Answer:
3.5588 x 10⁸
Step-by-step explanation:
(3.1 x 10³) (1.148 x 10⁵) = (3.1 x 1.148) (10³ x 10⁵)
= 3.5588 x 10⁸
50/100 + 70x / 100 = (5 + x) * 22/100
50 + 70x = <span>(5 + x) * 22
50 + 70x = 110 + 22x
48x = 60
х = 1 1/4 = 1,25</span>
The formula for that area would be A=1/2xbxh so you would do A=1/2x3.5x3 and that equals 5.25