# Recent questions tagged mathematics

Colin invests £2900 into his bank account. He receives 3% per year compound interest. How much will Colin have after 4 years? Give your answer to the nearest penny where appropriate.
Two circles are concentric if they have the same center. On a coordinate plane, a circle has center (4, 6) and has a radius of 2 units. Which equation represents a circle that is concentric with the circle shown but has a radius that is twice as large? (x – 4)2 + (y – 6)2 = 4 (x – 4)2 + (y – 6)2 = 16 (x – 6)2 + (y – 4)2 = 16 (x – 6)2 + (y – 4)2 = 4
The height in feet of a baseball can be modeled by the function y = −16t2 + 64t, where t is the time in seconds after the ball is hit. Find the baseball's maximum height and the time it takes to reach this height. Then find how long the baseball is in the air.
rectangle and a parallelogram have the same base and the same height. Use the drop‐down menu to compare the areas of the two figures. The area of the rectangle is. (((((Here is were AB OR D GOES , so the answer goes here)))) the area of the parallelogram. Options. A:equal to B:Greater than C:Less than
A house has an electric heating system that consists of a 300-W fan and an electric resistance heating element placed in a duct. Air flows steadily through the duct at a rate of 0. 66 kg/s and experiences a temperature rise of 7°C. The rate of heat loss ... power rating of the electric resistance heating element. The constant pressure specific heat of air at room temperature is cp = 1. 005 kJ/kg·K
Juan and Matthew each have gardens. Juan's garden is 16 feet long and 12 feet wide. Matthew's garden is 18 feet long and 21 feet wide. Area is found by multiplying length and width. What is the total area of the two gardens?
The table show the value of a car as it relates to its age. A 2-column table with 5 rows. The first column is labeled age (years) with entries 0, 1, 2, 3, 4. The second column is labeled value (dollar sign) with entries 20,000; 18,000; 16,200; 14,580; 13,122. Which statements describe ... | x < 0}. The range is {V | 0 V 20,000}. The value, V, is represented by the equation V = 20,000(0.9)x.
Consider a chocolate manufacturing company that can produces two types of chocolate - A and B. Both the chocolates require Milk and Choco only. To manufacture each unit of A and B, the following quantities are required: Each unit of A requires 1 unit of Milk and 2 units of Choco ... years (decide about to produce A or B?). The discount rate is k=0.1. Hint: assume we have period 0, 1, 2.
Write the standard equation of the circle with the center ​(-14​,-5​) that passes through the point ​(​-7,​5).