M∠ rst + m∠ vst = 180°
3 x + 7° + 9 x + 17° = 180°
12 x + 24° = 180°
12 x = 180° - 24°
12 x = 156°
x = 156°: 12
x = 13°
m ∠ rst = 3 · 13° + 7° = 39° + 7° = 46°
m ∠ vst = 180° - 46° = 134°
Answer:
A ) 46° and 134°
For the red flowers, there are 18 in each row. For the yellow flowers, there are 6 in each row.
First, we determine the percentage increase for the tax.
Initial amount = 25×9 = 225 ⇒ The 9 signifies 9 lots of thousands representing the house's value.
New amount = 28×9 = 252
Tax increase = 252 - 225 = 27
Percentage increase = (27÷225) ×100 = 12%
Therefore, the yearly rent should rise by 12%
Monthly rent is $60
Yearly rent = 60×12 = $720
With a 12% increase = 720×1.12 = 806.4 ⇒ Here, 1.12 is the multiplier derived from 100%+12%=112%=1.12
Monthly rent becomes 806.4÷12 = $67.20, resulting in an additional $7.20 each month.
Paula's dog has a weight of 36 pounds.
The temperature change rate is determined by taking the temperature difference in °F and dividing it by the time measured in minutes. Thus,
rate of change in temperature = -25.5°F / 1.5 min
= -17°F / min
Therefore, the temperature decreases at a rate of -17°F every minute.
