Answer: The missing value, y = 24
Step-by-step explanation:
The triangles are similar, so the sides are proportional.
The length of side BD is 10. The segment AD is also 10. Add them to get the length of side AB.
DE is 12
12:10 = y:20 . 20/10 = 2 2×12 = 24
Answer:-7^2(negitive seven to the second power)
Step-by-step explanation:
Answer:
532
Step-by-step explanation:
The score that represents the top 20% = A score = 80%
Z score for 80% percentile = 0.842
We solve using the z score formula
z = (x-μ)/σ, where
x is the raw score = ??
μ is the population mean = 490
and σ is the population standard deviation = 50
Hence:
0.842 = x - 490/50
Cross Multiply
0.842 × 50 = x - 490
x = 0.842 × 50 + 490
x = 42.1 + 490
x = 532.1
Approximately = 532
Therefore, the test score = 532
Step-by-step explanation:
the fireplace would have 24 bricks on the 10th row
