14x +16x^2 +40x - 56](https://tex.z-dn.net/?f=2x%5E4%20%2B%205x%5E3%20-%207x%5E2%20-4x%5E3%20-10x%5E2%20%2B14x%20%2B16x%5E2%20%2B40x%20-%2056)
Now combine like terms,
![2x^4 + x^3 - x^2 +54x - 56](https://tex.z-dn.net/?f=2x%5E4%20%2B%20x%5E3%20-%20x%5E2%20%2B54x%20-%2056)
Thus the above expression represents the area of Dylan’s room