Explanation

A linear equation in two variable has infinitely many solutions and its graph is always a straight line.

Explanation

Explanation

A face-centered cubic unit cell has 4 atoms per unit cell.

Simple cubic and body-centered cubic unit cells have 1 and 2 atoms per unit cell respectively.

Explanation

The set of limit points of the open interval ]0,1[ in the real line R is the closed interval [0,1].

This is because every point in [0,1] is a limit point of ]0,1[, as every neighborhood of each point in [0,1] contains a point in ]0,1[.

Explanation

Explanation

 1 cm is equal to 10 mm.

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ND27-12-2022

Explanation

• true about logarithms is: both characteristic and mantissa will always be positive
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• the characteristic of the logarithm of a number may be positive or negative but the mantissa is always positive.
•  Logarithms are always written with the decimal part positive.
• ∴ log 0.03 = -2 + a positive fraction
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• the logarithm of a number is the exponent to which another fixed value, the base must be raised to produce that number. eg. the logarithm of 1000 to base 10 is 3, as 10 to the power 3 is 1000
  

Explanation

If we plot the points, the shape formed appears to be a Trapezium, as it has one pair of parallel sides and another pair of non-parallel sides.

The given coordinates are:

1. (5, 2)
2. (7, 0)
3. (1, -2)
4. (-1, 0)

Explanation

A tangent line intersects a circle at 1 point.

This is because a tangent touches the circle at exactly one point without crossing it.

Explanation

To find the distance of the ladder from the wall, we can use trigonometry.

Let's denote the distance from the wall as 'x'. Since the ladder forms a 60° angle with the wall, we can use the cosine function:

cos(60°) = x / 20

We know that cos(60°) = 0.5, so:

0.5 = x / 20

x = 20 × 0.5

x = 10 m