Length = 2w +5
Area = l * w
63 = 2w +5 *w
63 = 2w² +5w
2w² +5w-63=0
(2w-9) (w+7)
2w-9 = 0 w+7=0
2w-9+9=0+9 w+7-7=0-7
2w =9 w= -7
2w/2=9/2
w= 4.5
Since the width can not negative the width is 4.5
Length = 2(4.5) + 5
Length =9 +5
Length = 14
Check
Area = 4.5 * 14
63 = 63
To solve this you have to divide 90 by 10 which would be 9 so
t=9
Hope it helps
Answer:
Step-by-step explanation:
C) x1/4y1/2
Since this is a right triangle, the Pythagorean Theorem can be used to find the missing side length. The Pythagorean Theorem is a² + b² = c², where c is the hypotenuse of the triangle.
The error is that the numbers were plugged into the theorem incorrectly - the hypotenuse is the side opposite the right angle (in this case, it is 8 ft). That means the c in a² + b² = c² should be substituted with 8, like so:
a² + b² = c²
6² + b² = 8²
Now that the numbers are substituted correctly, you may solve for the third side.
6² + b² = 8²
36 + b² = 64
b² = 28
b ≈ 5.29
Answer:
The third side length is approximately 5.3 feet.
