# Expression of a variable from the formula - math problems

#### Number of problems found: 1154

• Solve: Solve: 2r2+7r-r2-9
• Temperatures Temperatures in degrees Fahrenheit and Celsius are related by the rule F = 1.8C + 32. What is the temperature in degrees Celsius if it is 50°F?
• The expression What is the value of the expression ((62+60))/(23)
• The width The width of a rectangular garden is 4 m less than the length. If the area of a rectangular garden is 96 square meters, what is the dimension of the garden?
• Given 2 Given g(x)=x2+x+1 where x=t2. What is g(t²)?
• Semicircle The ornament consists of one square and four dark semicircles. The area of the square is 4 cm ^ 2. Find the area of one dark semicircle and round the result to hundreds.
• The isosceles The isosceles trapezoid ABCD has bases of 18 cm and 12 cm. The angle at apex A is 60°. What is the circumference and content of the trapezoid?
• Insert Insert five numbers between 8 and 27 such numbers that, with two given ones, they form the first seven members of the geometric sequence.
• The product 3 The product of the two numbers is 15 ⁵/₆. If one of the numbers is 5 ²/₃, find the other.
• When 5 When 5 is subtracted from both my numerator and denominator I become 3/4. What fraction i am?
• A trapezoid 3 A trapezoid ABCD has the bases length of a = 120 mm, c = 86 mm and the area A = 2,575 mm2. Find the height of the trapezoid.
• Evaluate expr with 2 vars If a=6 and x=2, find the value of (2ax + 7x- 10) /(4ax-3a-2)
• Trapezoids In the isosceles trapezoid ABCD we know: AB||CD, |CD| = c = 8 cm, height h = 7 cm, |∠CAB| = 35°. Find the area of the trapezoid.
• Diagonals of rhombus Find a length of the diagonal AC of the rhombus ABCD if its perimeter P = 112 dm and the second diagonal BD has a length of 36 dm.
• One of One of the internal angles of the rhombus is 120° and the shorter diagonal is 3.4 meters long. Find the perimeter of the rhombus.
• A perimeter A perimeter of a parallelogram is 2.8 meters. The length of one of its sides is equal to one-seventh of the entire perimeter. Find lengths of the sides of the parallelogram.
• The ratio 4 The ratio of two number is 5:4 if 40% of the first number is 12, what will be 50% of the second number?
• Perimeter to area 2 Find the area of a square whose perimeter is 100 cm with solve.
• If x=4 If x=4 and y=-3, what is the value of the expression x² + 2xy - 4x + 3y + y²?
• Cost structure You are currently trying to decide between two cost structures for your business: one that has a greater proportion of short-term fixed costs and another that is more heavily weighted to variable costs. Estimated revenue and cost data for each alternative

Do you have an exciting math question or word problem that you can't solve? Ask a question or post a math problem, and we can try to solve it.

We will send a solution to your e-mail address. Solved examples are also published here. Please enter the e-mail correctly and check whether you don't have a full mailbox.