Answer:
x=4.47
Step-by-step explanation:
this is the answer
Answer:
4
Step-by-step explanation:
3(a+2) = 26-2a
3a+6=26-2a
3a+2a=26-6
5a=20
a=20/5
a=4
Answer:
3(x - 2)² - 17
Step-by-step explanation:
The equation of a quadratic in vertex form is
y = a(x - h)² + k
where (h, k) are the coordinates of the vertex and a is a multiplier
Using the method of completing the square.
Given
3x² - 12x - 5 ← factor out 3 from the first 2 terms
= 3(x² - 4x) - 5
To complete the square
add/subtract ( half the coefficient of the x- term)² to x² - 4x
= 3(x² + 2(- 2)x + 4 - 4 ) - 5
= 3(x - 2)² - 12 - 5
= 3(x - 2)² - 17 ← in vertex form
Cylinder: circle and rectangle
Cone: triangle and circle
Square pyramid: triangle
Sphere: circle
Hope this helps :)