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Sergeu [11.5K]
3 years ago
12

Experience shows that few students hand in their statistics exams early; most prefer to hand them in near the end of the test pe

riod. This means the time taken by students to write exams is positively skewed.
a. True
b. False
Mathematics
1 answer:
konstantin123 [22]3 years ago
4 0

Answer:

False

Step-by-step explanation:   6 28 13  50

skewing to the right of a sysmetrical distribution is a negative skew

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Triangle M was dilated by a scale factor of 1.2 to form triangle M. How does the area of triangle M'
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Answer:

The area of triangle M is 1.44 times the area of triangle M.

Step-by-step explanation:

From Geometry we remember that the area formula of the triangle is:

A = \frac{1}{2}\cdot b\cdot h (1)

Where:

b - Base of the triangle, dimensionless.

h - Height of the triangle, dimensionless.

A - Area of the triangle, dimensionless.

The dillation of the triangle by a scale factor means that:

A' = \frac{1}{2}\cdot b'\cdot h' (2)

b' = k\cdot b (3)

h' = k\cdot h (4)

Where:

b' - Dilated base of the triangle, dimensionless.

h' - Dilated height of the triangle, dimensionless.

A' - Dilated area of the triangle, dimensionless.

k - Dilation factor, dimensionless.

If we know that k = 1.2, then the area formula for the dilated triangle is:

A' = \frac{1}{2}\cdot (k\cdot b)\cdot (k\cdot h)

A' = k^{2}\cdot \frac{1}{2}\cdot b\cdot h

A' = k^{2}\cdot A

Therefore, the area of triangle M is 1.44 times the area of triangle M.

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