40. A scientist dropped an object from a height of 200
feet. She recorded the height of the object in 0.5
second intervals. Based on a quadratic model, which
best approximates the height at 3 seconds?
Height (ft)
200
A. 52 feet
Time (s)
0.0
0.5
1.0
B. 55 feet
195
C. 65 feet
185
1.5
165
D. 80 feet
2.0
135
2.5
100
41
2+2=?

∠acb = 8°

step-by-step explanation:

∠xba lies on the circle and is half the measure of the intercepted arc ax

hence

measure of arc ax = 2 × 42° = 84°

∠acb is outside the circle and is

∠acb = (arcab - arcax ), hence

∠acb = 0.5 (100 - 84) = 0.5 × 16° = 8°

x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

step-by-step explanation:

last month maria hiked the 5-mile mountain trail a number of times and she hiked the 10-mile canal trail several times. let x represent the number of times she hiked the 5-mile trail, and let y represent the number of times she hiked the 10-mile trail. if she hiked a total of 90 miles, which equation can be used to find the number of times maria hiked each trail? x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x