Equations practice problems - page 33 of 210
An equation is a statement that asserts the equality of two expressions, which are connected by the equals sign =. Solving an equation containing variables consists of determining which values of the variables make the equality true. The variables for which the equation has to be solved are also called unknowns, and the values of the unknowns that satisfy the equality are called solutions of the equation.Number of problems found: 4195
- Supplementary angles
One of the supplementary angles is larger by 33° than the second one. Calculate the angle size. - Digit sum
How many are three-digit numbers that have a digit sum of 6? - Intersections
Find the intersections of the function plot with coordinate axes: f (x): y = x + 3/5 - Equilateral triangle
Calculate the area of an equilateral triangle with a circumference of 72cm. - I think
I think a number. When I multiply it by five and subtract 477, I get the same number as if I multiplied it twice. What number do I think? - Unknown number
If I reduced the sum of the numbers 70 and the unknown number three times, I would get 100. what is the unknown number? - Number unknown
Adela thought of the two-digit number. She added it to its ten times and got 407. What number does she think? - Ladder
A 4 m long ladder touches the cube 1mx1m at the wall. How high reach on the wall? - If we
If we increase the unknown number by 4%, we get 780. Determine the unknown number. - Ball game
Richard, Denis, and Denise together scored 932 goals. Denis scored four goals over Denise, but Denis scored 24 goals less than Richard. Determine the number of goals for each player. - Sides of triangle
Triangle has a circumference of 42 cm. Side a is two times shorter than side b, and side c is 2 cm longer than side a. Find the sizes of the sides of a triangle. - Unknown number
Find the unknown number equal to a quarter of a fifth of a number, which is by 152 more than an unknown number. - Bar
Half of the bar is green, the third is yellow, and the remaining 40cm is red. How long is a bar? - Number
What number do I think? The third is 6, and a half is two more than its quarter. - Timeage
Seven times my age is 8, less than the largest two-digit number. How old am I? - Aunt
Annie's aunt is 35 years old, and Annie is 14 years. For how many years will aunt have twice as many years as Annie? - Classroom
In a class are 44 pupils. Boys are 8 less than girls. How many boys and girls are in the classroom? - Center
In the ABC triangle is point D[1,-2,6], which is the center of the |BC|, and point G[8,1,-3], which is the center of gravity of the triangle. Find the coordinates of the vertex A[x,y,z]. - Circle
From the equation of a circle: -x² -y² +16x -4y -59 = 0 Calculate the coordinates of the center of the circle S[x0, y0] and the radius of the circle r. - Hypotenuse and height
In a right triangle is length of the hypotenuse c = 56 cm and height hc = 4 cm. Determine the length of both triangle legs.
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