Two fifths of the senior class earned a grade of B + or higher on an advanced mathematics exam. If 42 seniors scored at least a B+, how many students are in the entire senior class?

Greatest common factor 48x^5,39x^6

What's in the middle between 275 and 310

Two sides of a triangle have lengths 10 and 18. Which inequalities describe the possible lengths for the third side x?

How do you write a rational number as a terminating decimal

If 4 is multiplied by a number decreased by 7, the product is 100. find the number.

To solve a system of equations by substitution what is the best first step

Which rational number does not have a reciprocal

What is the probability of rolling an odd number on a number cube and flipping a coin landing on tails? A) 1/6 B) 1/12 C) 1/4 D) 1/8

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The number Of households with VCRs in 1990 was about 87.5% of the number with VCRs in 1993. About how many households had VCRs in 1993? 1989 ~ 1 household 1985 ~ 18 households 1990 ~ 63 households 1995 ~ 77 households