What is the value of x in the proportion x + 1 / x+3 = 15 / 21

a. 4

b. 1/3

c. 1/4

d. 3

How to write y = 5/6x + 9 in standard form using integers

A 15 -ft by 15 -ft rectangular swimming pool is surrounded by a walkway of uniform width. If the total area of the walkway is 136 ft2 , how wide is the walkway?

John has a bag of marbles that contains 12 red marble, 20 green marbles, and 17 blue marbles. If john pulls one marble out of the bag what is the probility that will not be red

A = {1, 3, 5, 7, 9} B = {2, 4, 6, 8, 10} C = {1, 5, 6, 7, 9} A ∩ (B ∩ C) = a.) {1, 3, 5, 6, 7, 9} b.) {1, 2, 3, 4, 5, 6, 7, 8, 9, 10} c.) {}

A cylindrical grain bin has a radius of 9 feet and a height of 30 feet. What is the surface area of the bin

Consider two boxes, one containing one black and one white marble, the other, two black and one white marble. a box is selected at random and a marble is drawn at random from the selected box. what is the probability that the marble is black? 37.

If runners in a long distance race were to run straight from the starting line to the finish line they would run 13 kilometers. However, the road they run makes them travel longer than that.

If a train leaves the station at 7:00 AM and travels at 56 mph, at what time would it arrive at the next town that is 450 miles away?

Which statement is false? Every integer is a real number. Every real number is a rational number. Every positive rational number has a square root. Every integer is a rational number.

6. You deposit $1500 in an account that pays 5% interest yearly. a. Write an exponential equation describing this situation. b. How much money do you have after 6 years?