We go from 10x+20 = 50 to 10x = 30 after we subtract 20 from both sides. So we use the subtraction property (of equality).
Answer: Choice D
Total the dollar value of all the coins:
10 dimes = 10 * 0.10 = $1.00
15 nickels = 15 * 0.05 = $0.75
8 quarters = 8 * 0.25 = $2.00
total value: 2.00 + 1.00 + 0.75 = $3.75
total coins: 10 + 15 +8 = 33
expected value = total value / total coins:
3.75 / 33 = $0.11
The answer is going to be 4. hope that helped
Answer:
(1,-1)
Step-by-step explanation:
Since the equation, <span>h=1.6a+41, is linear, we know that the coefficient of x, or in this case a, is the slope. Therefore the correct answer would be
</span><span>The model predicts that for each year older a male student is, he is about 1.6 inches taller.</span>