Answer:
11∗2+13∗4+15∗6+⋯+199∗100=?
=(1−12)+(13−14)+(15−16)+⋯+(199−1100)
=(1+13+15+17+⋯+199)−(12+14+16+⋯+1100)
=(1+13+15+17+⋯+199)−12(1+12+13+⋯+150)
=∑k=15012k−1−∑k=15012k
Continue further.
Well you could count by threes and Fives and see your answer, 3,6,9,12,15, and so on and fives 5,10,15 and you have one match. 18, 21, 24, 27, 30 and 20, 25, 30. Two matches. They will blink at the same time about six times.
So, 932.4miles (.75)=699.3miles are the miles that she wants to drive by the start of three days. so each day is 25% because of 75%/3=25%
In two days it will be 50% so, .50(932.4miles)=466.2 miles is the answer.
Prelinguistic milieu teaching. Im not sure about 'data'.
Answer:
x = 9.36
Step-by-step explanation:
Add a few more lines.
We can show that the three triangles are similar as they each have a right angle and share the common angle to the right.
D = 2R = 33.4
Purple triangle
y² = (33.4 - x))² + 15²
y² = 1,115.56 - 66.8x + x² + 225
y² = x² - 66.8x + 1,340.56
red triangle
x² + 15² = z²
Green triangle
y² = 33.4² - z²
y² = 33.4² - x² - 15²
y² = 890.56 - x²
We now have two equations for y²
x² - 66.8x + 1,340.56 = 890.56 - x²
2x² - 66.8x + 450 = 0
x² - 33.4x + 225 = 0
x = (33.4 ±√(33.4² - 4(1)(225))) / 2(1)
x = 24.0409... ignore as it is bigger than R
or
x = 9.359019...