It is not a square, square has equal sides.
Using Pythagoras Theorem
a^2+b^2=c^2
(1.2)^2+(2.3)^2= c^2
c^2= 6.73
c= 2.594224354214569 (Negative value rejected, length cannot be negative)
Therefore the diagonal should be longer.
Hope it helps :)
Answer:
x^2 + 7x - 3 = 0
Step-by-step explanation:
I think you meant "width of the frame" from outside of frame to outside of mirror.
Let x represent the width of the frame.
Area of mirror is (3 ft)(4 ft) = 12 ft^2. Total area of mirror and frame is 15 ft^2. The 3 ft^2 difference is the area of the frame.
But you were asked to find a quadratic equation that would give you the "width" of the frame.
The "new" width would be 3 + x and the "new" height would be 4 + x.
Then the area of the mirror and frame together would be
A = (3 + x)(4 + x) = 15 ft^2, or
12 + 7x + x^2 = 15 ft^2, or
x^2 + 7x - 3 = 0. This is the desired quadratic equation.
When answer choices are given, please share them when you post a question. Thank you.
Answer:
6x + 12 < 10
Step-by-step explanation:
The side 10 is greater than 6x+12
9/2x-15/2 that is the answer
Well, if 27 cars make up 60% of his entire collection, so you'd want to change 60% into a decimal, which would make it .6. Then, you'd want to divide .6 by 27. You should hopefully get 45 as your answer.
Hopefully that helped! :)
