Each angle in a square measures 90 degrees.

The sum of angles in a triangle is always 180 degrees. If one angle is 40 degrees and another is 60 degrees, the third angle is 180 - (40 + 60) = 80 degrees.

The sum of angles in a triangle is 180 degrees. Therefore, the third angle = 180 - (50 + 60) = 70 degrees.

The exterior angle of a triangle is equal to the sum of the two opposite interior angles. Therefore, the exterior angle = 50 + 60 = 110 degrees.

The exterior angle of a triangle is equal to the sum of the two opposite interior angles. Therefore, the exterior angle = 50 + 60 = 110 degrees.

First, arrange the data in ascending order: 10, 12, 14, 15, 18. The median is the middle value, which is 14.

The numbers are in order. The median is the 4th number, which is 40.

Arranging the numbers: 18, 20, 22, 25, 30. The median is the middle number, which is 22.

Arrange the numbers: 3, 5, 7, 8, 10, 12. The median is the average of the 3rd and 4th numbers: (7 + 8) / 2 = 7.5.

To find the median, first arrange the numbers in ascending order: 1, 3, 5, 7, 9. The median is the middle number, which is 5.

Arranging the numbers: 1, 2, 3, 4, 7, 9. The median is the average of the 3rd and 4th numbers: (3 + 4) / 2 = 3.5.

The minimum occurs at x = -b/(2a) = 8/(2*2) = 2. f(2) = 2(2^2) - 8(2) + 10 = 2.

The vertex is at x = -4/(2*2) = -1. The minimum value is f(-1) = 2(-1)^2 + 4(-1) + 1 = -1.

Mode is the number that appears most frequently. Here, 2 appears 3 times.

Mode is the number that appears most frequently. Here, 5 appears 3 times.

The number 4 appears most frequently (3 times). Hence, mode = 4.

The mode is the number that appears most frequently. Here, 4 appears 3 times, so the mode is 4.

The mode is 3, as it appears 3 times, more than any other number.

The mode is 3, as it appears most frequently (three times) in the data set.

The order of a matrix is given by the number of rows followed by the number of columns. Therefore, a matrix with 3 rows and 4 columns is of order 3x4.

The perimeter of a rectangle is given by P = 2(length + width). Here, P = 2(10 + 5) = 30 cm.

There are 13 hearts in a deck of 52 cards. Probability = 13/52 = 1/4.

The first five prime numbers are 2, 3, 5, 7, and 11. Their product is 2 × 3 × 5 × 7 × 11 = 2310.

The product of the roots of the equation ax^2 + bx + c = 0 is given by c/a. Here, c = 6 and a = 2, so the product is 6/2 = 3.

The product of the roots is given by c/a = 3/1 = 3.

The product of the roots is given by c/a = 10/1 = 10.

Using Vieta's formulas, the product of the roots is c/a = 10/1 = 10.

Projection = (A · B / |B|^2) * B = (11 / 5) * (1i + 2j) = 2.5.

Projection = (A · B / |B|^2) * B = (14 / 8) * (2i + 2j) = (7/4)(2i + 2j) = 3.5i + 3.5j.

Projection of A onto B = (A · B / |B|^2) * B = ((6*2 + 8*2) / (2^2 + 2^2)) * (2i + 2j) = (28/8)(2i + 2j) = 7i + 7j.