Answer:
10x + 12 and 6x² + 11x - 7
Step-by-step explanation:
The perimeter (P) of a rectangle is calculated as
P = 2l + 2w ( l is length and w is width )
= 2(2x - 1) + 2(3x + 7) ← distribute parenthesis
= 4x - 2 + 6x + 14 ← collect like terms
= 10x + 12
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The area (A) of a rectangle is calculated as
A = lw
= (2x - 1)(3x + 7) ← expand using FOIL
= 6x² + 14x - 3x - 7 ← collect like terms
= 6x² + 11x - 7
Answer:
45 miles
Step-by-step explanation:
Use the Pythagorean Theorem. Imagine a line connecting the ends of the right angle you made by driving. It would make a right triangle. You are trying to find the hypotenuse. Use the formula 
. Square 27, or multiply 27 by 27, to get 729. Add this to the square of 36, 1296. So 
= 2025. Find the square root of 2025. 
= 45. Hope this helped ^^
Answer:
Step-by-step explanation:
Divide both sides by 9 to isolate x:
Hope this helps!
Was this typed right????????????
Answer:
the first one
Step-by-step explanation:
