D
use the formula speed = wavelength x wave frequency
Answer:
Complete the square on x by adding <u>49</u> to both sides.
Complete the square on y by adding <u>81</u> to both sides.
Step-by-step explanation:
We have been given an equation
. We are asked to complete the squares for both x and y.
We know to complete a square, we add the half the square of coefficient of x or y term.
Upon looking at our given equation, we can see that coefficient of x is 14 and coefficient of y is 18.


Now, we will add 49 to complete the x term square and 81 to complete y term square on both sides of our given equation as:

Applying the perfect square formula
, we will get:

Therefore, We can complete the square on x by adding <u>49</u> to both sides and the square on y by adding <u>81</u> to both sides.
Answer:
3 and 4
Step-by-step explanation:
3 and 4 added up is 7,4 is one number mor than 3
Answer:
x-intercept (2,0) or x=2
y-intercept (0,-4) or y=-4
Step-by-step explanation:
4x-2y>8
2x-y>4
2x-4>y
y<2x-4
y=2x-4
when y=0
2x=4
x=2
x-intercept is (2,0)
and y-intercept is (0,-4)
put x=0,y=0
0-0>8
or 0>8 which is not true. so (0,0) does not lie on the graph.
so graph lies right of the line .
Answer:
42 units²
Step-by-step explanation:
The figure is composed of a rectangle ( middle section) and 2 triangles with the same length base and height
Area of rectangle = 7 × 4 = 28 units²
Area of 2 triangles = 2 ×
× 7 × 2 = 14 units²
Area of figure = 28 + 14 = 42 units²