To evaluate an algebraic expression means to find the value of the expression when the variable is replaced by a given number. To evaluate an expression, we substitute the given number for the variable in the expression and then simplify the expression using the order of operations. Example 2.3.
9514 1404 393
Answer:
x^2/1 +y^2/81 = 1
Step-by-step explanation:
We know that the equation of a unit circle is ...
x^2 +y^2 = 1 . . . . . equation of a unit circle
We also know that replacing x with x/a in a function will expand the graph by a factor of 'a'. Similarly, replacing y with y/b will do the same in the vertical direction.
An ellipse is a circle that has had different expansion factors applied along its different axes. Here, the given points tell us the center of the ellipse is (0, 0), and that it has been expanded by a factor of 9 in the y-direction and a factor of 1 in the x-direction This means the equation for it would be ...
(x/1)^2 +(y/9)^2 = 1 . . . . . equation for desired ellipse
In the required form, this is ...
Answer:
The answer to your question is below
Step-by-step explanation:
3(3x + 2) + 5 - 4x = 5x + 7
Step 1: 3(3x + 2) + 5 - 4x There is no error here, only wrote the
polynomial again
Step 2: 9x + 2 + 5 - 4x He forgot to multiply 3 x 2 = 6
9x + 6 + 5 - 4x
Step 3: 9x - 4x + 2 + 5 He simplified like terms
Step 4: 5x + 7 but is incorrect due to his mistake
The right answer should be 5x + 11
Answer:
9.82 inches²
Step-by-step explanation:
both areas are equally sized, so they are both half of the whole circle.
circle area : pi × r²
half of the circle area is therefore pi × r² / 2
the picture gives us the diameter of the circle, the radius is half of the diameter.
=> r = 5/2 = 2.5
=> shaded area = pi × r² / 2 = pi × (2.5)² / 2 = 9.82 inches²
Answer:
Lol help with what
Step-by-step explanation:
