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brittanysanders
31.07.2019 •
Mathematics
You and a classmate have a bug collection for science class. you find 5 out of every 9 bugs in the collection. you find 4 more bugs than your classmate. how many bugs are in the collection? there are 5 bugs in the collection.
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Ответ:
Let 'b' represent the total amount of bugs. Write your equation:
5/9 • b = 4/9 • b + 4
5/9 • b = - 4/9 • b = 4
1/9 • b = 4
b = 36
There are 36 bugs in the collection!
Ответ:
2,500 different sets
Step-by-step explanation:
According to the scenario, calculation of the given data are as follows,
Let 4-digit PIN code be WXYZ
As first digit is a prime number
So, W = 1, 2, 3, 5, 7
n(W) = 5
X and Y are number from 0 - 9
So, n(X) = 10 & n(Y) = 10
Z makes the whole number divisible by 2.
So, Z must even number
So, Z = 0,2,4,6,8 or n(Z) = 5
We can calculate the number of different sets by using following formula,
n(W) × n(X) × n(Y) × n(Z)
By putting the value, we get
5 × 10 × 10 × 5 = 2,500