X/7 = 40/30 give the value of x

The sum of real numbers x and y is 21. Their differnce is 15. What is the value of xy?

Based on the lesson, which of the following would be the best approach for solving this system by substitution? 5x = y + 6 2x - 3y = 4 Solve the first equation for x. Solve the first equation for y. Solve the second equation for x.

Y = 10 when x = 2 find y when x = 3

Which is the equation for the line that passes through (3,5) and has a slope of - 5

Miss Penny inherits £910. She decides to save some of the money and spend the rest. The ratio of savings to spending money is 7:6 How much does she save and how much does she spend? Savings £ [2] Spending money £ [2]

Barry knows that 6+5=11 what other addition fact does he know?

If x=2 y=9 and z=-5 what is 2 (y+z) (y+z) 3 and (x+y) 2

Which shows a way to take apart 8? 9-9=0 or 9-8=1 or 8-1=7 or 8+8=16 which one

4 batches of punch each batch has 16 fluid oz lemon juice and 4 pints of orange juice if each serving is 1 cup how many servings did it make all together

Apply the law of syllogism to write a new statement based on the following: A → B: If it rains, then football practice will be canceled. B → C: If football practice is canceled, then Patrick will go to the cinema.