Ineed on a math problem . a billion students !
1) evaluate the expression 5x+6 for x =-2(whole #) 1/5
key # = number
grade= 7th grade
subject = math

Ageologist had two rocks on a scale that weighed 4.6 kilograms together.rock a was 0.5 of the total weight.how much did rock a weigh?

Acertain volume of water contains 100000 hydrogen atoms and 50,000 oxygen atoms how many hydrogen atoms are in a volume of water containing 4 million oxygen atoms

Plz ( true - false) all triangles have interior angles whose measure sum to 90.