7.5 cm=__ m A.0.0075 B.0.075 C.0.75 D.750
2 answers:
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Answer:
length of the third side may be either 3.4 m or 2.8 m.
Step-by-step explanation:
Measure of two sides of a right triangle are 1.4 m and the other side is 3.1 m.
then we have to find the measure of third side.
If the third side of the triangle is its hypotenuse then
(Third side)² = (1.4)² + (3.1)²
Third side =
=
=
= 3.4 m
If the third side is one of the perpendicular sides of the triangle and 3.1 m is hypotenuse, then
(Third side)² + (1.4)² = (3.1)²
(Third side)²= (3.1)² - (1.4)²
Third side =
=
=
= 2.76 m
≈ 2.8 m
Therefore, length of the third side may be either 3.4 m or 2.8 m.
Answer:
option (b) is correct.
First step to solve for deriving the quadratic formula from the quadratic equation is completing the square.
Step-by-step explanation:
Given : the quadratic equation
We have to find the first step for deriving the quadratic formula from the quadratic equation.
Quadratic formula is given by
Consider the given quadratic equation
Divide the equation by a, we get,
Take to other side, we get,
Add to both side, we get,
Thus, the left side is in the form of
On solving, we get,
Then solve for x , we get quadratic formula
Thus, first step to solve for deriving the quadratic formula from the quadratic equation is completing the square.
Thus, option (b) is correct.