PLZ HELP I WILL GIVE BRAINLIEST

1.) The population of a certain city decreased by 10,000 people.
Write a signed number to represent this population change.

2.) A car corporation produced 520 fewer cars this month than last.
Write a signed number to represent this month's change in production

Can (2,3 and square root 10) be sides ona right triangle?

You are making a battery for a science project. you have copper wire for your first electrode. you need to choose a conductor, a second electrode, and a device to plug into your battery. you have already chosen a lemon conductor. complete each statement below about the options that include a lemon conductor.

In the given triangle, ∠aed ∼ ∠ abc, ad = 6.9, ae = 7.2, de = 5.2, and bc = 10.2. find the measure of bd and ce. round your answer to the nearest tenth.