abbz13
13.12.2019 •
Mathematics
Find the value of y when x equals 4, -3x+9y=-57
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Ответ:
add 12 to both sides, 9y = -45
divide 9 from both sides to isolate the y
y = -5
Ответ:
The distance between drinking fountain and bench is 4 units
The distance between bench and center of slide is 3 units
The right angled triangle is formed by the three locations.
Step-by-step explanation:
The location of the drinking fountain is (-4, 2)
The location of the bench is (0, 2)
The location of the center of the slide is (0, 5)
Part a) What is the distance from the drinking fountain to the bench? What is the distance from the bench to the center of the slide?
To find the distance from the drinking fountain to the bench we will use distance formula:
The location of the drinking fountain is
The location of the bench is
Substitute the values in the formula
Thus the distance between drinking fountain and bench is 4 units
Now to find the distance from the bench to the center of the slide
The location of the bench is
The location of the center of the slide is
Substitute the values in the formula
Thus the distance between bench and center of slide is 3 units
Now calculate the distance between drinking fountain and center of slide
The location of the drinking fountain is
The location of the center of the slide is
Thus the distance between drinking fountain and center of slide is 5 units
Part b) What type of triangle is created by the three locations?
The sides of the triangle formed by these points are of length 3 units , 4 units , 5 units
Check whether it satisfies Pythagoras theorem
So,the right angled triangle is formed by these points since it satisfies the Pythagoras theorem.
Hence the right angled triangle is formed by the three locations.