নিচের কোন সম্পর্কটি সঠিক?
যদি (x-ai) এবং (-b+iy) পরস্পর অনুবন্ধী হয়, তবে x ও y এর মান নিচের কোনটি?
5-3x-x2 এর সর্বোচ্চ মান-
-1, -2, 0, 1, 2, 3, 4, 5 অংকগুলোর সাহায্যে যা গঠন করা যায় না তা হচ্ছে -
A large delicatessen purchased P pounds of chose for c dollars per pound.If d pounds of the cheses had to be discardede due to spoilage and the delicatessen sold the rest for s dollars per pond, which of the following represents the gross profit on the sale of the purchase?
Sabrina is contemplating a job switch, she is thinking of leaving her job paying $45,000 per year plus 15 percent commission for each sale made. If each of her sales is for $ 1,500, what is the least m number of sales she must make per year if she is not to lose money because of the job change?
How many liters of a 40% iodine solution need to be mixed with 35 liters of a 20% iodine solution to create a 35% iodine solution?
In the figure below AD+4, AB=3 and CD= 9. what is the area of triangle AEC?
Over the course of a year , a certain microbrewery increased its beer output by 70 percent, At the same time , it decreased its total working hours by 20 percent , By what percent did this factory increase its output per hour?
Dr. Kramer plans to invest $20.000 in an account paying 6% interest annually. Hows much more must she invest at the same time at 3% so that her total annual income during the first year is 4%of her entire investment?
Two dogsled teams raced across a 300 mile course in Wyoming. Team A finished the course in 3 fewer hours than did team B. If team A's average speed was 5 miles per hour greater than that of team B, what was team B's average speed, in miles per hour?
If x dozen eggs cost y dollars, what is the cost, C, of Z dozen eggs?
`If 11 persons meet at a reunion and each person shakes hands exactly once with each of the others, what is the total number of handshakes?
In a rare coin collection, all coins are either pure gold or pure silver , and there is initially one gold coin for every three silver coins . With the addition of 10 more gold coins to the collection, the ratio of gold coins to silver coins is 1 to 2. Based on this information , how many total coins are there now in this collection (after the acquisition)?
when the integer k is divided by 7, the remainder is 5. which of the following expressions below when divided by 7, will have remainder of 6? I. 4k +7 , II. 6k + 1 III. 8k +1
A grocer has 400 pounds of coffee in stock , 20 percent of which is decaffeinated . If the grocer buys another 100 pounds of coffee of which 60 percent is decaffeinated, what percent, by weight, of the grocer's stock of coffeee is decaffeinated?
Timothy leaves home for school, riding his bicycle at a rate of 9 miles per hour. Fifteen minutes after he leaves, his mother sees a Timothy's math homework lying on his bed and immediately leaves home to bring it to him. If his mother drives at 36 miles per hour, how far (in terms of miles) must she drive before she reaches Tmothy?
A couple spent $244 in total while dining out and paid this amount using a credit card. The $264 figure included a 20 percent tip which was paid on top of the price of the food which already included a sales tax of 10 percent. what was the actual price of the meal before tax and tip?
One-fifth of the batteries produced by an upstart factory are defective and one -quarter of all batteries produced are rejected by the quality control technician. If one-tenth of the non-defective batteries are rejected by mistake and if all the batteries not rejected are sold, then what percent of the batteries sold by the factory are defective?
Bill and Ben can clean the garage together in 6 hours. If it takes Bill 10 hours working alone, how long will it take working alone?