y= x^2 - 6x-7
Vertex = -b /2a
b= -6
a= 1
-(-6)/2(1)= 3
x= 3
Use the substitution method to find y
y= (3)^2-6(3)-7
(3)(3)-18-7
9-25
y= -16
Vertex is (3, 16)
Find x- intercept (y= 0)
y= x^2 - 6x-7
(x-7)(x+1)
x-7= 0
Move -7 to the other side. Sign changes from -7 to 7
x-7+7= 0+7
x= 7
x+1= 0
Move +1 to the other side. Sign changes from +1 to -1
x+1-1= 0-1
x= -1
Answer :B. Vertex: (3, -16); Intercepts: x=-1,7
Answer:
x = 8
Step-by-step explanation:
Here, we want to find the value of x
According to the theorem;
45 = 1/2(147 - (7x-5))
90 = 147 -7x + 5
90 = -7x + 147
7x = 147-90
7x = 57
x = 57/7
x = 8.142 which is approximately 8
Add all of the numbers up : 71xy=0
Hoped I helped!
9514 1404 393
Answer:
b ≈ 2.7
Step-by-step explanation:
The missing angle A is ...
A = 180° -53° -80° = 47°
The law of sines tells you ...
b/sin(B) = a/sin(A)
b = sin(80°)×2/sin(47°) ≈ 2.6931
Side b is about 2.7 units.
Answer:
13.75 inches^2
Step-by-step explanation:
The formula to find the height of the triangle is base * height over 2.
2.5 * 11 = 27.5
27.5/2=13.75
The area of the triangle is 13.75 inches