Check all statements that are true, 1) In Euclidean geometry, the sum of the angle measures of a triangle is equal to 180°

2) In both Eudidean and spherical geometry, a triangle can have two right angles.

3) In both Euclidean and spherical geometry, through any point not on a given line there is a line
parallel to the given line.

4) In spherical geometry, some quadrilaterals are parallelograms.

5) In spherical geometry, any two given lines must intersect.

6) None of these are true.

4) In spherical geometry, some quadrilaterals are parallelograms.

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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:

answer: c.  

step-by-step explanation:

mixtures containing substances that get attracted to magnet can be separated using a magnet. we can separate iron from a mixture of sand and iron, as only iron attracts to the magnet.