Answer:
MN = 71
Step-by-step explanation:
You first gotta know the value of x by putting both equations in line!
4x + 19 = 6x - 7
4(13) + 19 = 6(13) - 7
52 + 19 = 78 - 7
71 = 71
<u>Answer:</u> x = 13
Then we already have the length of MN!
<u>Answer:</u> MN = 71
No question? How shall i answer
Answer:
The angle of depression calculator. How to find the angle of depression?
Since we now know what the angle of depression is, let's learn how to find it! We can determine the angle of depression using surveying equipment like an engineer's transit or a clinometer. These devices are optical instruments that have angle-measurement features and can instantly give us the angle that we need. However, we can also use mathematics to find the angle of depression. But first, we need to know two distances: the horizontal distance between the viewer and the object, and their vertical distance, as shown in the illustration below:
Answer:
The number to be added to complete the square is (13/2)^2
But the solved value for x are:
x = 11.71 or -1.28
Step-by-step explanation:
x ^ 2 + 13x + 15 = 0
x^2 + 13x = -15
(The coefficient of x^2 is 1, hence needless diving through)
Add the square of half the coefficient of x to both sides
x^2 + 13x + (13/2)^2 = -15 + ( 13/2)^2
(x + 13/2)^2 = -15 + 169/4
(x + 13/2)^2 = 109/4
Take the square of both sides
x + 13/2 = +-10.44/ 2
x = 10.44/2 + 13 /2
x = 23.44/2
x = 11.71
OR
x = 10.44/2 - 13/2
x = -2.56/2
x = -1.28
Therefore x = 11.71 or -1.28
But the number to be added to complete the square is (13/2)^2
Lets keep learning, maths is fun
Answer:
d
Step-by-step explanation:
