I believe it's 7 hope it helps
Answer:
B.) 80 cans, 20 brushes
Step-by-step explanation:
Let the cans of paint be represented by variable <em>p</em> , and brushes by variable <em>b</em>
The first equation would be ; p + b = 100
p = 100 - b
The second equation would be;
8p + 12b = 880
Replace p in the equation by (100-b);
=8(100-b) + 12b =880
=800 - 8b +12b = 880
= subtract 800 from both sides to get;
4b = 880-800
4b = 80
divide both sides by 4 to solve for b;
b= 80/4
b = 20
If p + b = 100, then p+20 = 100
p = 100-20
p = 80
Therefore, they sold 80 cans of paint and 20 brushes
I think it is 57 I just subtracted the two numbers
1 lb ≈ 0.454 kg
1 in ≈ 2.54 cm
I'm not sure I understand the "do not" part of this question. What does it mean to convert from cubic inches (volume) to inches (length), and from centimeter to cubic centimeters?
In any case, you have
(1 lb)/(32.375 in³) ≈ (1 lb)/(3.19 in)³
… ≈ (1 lb)/(3.19 in)³ × (0.454 kg)/(1 lb) × ((1 in)/(2.54 cm))³
… ≈ (0.454 kg)/(3.19 in)³ × ((1 in)/(2.54 cm))³
… ≈ (0.454 kg) × ((1 in)/((3.19 in) × (2.54 cm))³
… ≈ (0.454 kg) × (1/(8.10 cm))³
… ≈ (0.454 kg) × 1/(530.531 cm³)
… ≈ (0.454 kg)/(530.531 cm³)
… ≈ 0.000856 kg/cm³
