47. Reason quantitatively. In the diagram shown, ZA and ZX are right angles.
y
-20
10.803,9)
A(3, 4)
C015, 4)
10
20
- 20
2C-16, -1)
Y-4-6)
- 10
-207
a. Are AA BC and AXYZ right triangles? Explain.
b. Use the Distance Formula to find BC and YZ.
c. Use the Distance Formula to find AB and XY.
d. Do you have enough information to prove that
AXYZ - AABC? Explain.

1. there are 25 students who started computer programming in elementary school and 25 students who started computer programming in middle school. the first group had a mean final project grade of 95% and the second group had a mean final project grade of 92%. the line plot shows the differences after 10 rerandomizations. determine whether the difference in the means of the two groups is significant based on the line plot. explain your answer.

Which equation represents the line that passes through the points and (4, 10) and (2, 7)? y = 3/2x - 11y = 3/2x +4y = - 3/2x + 19y = - 3/2x + 16

Solve this equation using substitution. {4x + y = −2} {4x + 6y = 44}