Find the Missing demension of each triangle described: 1. Height: 7in, Area: 21in square

2. Base: 11m, Area: 115.5 m square

3. Base: 14.2yd, Area: 63.9yd square

4. Height: 11cm, Area: 260.15cm square

Can someone answer this question? : )

Which of the following expressions is equal to 2x^2+8

Worth 100 points need the answers asap first row -x^2 2x^2 (x/2)^2 x^2 x is less than 2 x is greater than 2 x is less than or equal to 2 x is greater than or equal to 2 second row -5 -5/2 4 5 •2 is less than x& x is less than 4 •2 is less than or equal to x & x is less than or equal to 4 •2 is less than or equal to x& x is less than 4 •2 is less than x& x is less than or equal to 4