You have line XYZ, and XY + YZ = 57.
YZ = 28.
Therefore, XY + 28 = 57.
XY = 29.
Line JK, pls mark brainliest!!
Answer:
4/32 = x/40
160 = 32x
x = 5
Step-by-step explanation:
create a ratio, cross multiply, solve
C -2 because of the thanos
Answer:
a) Between 74 and 90
b) 81.86% of the scores are between 78 and 90
Step-by-step explanation:
a) According to the Empirical Rule, in a normal distribution, 95% of the data are within 2 standard deviations of the mean. Therefore, the range that 95% of the scores fall in is between 82-4(2)=74 and 82+4(2)=90.
b) The percent of scores that are between 78 and 90 is: normalcdf(lower,upper,μ,σ) = normalcdf(78,90,82,4) = 0.8185946784 ≈ 0.8186, or about 81.86% of the scores.