Answer:
440
Step-by-step explanation:
You can write the problem statement in math terms as ...
88 = 0.20 × (what number)
To solve this, divide by the coefficient of the variable, 0.20.
88/0.20 = (what number)
440 = (what number)
The number you're looking for is 440.
_____
Of course you know that 20% = 20/100 = 0.20.
(% is a shorthand way to write /100.)
Answer:
A) yellow = 4.5
B) pink = 8
C) orange =9
Step-by-step explanation:
A) yellow = 12-2-1-4.5=4.5
B) pink = 7 whole plus 2 half equals 8
C) orange = 16-1-1.5-1.5-3=9
Answer:
713
Step-by-step explanation:
Multiply 1,450 by 4.5 to get about 6,500 ants. Multiply 159 x 4.5 to get about 713. Hope this helps! Can you pls mark brainliest!
Answer:
The upper 20% of the weighs are weights of at least X, which is
, in which
is the standard deviation of all weights and
is the mean.
Step-by-step explanation:
Normal Probability Distribution:
Problems of normal distributions can be solved using the z-score formula.
In a set with mean
and standard deviation
, the z-score of a measure X is given by:

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.
Upper 20% of weights:
The upper 20% of the weighs are weighs of at least X, which is found when Z has a p-value of 0.8. So X when Z = 0.84. Then



The upper 20% of the weighs are weights of at least X, which is
, in which
is the standard deviation of all weights and
is the mean.