Answer:
<em>Axis of Symmetry: x = -4 </em>
<em>Vertex: ( -4, -6 )</em>
Step-by-step explanation:
~ Part I ~
1. To find the axis of symmetry, rewrite y = x^2 + 8x + 10 in the parabola standard form ( 4p( y - k ) = ( x - h) ^2 for an up-down facing parabola at vertex ( h, k ) and a focal length |p|) ⇒ 4 * 1/4 ( y - ( - 6 ) ) = ( x - ( - 4 ) )^2
2. Therefore the parabola properties are ⇒ ( h, k ) = ( - 4, -6 ), p = 1/4
3. <em>Answer: x = -4</em>
~ Part II ~
1. From the previous question, we got that the vertex should be ⇒ ( -4, -6 )
2. <em>Answer: ( -4, -6 )</em>
Answer:
The best predicted pulse rate of a woman who is 73 in tall is 85.99 beats per minute .
Step-by-step explanation:
Given :The equation of the regression line :
To Find : Find the best predicted pulse rate of a woman who is 73 in tall.
Solution:
y represents the pulse rate
x represents the height
Now we are supposed to find the pulse rate of a woman who is 73 in tall.
So, Substitute x = 73 in equation.
So, the best predicted pulse rate of a woman who is 73 in tall is 85.99 beats per minute .
Answer:
124.6
Step-by-step explanation:
Answer:
x= - 3.5
y= - 6.5
Step-by-step explanation:
-3x+y = 4 equation 1
-9x + 5y = -1 equation 2
and
equation 1 can be written as
y = 4+ 3x
so put this in equation 2
-9x + 5 ( 4+ 3x) = -1
-9x +20 +15x = -1
6x = -21
X= -21 ÷ 6
X = - 3.5
so put this value of x in equation 1 to find value of y
-3 ( -3.5) + y = 4
10.5 + y = 4
y = 4 - 10.5
Y = - 6.5
Answer: 47
Step-by-step explanation:
replace r by 4 and n by 5
8(4)+3(5) = 47