Answer:
Option B is correct - this experiment has one factor (shampoo type), blocked by gender and whether the hair is dyed.
Step-by-step explanation:
The researcher desires to compare the effect of a new type of shampoo, he also has the opinion that men and women may react to the shampoo differently.
Furthermore, he believes that the shampoo will react differently to the hair that is dyed.
Therefore, this experiment has one factor(shampoo-type), blocked by gender and whether the hair is dyed.
Hence, option B is the correct option.
Answer:
r ≈ 7.18%
Step-by-step explanation:
a = p(1 + r)^n
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a = 10000 * 2 = 20000
p = 10000
n = 2035 - 2025 = 10
Plug in the knowns
20000 = 10000(1 + r)^(10)
Divide both sides by 10000
2 = (1 + r)^(10)
Take the log of both sides
log2 = 10 * log(1 + r)
Divide bot sides by 10
(log2)/10 = log(1 + r)
use calculator
0.030102999566398 = log(1 + r)
antilog both sides
10^0.030102999566398 = 1 + r
1.0717734625 = 1 + r
Subtract 1 from both sides
0.0717734625 = r
r ≈ 7.18%
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Alternate method
2 = (1 + r)^(10)
Take 10th root of both sides
1.0717734625 = 1 + r
Subtract 1 from both sides
0.0717734625 = r
r = 7.18%
36 6th grade
24 7th grade
30 8th grade
Ratio of 7th graders : 8 graders = 24 : 30 . Divide through by 6
= 4 : 5
Answer:
x=0.325 (my brain) or x=24 (photomath)
Step-by-step explanation:
3x-6+ X-10=10x+8-7x
Combine like terms (3x+X)
4x-6+10=3x+8
Combine more like terms (-6+10)
4x+4=3x+8
Subract 4 from both sides
4x=3x+4
Divide 3 form both sides
1.3x=4
Divide 1.3 from 4
x=0.325