a constant of proportionality is a number you have to multiply x by to get y.
y=kx is the equation that expresses the proportionality of x and y
in this case, 10 video games cost $145
the question's basically asking what you have to multiply 10 by to get 145
y= 145; x=10
k= y/x = 145/10=14.5
the constant of proportionality is 14.5
If you are given t<span>he valley of at least 4 feet below sea level, and then let us assume that x is the distance of the valley, then the inequality is x < 4. </span>
Answer:
perimeter = 9x + 4
Step-by-step explanation:
The perimeter is the sum of the lengths of the sides.
perimeter = 2x + 3x - 1 + 4x + 5
Collect like terms.
perimeter = 9x + 4
Answer:
504 cm squared
Step-by-step explanation:
To find the surface area, find the area of the square base and add it to the area of each triangle face.
Find the area of the base by multiplying base length by base length.
Here the base is 12 x 12 = 144.
Find the area of each triangle face by multiplying 1/2 * b*h.
Here the area is 1/2 * 12 * 15 = 90. Since there are 4 faces, the total area is 4 * 90 = 360.
Together the surface area is 360 + 144 = 504.
