Solve each equation for the indicated variable abc = 1/2; b

To calculate, simply multiply 12 by 0.15 or 15%, which equals 1.8. Then subtract 1.8 from 12, yielding $10.20 as the discounted price for the pizza.

I hope this is helpful

Answer:

Step-by-step explanation:

Given

Solving for (a): n

To find n;

We will utilize

Substituting values for XY and XZ

Dividing by -6

Solving for (b) XY

Substituting 3 for n

Solving for (c): XZ

x = lowest height

<x+25 highest height

x=55

Answer:

To express the ratio of a number x with four plus two, you can set up the equation:

= 4x + 2 = 0

= 4x = -2

= x = -2/4 = -1/2

Step-by-step explanation:

I hope this helps!

Answer:

10

Step-by-step explanation:

If there’s a direct correlation between variables x and y, it can be expressed as

y = kx,

where y is the dependent variable

x is the independent variable

k signifies the constant of variation

_____________________________

For the first scenario

y = 400

x = r

using y = kx, we can derive the relation:

400 = kr

To find k here:

k = 400/r

For the second scenario

y = r

x = 4

again using y = kx, the relationship is given by:

r = 4k

Solving for k:

k = r/4

Since both conditions provide the same equation, k will have the same value in both cases.

Thus, we conclude:

400/r = r/4

=> 400*4 = r*r

=> 1600 = r^2

Hence, r is calculated to be 40.

Thus, k = r/4 = 40/4 = 10.

The constant of variation is confirmed to be 10, which is the correct answer.

Verification:

k = 400/r = 400/40 = 10