Victoria sells two types of flour: cake flour and pastry flour. The price of cake flour is $2.50 per kilogram and the price of pastry flour is $4.30 per kilogram. She decided to mix these two types of flour together and sell it as a new type of flour.

Determine the unit price, in dollars per kilogram, of a mix of 4 kilograms of cake flour and 5 kilograms of pastry flour.

3.9 dollars per kilograms

Step-by-step explanation:

40 x 50 = 2000

step-by-step explanation:

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.