The power, P (watts), of a car engine is proportional to the square of its speed, s (m/s). When s=45, P=2180. Work out the speed (to 1 DP) when the power is 2320 watts

Maria donates a fixed amount, a, to a charity each month. if she donates $300 in 12 months, what is the equation for a? a. a + 300 = 12 b. a × 300 = 12 c. a × 12 = 300 d. a + 12 = 300 e. a + 32 = 100

Write the expression in complete factored form. 5n_(c - 3) - n(c - 3) =

Merrida uses a pattern in the multiplication table below to find ratios that are equivalent to 7: 9. if merrida multiplies the first term, 7, by a factor of 6, what should she do to find the other term for the equivalent ratio? multiply 9 by 1. multiply 9 by 6. multiply 9 by 7. multiply 9 by 9.