Answer:
A = 450 cm²
Step-by-step explanation:
Since the right triangle is isosceles then the 2 logs are congruent , both 30 cm and at right angles to each other.
The area (A ) of the triangle is calculated as
A = bh ( b is the base and h the perpendicular height )
Here b = h = 30 , then
A = × 30 × 30 = × 900 = 450 cm²
The y-intercept is the point where the graph crosses the y-axis.
The line crosses the y-axis at
So, the y-intercept is
Answer:
A. Show that the diagonals form two congruent triangles using the definition of a rhombus and geometric properties. Then, use CPCTC (corresponding parts of congruent triangles are congruent) to show that the opposite interior angles are bisected.
Step-by-step explanation:
Answer choice A is the only one that applies specifically to a rhombus.
The other answer choices are true of triangles and vertical angles in general. They do not relate specifically to the problem at hand.
Answer:
Step-by-step explanation:
Given that:
population mean = 10
variance = 25 ; = = 5
sample size n = 28
The standard deviation of the sample mean:
=
= 0.95
To halve the standard deviation of the sample mean, the size of how large the sample will be can be computed as follows:
= 2
n = 4 × 28
n = 112