1. which statement below is true for hyperbolic geometry?
answer: d
the sum of the measures of the angles in a triangle is always less than 180 degrees.
2. identify the statement that is true in spherical geometry.
answer: d
the sum of the measures of the angles of a triangle is greater than 180.
3. what can be said about the vertices of an equilateral triangle drawn in poincaré’s system?
answer: b
the vertices are equidistant from the center of the circle.
4. satellites sputnik, yeltsin, and plekov often temporarily line up in order in a great circle. the circumference of the earth is 24,900 miles, and the satellites orbit at about 150 miles above the surface. if, while in a great circle, sputnik is 9,000 miles from yeltsin, and yeltsin is 10,500 miles from plekov, how far apart are sputnik and plekov?
answer: b
6,342 miles
5. identify the statement that is true in spherical geometry.
answer: d
two distinct lines intersect in two points.
given the equation is 8+9z=-6, the first step would be to subtract the 8 from both sides:
8+9z-8=-6-8
since 8 minus 8 = 0, this would cancel out the 8. and since -6 minus 8 equals -14, the equation would look like this
9z = -14
hello,
b) 62.47% of the students are between 14 and 18 years old.
step-by-step explanation:
mean = 15 and standard deviation = 2
student between 14 to 18
formula used z-score
for age 14 , z score
using z-table , p(z> -0.5)=0.3085
for age 18 , z score
using z-table , p(z< 1.5)=0.9332
p(-0.5< z< 1.5)=0.9332-0.3085 = 0.6247
thus, 62.47% of the students are between 14 and 18 years old.
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step-by-step explanation: