Twice a number is added to the number and the answer is 90. find the number

What number must you add to complete the square? x^2-7

Workers install 600 chairs at a constant rate. After 4 days, the workers still have to install 360 chairs. How much time does it take to install the chairs from start to finish?

At a party 4 large submarine sandwiches all the same size during the party 2/3 of the chicken sandwich 3/4 of tuna sandwich 7/12 of beef roast sandwich and5/6 of veggie sandwich had eaten which sandwich had the least amt left

What is 100892800*487987357+289?

Drag the tiles to the correct boxes to complete the pairs. Not all tiles will be used. Quadrilateral JKLM has vertices J (8, 4), K (4, 10), L (12, 12), and M (14, 10).

Which number has the same value of 28 tens

Which statements are true about quadrilaterals. A. All 4 sided shapes are parallelogram. B. All rectangles are parallelogram. C. All squares are rhombuses. D. Some trapezoid are parallelogram

Triangle A has angle measures of 90 and 46. Triangle B has angle measures of 38 and 46. Are they similar?

X/6 - 5 = 13 What does "x" equal in this equation?

Find all solutions in the interval [0, 2π). 7 tan^3x - 21 tan x = 0 A) pi/3, 2pi/3, 4pi/3, 5pi/3 B) 0, pi/5, π, 6pi/5 C) 0, pi/3, 2pi/3, π, 4pi/3, 5pi/3 D) 0, pi/3, π, 4pi/3