A gray crayon is made with 5 ml of black wax for every 6 mL of white wax
which of the following wax mixture will create the same shade of grey? Choose 2
A. 10 ml of black wax mixed with 24 ml of white wax
B. 15 ml of black wax mixed with 18 ml of white wax
C. 35 ml of black wax mixed with 42 ml of white wax
D. 20 ml of black wax mixed with 26 ml of white wax
E. 45 ml of black wax mixed with 48 ml of white wax

B and C

Step-by-step explanation:

Reduce each ratio down to it's simplest form.

Black:White

A. 10:24 = 5:12

B. 15:18 = 5:6

C. 35:42 = 5:6

D. 20:26 = 10:13

E. 45:48 = 15:16

B and C have the same ratio, so they will create the and shade.

5x + 3y = - 4

step-by-step explanation:

the equation of a line in standard form is

ax + by = c ( a is a positive integer and b, c are integers )

express the line first of all in slope- intercept form

y = mx + c ( m is the slope and c the y-intercept )

to calculate m use the gradient formula

m = ( y₂ - y₁ ) / ( x₂ - x₁ )

with (x₁, y₁ ) = (7, - 3) and (x₂, y₂ ) = (4, - 8)

m = = -

y = - x + c ← is the partial equation

to find c substitute either of the 2 points into the partial equation

using (4, - 8 ), then

- 8 = - + c ⇒ c = -

y = - x - ← in slope-intercept form

multiply all terms by 3 to eliminate the fractions

3y = - 5x - 4 ( add 5x to both sides )

5x + 3y = - 4 ← in standard form