Answer:
Initially, Anglea has $6*w in total.
Then she buys N books, at $17 each, then the total cost of the books is: N*$17
After that, she had left $w.
a) This means that:
$6*w - N*$17 = $w
Now we can isolate the variable N in one side of the equation:
N*$17 = $6*w - $w = $5*w
N = ($5/$17)*w
N = (5/17)*w
That is the equation that tells the number of books Angela bought in terms of w.
b) Now we just need to replace the w by 34 in the above equation:
N = (5/17)*34 = 10
If w = 34, Angela bought 10 books.
Answer:
It should be x=4
Let me know if i'm right and sorry if im wrong!^^
Answer: x^2 +6x-27
Step-by-step explanation:multiply x and x. Multiply 9 and -3. multiply x and 9, then multiply x and -3. Add 9x+-3x= 6x
x^2 +6x -27
5 sevens go into 37 withought going over
Answer:
Point estimate is 16 and Margin of error is 9
Step-by-step explanation:
The point estimate is given by the following formula:
Point estimate = (Lower Bound + Upper Bound) / 2
Replacing we have:
Point estimate = (7 + 25) / 2 = 32/2
Point estimate = 16
Now, the margin of error is given by the following equation:
Margin of error = (Upper Bound - Lower Bound) / 2
Margin of error = (25 -7) / 2 = 18/2
Margin of error = 9
