Answer:
Percentage increases and decreases, are found by setting the problem up proportionally.
You are trying to find what percentage of 17.37 is 8.30 first.
so What %/100 = 8.30/17.37
Now define a variable:
Let x = What%
x/100 = 8.30/17.37
17.37x = 830
x = 830/17.37
x ≈ 47.78
8.30 is approximately 47.78% of 17.37, so the percentage decrease is 100% - 47.78% = 52.22%
The percentage decrease is approximately 52.22%
Answer:
42
Step-by-step explanation:
Answer:
number of scores between 490 and 610 is = 0.68 x 300 = 204
Step-by-step explanation:
The concept of Probability distribution is applied as it relates to the Z-scores.
Z = X - Mean /Standard deviation
The detailed steps and appropriate substitution is as shown in the attached file.
Answer:
Length = 13
Width = 7
Step-by-step explanation:
Given:
length = 2(width) - 1
Area of a Rectangle = lω = 91 cm²
Calculation:
Area of a Rectangle = lω = 91 cm²
(2ω-1)ω = 91
= 2ω²- ω - 91 = 0
=(2ω+13)(ω-7)=0
ω = -6.5 ω=7
length = 2(width) - 1
l=2(7) - 1
l = 13
Answer:
y= 3x - 5
y= x + 3
Step-by-step explanation:
i hope this is right
