Algebra
If 3x + 5 = 20, what is the value of x?
x= 5
What is the area of a rectangle with a length of 8 units and a width of 5 units?
40 square units
What is the result of 15 multiplied by 7?
105
Sally has 3 apples and gives 2 to her friend. How many apples does she have left?
1
If all birds have feathers, and this animal has feathers, what can we conclude about the animal?
It is likely a bird.
Simplify the expression 2(x + 3) - 4.
2x + 2
Determine the perimeter of a square with a side length of 12 units.
48 units
Divide 144 by 12.
12
Tom bought a shirt for $35 and a pair of jeans for $45. How much did he spend in total?
$80
If A = 2, B = 4, and C = 6, what is the value of D in the sequence (A, B, C, D)?
8
Factorize the quadratic expression x^2 - 5x + 6.
(x - 2)(x - 3)
Calculate the volume of a cylinder with a radius of 4 units and a height of 10 units.
160π cubic units
Calculate the sum of the first 20 positive integers.
210
The first 20 positive integers: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20
A rectangular garden has a length of 15 meters and a width of 8 meters. What is the area of the garden?
120 square meters
Solve the equation for x: 2x + 7 = 15.
x = 4
Solve the system of equations:
2x + y = 10
3x - y = 5
x = 3, y = 4
In a triangle with angles 45°, 75°, and one unknown angle, what is the measure of the unknown angle?
60°
If a shirt costs $25 and is on sale for 20% off, what is the final price?
$20
Mary saved $20 each week for 6 weeks. How much money did she save in total?
$120
Express the fraction 3/5 as a decimal.
0.6
Find the roots of the equation 2x^2 - 8x + 6 = 0.
x = 1, x = 3
What is the surface area of a cube with a side length of 6 units?
216 square units
A train travels at a speed of 60 miles per hour. How far will it travel in 2.5 hours?
150 miles
If a car travels at a speed of 50 miles per hour and travels for 4 hours, how far does it go?
200 miles
The sum of three consecutive odd numbers is 57. What are the three numbers?
17, 19, 21