What is k?

2k + 7k - 11 = 58

A: k = 6, 4/9

B: k = 5, 2/9

C: k = - 13 4/5

D: k = 7, 2/3

These are fractions, the first number is the whole number.

What is the area and perimeter of a polygon with angles that equal 90 and a side the equals 8

A metallurgist has an alloy with 10 % titanium and an alloy with 30 % titanium. He needs 100 grams of an alloy with 24 % titanium. How much of each alloy should be mixed to attain the 100 grams of alloy with 24 % titanium?

Which of the following dose NOT have any rectangular faces? A. Pentagonal prism B. Hexagonal pirámide C. Rectangular prisa D. Squre pyramid

A ladder is placed against a wall of a building 20m above the ground. The foot of the ladder is 15m away from the bottom of the building. What is the length of the ladder?

A recipe for 1 pumpkin pie calls for 1/1/4 cups of sugar. Alana has only 1/2 cup of sugar and she had to make 4 pies. How much sugar does she need to make all 4 pies.

If you roll a single fair die and count the number of dots on top, what is the probability of getting an even number or a 5 on a single throw?

Each chicken eats about 6 pounds of chicken feed in a month. how many pounds of chicken feed will be left after 3 months? Write and explain equations to show the steps in your solution. 300 pounds of chicken feed for 16 chickens

It takes 40 minutes to fill a water tank, and 60 minutes to drain it. How many hours will it take to fill the tank while draining it the entire time?

Tanya stores her coins in a cylindrical container. The container has a diameter of 8 inches and a height of 15 inches. Which is the volume of Tanya's container to the nearest cubic inch?

Scarlett selects a card at random from a deck that contains 18 red, 12 yellow, and 20 blue cards. What is the probability that she does not select a red card?