The following grouped frequency table shows information about students' marks in a test. The test was out of 30.
To pass the test a student needs to get over half of the marks.

Test scoreFrequency
0 - 54
6 - 106
11 - 156
16 - 206
21 - 256
26 - 302

What fraction of students passed the test?

c. prove the lengths are the same.

step-by-step explanation:

you need to prove the segments are congruent. congruent segments have the same length. find the lengths of the segments using the distance formula, and compare them.

answer: c. prove the lengths are the same.

answer

d. 10

explanation

the distance from point y to wx is the height of the triangle.

using pythagoras theorem,

group similar terms to get,

this implies that,

take positive square root of both sides to get,

this implies that,

x= cost per bracelet

number of bracelets * x + shipping charge = total cost

so

9x+9=72