Answer:
-4(8x-4)+3x = -29x+16
Step-by-step explanation:
1. Simplify -4(8x-4) by using the distribution property:
<u>-4(8x) = -32x and -4(-4) = 16 so -4(8x-4) = -32x+16</u>
2. Add 3x to the remaining equation:
<u>-32x+16+3x = -29x+16 </u>
3. The answer is:
<u> -29x+16 </u>
Answer:
12/5 or 2⅖
Step-by-step explanation:
2x/3 = 8/5
2x = 3 × 8/5
2x = 24/5
x = 24/5 ÷ 2
x = 12/5
Or 2⅖
Answer: the cost of one chicken is $8
The cost of one duck is $5
Step-by-step explanation:
Let x represent the cost of one chicken.
Let y represent the cost of one duck.
Last month, he sold 50 chickens and 30 ducks for $550. It means that
50x + 30y = 550- - - - - - - - - - - 1
This month, he sold 44 chickens and 36 ducks for $532. It means that
44x + 36y = 532- - - - - - - - - - - 2
Multiplying equation 1 by 44 and equation 2 by 50, it becomes
2200x + 1320y = 24200
2200x + 1800y = 26600
Subtracting, it becomes
- 480y = - 2400
y = - 2400/- 480
y = 5
Substituting y = 5 Intl equation 1, it becomes
50x + 30 × 5 = 550
50x + 150 = 550
50x = 550 - 150
50x = 400
x = 400/50
x = 8
The area of the circle, to two decimal places, is A = 3.14(1.8 m)^2
Then A = 10.17 m^2.