Examples for secondary school students - page 137 of 237
Number of problems found: 4730
- Ball Velocity Train Relative
We throw a ball in an express car traveling at a constant speed of 24 m/s, whose initial speed relative to the vehicle is 7 m/s. What is the initial velocity of the ball relative to the surface of the ground if we throw it a) in the direction of travel b) - Paratrooper
After the parachute is opened, the paratrooper drops to the ground at a constant speed of 2 m/s, with the sidewinding at a steady speed of 1.5 m/s. Find: a) the magnitude of its resulting velocity concerning the ground, b) the distance of his land from a - Running Track Overtaking
Two boys train to run on a 400 m closed track. They both run simultaneously from the same starting track in the same direction. Boy A runs at a constant speed of 5 m/s, and Boy B runs at a constant speed of 3 m/s. At what time does Boy A overtake Boy B fo - Drug liver elimination
The patient was given the drug, and the measured liver concentration was t hours after administration: c (t) = -0.025 t² + 1.8t. When will the liver product be eliminated entirely? - Mixed with percentages
Calculate 33 1/3% of 570. - The position
The displacement function S=t³-2t²-4t-8 gives the position of a body at any time t. Find its acceleration at each instant time when the velocity is zero. - Inverted nine
In the hotel Inverted Nine, each hotel room number is divisible by 6. How many rooms can we count with the three-digit number registered by digits 1, 8, 7, 4,9? - Progression
-12, 60, -300,1500 need the next 2 numbers of pattern - Domains of functions
F(x)=x²-7x and g(x)=5-x² The domain of (fg)(x) is. ... The domain of (f/g)(x). .. - AP of two numbers
The arithmetic mean of two numbers is 142, one of the numbers is 16 more than the second. Find both numbers. The arithmetic mean is (a+b)/2 - Two resistors
Two resistors when they give 25 ohms in series and 4 ohms in parallel, what are the values of - Circle annulus
There are two concentric circles in the figure. The chord of the larger circle, 10 cm long, is tangent to the smaller circle. What does annulus have? - Equilateral triangle ABC
In the equilateral triangle ABC, K is the center of the AB side, the L point lies on one-third of the BC side near point C, and point M lies on one-third of the side of the AC side closer to point A. Find what part of the ABC triangle contains the triangl - Commission 2
Mr. Gomez sells used cell phones. His commission for every cellphone sold is 20%. If his total sales are Php 33850, how much is his commission? Please, please, please show your solution. - Shuyen
Shuyen wanted to save some money. She deposited Php.300 in a bank that pays 0.5% interest per annum. After nine months, she needed the money to buy some gifts. How much will she be able to get if he withdraws all her money from the bank? - Test scores
Jo's test scores on the first four 100-point exams are as follows: 96,90,76, and 88. If all exams are worth the same percentage, what is the minimum test score necessary on his last exam to earn an A grade in the class (90% or better)? - PIN code
The PIN on Michael's credit card is a four-digit number. Michael told his friend: • It is a prime number - a number greater than 1, which is only divisible by the number one and by itself. • The first digit is larger than the second. • The second digit is - Number axis point
On the number axis, point P is the image of the number -2.54, and point Q is the image of the number 10.71. Find which number is the point R such that Q is the center of the line PR. - Three Hotels Tourists Count
Tourists are accommodated in three hotels. There are eight more tourists in the second hotel than in the first. In the third hotel, there are 14 more than in the second. How many tourists stayed in each hotel if there were 258 in total? - Rectangle - area, perimeter
The area of a rectangular field is equal to 300 square meters. Its perimeter is equal to 70 meters. Find the length and width of this rectangle.
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