Jim and Abby each bought burgers and fries from the concession stand at the fair. Jim bought 3 burgers and 2 orders of fries for
2 answers:
Answer: Each burger costs $4 and each order of fries costs $2.5 .
Step-by-step explanation:
Let x be the cost of each burger and y be the cost of each orders of fries.
Given : Jim bought 3 burgers and 2 orders of fries for $17.
Abby bought 2 burgers and 4 orders of fries for $18.
Then, the system of linear equation will become :
Divide by 2 on each sides of equation (2), we get
Eliminate equation (3) from (1), we get
Divide by 2 on both sides , we get
x=4
Put value of x in (3), we get
Subtract 3 both sides, we gte
Divide by 2 both sides , we get
y=2.5
Hence, each burger costs $4 and each order of fries costs $2.5 .
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Answer:
0.3557 = 35.57% probability that one selected subcomponent is longer than 118 cm.
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.
Normally distributed with a mean of 116 cm and a standard deviation of 5.4 cm.
This means that
Find the probability that one selected subcomponent is longer than 118 cm.
This is 1 subtracted by the pvalue of Z when X = 118. So
has a pvalue of 0.6443
1 - 0.6443 = 0.3557
0.3557 = 35.57% probability that one selected subcomponent is longer than 118 cm.