Combine like terms to simplify the expression: Enter any coefficients as simplified proper or improper fractions or integers. 2/5k - 3/5 + 1/10k

By what percent will the product of two numbers change, if the first number increases by 70%, while the second number decreases by 40%.

The measure of the angles supplement is 30 more than four times that of its complement. find the measure of the angle described

Which statements are true for invasive species? 1. they always stabilize an ecosystem. 2. they’re always successful in adjusting to a new habitat. 3. they often compete with the native species for resources. 4. they have the ability to displace the native species. 5. they’re always pests.