For each ounce of the product, let
x = ounces of moisturizing lotion used,
y = ounces of self-tanning lotion used.
The sum of the two lotions per ounce is equal to one ounce. Therefore
x + y = 1 (1)
Moisturizing lotion costs $0.70 per ounce.
Self-tanning lotion costs $22 per ounce.
Because the product costs $1.30 per ounce. Therefore
0.70x + 22y = 1.30 (2)
From (1), obtain
y = 1 - x (3)
Substitute (3) into (2).
0.70x + 22(1 - x) = 1.30
0.70x - 22x + 22 = 1.30
-21.3x = -20.7
x = 0.9718 ounces
From (3), obtain
y = 1 - 0.9718 = 0.0282 ounces.
A batch of the product is 700 ounces. Therefore the amount of self-tanning lotion used is
700*y = 700*0.0282 = 19.74 ounces
Answer: 19.74 ounces
1.5. please mark me brainliest answer if i helped !! thanks
if the perimeter of a square is X and the perimeter of a triangle is Y
then the side of triangle is Y/3 AND OF square is X /4
YOU MUST ESTABLISH AN EQUATION SYSTEM
I) X = 4+Y
II) X/3 = 8+Y/4
Of the equation II you obtain X , THE m.c.m IS 12
4X = 96+3Y, x = 96/4+3y/4, substitute it in the equation I
96/4 +3Y / 4 = 4 +Y ⇒ 4(96/4+3Y/4) = 4( 4+Y)
96+3Y = 16 + 4Y
96-16 = 4Y- 3Y, Y = 90, NOW X = 90+ 4 = 94 AND THIS IS THE VALUE OF THE PERIMETER OF THE TRIANGLE