Expression of a variable from the formula - 7th grade (12y) - math problems
Number of examples found: 209
- Simple equations
Solve system of equations: 5x+3y=5 5x+7y=25 - Unknown number 24
f we add 20, we get 50% of its triple. What is this unknown number? - Two thirds
Find two-thirds of the number equal to two-thirds of 99 - Simple equation 3
24 = n • 27, solve for n - Perimeter to area
Calculate the area of a circle with the perimeter 15 meters. - Given
Given 2x =0.125 find the value of x - Cargo
Car with cargo weight 7610 kg. Weight of car is 23% of the total weight of car and cargo. How heavy is cargo? - Cube
The sum of all cube edges is 30cm. Find the surface area of the cube. - Which
Which decimals when subtracted equal 3.89: a - b = 3.89 - Diagonal of square
Calculate the side of a square when its diagonal is 10 cm. - Area to volume
If the surface area of a cube is 486, find its volume. - Third dimension
Calculate the third dimension of the cuboid: a) V = 224 m3, a = 7 m, b = 4 m b) V = 216 dm3, a = 9 dm, c = 4 dm - Simplify 2
Simplify expression: 5ab-7+3ba-9 - Interior angles
Calculate the interior angles of a triangle that are in the ratio 2: 3: 4. - The perimeter 3
The perimeter of a rectangle is 35 cm. The ratio of the length to its width is 3:2. Calculate the dimensions of the rectangle - One and a half chicken
One and a half chicken bears one and a half egg in one and a half day. How many eggs can withstand from 6 chicken in 6 days? - Hotel
The hotel has a p floors each floor has i rooms from which the third are single and the others are double. Represents the number of beds in hotel. - Rhombus A2p
Rhombus area is 13 cm2 and its height is 5cm long . Determine a perimeter of this rhombus. - Cube surface and volume
Find the surface of the cube with a volume of 27 dm3. - Cube edges
The sum of the lengths of the cube edges is 42 cm. Calculate the surface of the cube.
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