The hinge theorem. Just think of the two sides being connecting by a "hinge"
Answer:
-25
Step-by-step explanation:
-40+15
5x + 6y = 7 SUBSTITUTION METHOD
2x + 2y = 4
5x + 6y = 7 Solve for either x or y in 1 of the 2 equations.
- 6y - 6y
-----------------------
5x = -6y + 7
----- ------ ----
5 5 5
x = -6/5y + 7/5
2(-6/5y + 7/5) + 2y = 4 Substitute the expression you got for x or y into
-12/5y + 14/5 + 2y = 4 the other equation.
-2/5y + 14/5 = 4
- 14/5 - 14/5
------------------------------
-2/5y = 6/5
-------- --------
- 2/5y - 2/5y
y = -3
5x + 6(-3) = 7 Plug in the value you got for y in step 2 into the
5x - 18 = 7 equation that you didn't use.
+ 18 + 18
------------------
5x = 25
--- -----
5 5
x = 5
(x,y) ⇒ coordinate
(5,-3) ⇒ final answer
Answer:
6,469!
Step-by-step explanation:
180-20=160
53-33=20
160*20=3,200
3,269+3,200=6,469
Given the area of the house and the basement, the basement accounts for 21.67 percent of the total square footage.
<h3>
What is Percentage?</h3>
Percentage is simply number or ratio expressed as a fraction of 100.
It is expressed as;
Percentage = ( Part / Whole ) × 100%
Given that;
- Area of the house = 2100ft²
- Area of the basement = 455ft²
- Percentage of area occupied by the basement = ?
Percentage = ( Part / Whole ) × 100%
Percentage = ( 455ft² / 2100ft² ) × 100%
Percentage = 0.21666 × 100%
Percentage = 21.67%
Given the area of the house and the basement, the basement accounts for 21.67 percent of the total square footage.
Learn more about Percentages here: brainly.com/question/24159063
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