rob is saving up to buy a new MP3 player for every $15 he earns babysitting he saves six dollars. on Saturday rob earned $75 bab
2 answers:
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Answer:
15
Step-by-step explanation:
Look at the attachment
Answer:
0.0143 = 1.43% probability that first 4 digits of the code are even numbers.
Step-by-step explanation:
Arrangements of n elements:
The number of possible arrangements of n elements is given by:
Probability:
A probability is the number of desired outcomes divided by the number of total outcomes.
In this question:
Desired outcomes:
First four digits are even(2, 4, 6 and 8 are even, so arrangements of 4 elements).
Last four digits are odd(1, 3, 5 and 7 are odd, so the last four elements are also arrangements of 4 elements). So
Total outcomes:
Arrangements of 8 digits. So
Probability:
0.0143 = 1.43% probability that first 4 digits of the code are even numbers.
Area of a circle = 
radius = 7.5
Using 3.14 for pi, the answer is 176.23
Using the pi symbol for pi, the answer is 176.71
radius = 7.5
Using 3.14 for pi, the answer is 176.23
Using the pi symbol for pi, the answer is 176.71