-3.5 + 85.95 = 82.45 But how do you get that answer, what do you do?

I don't understand

Do you need to change the sign -/+?

Or do you need to change the negative?

Also if you want to answer this.

What do you do when adding two negatives?

For example, -34.78 + (-29.45)

Please help, Thank you.

Mercury poisoning is dangerous overload of mercury within the body. a major source of mercury within the body, a major source of mercury poisoning is consuming fish that contain mercury. certain fish are more prone to having higher levels of mercury than others. the pie chart shows the distribution of four breeds of fish at a hatchery. the hatchery has approximately 6,000 fish. a biologist from the centers for disease control and prevention randomly test 5% of each breed of fish for mercury content. her findings are shown in the following table. based on the biologist's findings, if a single salmon is randomly selected from those that were tested, what is the probability that this particular fish would have a dangerous mercury level? a) 0.001 b) 0.004 c) 0.02 d) 0.08

Which table shows a proportional relationship between miles traveled and gas used?

Secant be and cf intersect at point d inside a what is the measure of cde