Adrian are 3 ani, iar tatăl lui are 34 de ani. Peste câți ani Adrian va fi de două ori mai tânăr decât tatăl său?
1 answer:
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Answer:
A) Maia had 1920 beads more.
B) Maia had 2544 beads at first.
Step-by-step analysis:
Let x denote the beads with Jenny and y for Maia.
The information provided states that Maia possesses 2064 beads more than Jenny, which can be represented mathematically as:
Additionally, after Maia made a necklace with 144 beads, she had five times more beads than Jenny.
This can also be formulated as an equation:
A) Since Maia had 2064 beads more than Jenny before using 144 beads, we calculate her final bead count by subtracting 144 from 2064.
Thus, Maia is left with 1920 beads more than Jenny.
B) To solve this system of linear equations, we will utilize the substitution method.
By inserting equation (1) into equation (2), we arrive at:
Now, let's divide our equation by 4.
Now, we'll substitute x=480 into equation (1) to isolate y.
Conclusively, Maia initially had 2544 beads.
Answer:
The correct answer is;
A. 0.17
Step-by-step explanation:
Here are the provided details;
The average time taken for a cashier to handle an order, μ = 276 seconds
The deviation from the average, σ = 38 seconds
The z-score for an order processing time of x = 240 seconds can be calculated as follows;
Thus;
The resulting probability
P(z = -0.9474) = 0.17361
Hence, the estimated proportion of orders processed in under 240 seconds is roughly 0.17361 or 0.17 when rounded to two decimal places.