Answer:
14 books
Step-by-step explanation:
Let b = number of books at the beginning
She sold 1/2 of the books
b - 1/2 b
This is how many she had left
Then she bought 7
b - 1/2 b + 7
this equals 14
b - 1/2 b + 7 = 14
Combine like terms
1/2 b + 7 = 14
Subtract 7 from each side
1/2 b = 14-7
1/2 b = 7
Multiply each side by 2
1/2 b * 2 = 7*2
b = 14
She started with 14 books
The answer should be -40 + 16i
3. g(x) = x^2 - 5x + 3
g(-3) = -3^2 - 5(-3) + 3
g(-3) = 9 + 15 + 3
g(-3) = 27 <==
4. 4(7b + 15f - 8f) =
4(7b + 7f) =
28b + 28f <===
5. C = 2.50r + 15
for 5 rolls...r = 5
C = 2.50(5) + 15
C = 12.50 + 15
C = 27.50...its A
Answer:
The answer to your question is the third choice.
Step-by-step explanation:
a) 6x - 5y = 8
12x - 10y = 16
We observe that these lines are the same so they have infinite solutions.
b)
7x + 2y = 6
14x + 4y = 16
These lines are parallel because they have the same slope, so they do not cross, there is no solution.
c)
8x - 3y = 10
16x - 6y = 22
These lines are parallel because they have the same slope, so they do not cross, there is no solution.
d)
9x + 6y = 14
18x + 12y = 26
These lines are parallel because they have the same slope, so they do not cross, they do not have an infinite number of solutions.
The probability is 9/16.
This is because in the simulation, 9 of the results had 2 or 3 girls, and there was a total of 16 choices.
