What does h equal if 6h+7=-8-h? pleas explain and show steps thx(:

Blank × 10-3 is 2,000 times greater than 1.9 × 10-6. it is also blank times greater than 9.5 × 10-4.

The difference of two numbers is 40. find the numbers if 0.3 parts of one number is equal to 37.5% of the other one.

I’m confused on how to work the pie charts