Answer: x<-10
Step-by-step explanation:
the < in the math equation means that the number to the right is greater than the number to the left. x can not be -10 it has to be lower (smaller).
N = d - 5
2n/(d + 16) = n/d - 1/3 n/d
2n/(d + 16) = 2/3 n/d Divide by 2n
1 / (d + 16) = 1/3 d
Here's the tricky part.
d + 16 = 3d the two denominators are equal. the numerators are both 1.
16 = 2d
d = 8
so the numerator is d - 5
n = 8 - 5
n = 3
Let's see if it checks out.
n = 3
d = 8
2*3 = 6
8 + 16 = 24
New fraction 6/24 = 1/4
(3/8 - 1/3 ) = 1/8
3/8 - 1/8 = 1/4 so it checks with the original conditions put on it.
Answer:
x^7y^-9
Step-by-step explanation:
Answer:
$(19x + 42n + 15)
Step-by-step explanation:
Devi bought 7 skirts at $x each, n skirts at $12 each, (2n + 1) skirts at $15 each and 4 skirts at $3x each. Find the total cost of the skirts she bought.
total cost of the skirt bought can be determined by adding the total costs of each shirt bought
7 skirts at $x each = $7x
n skirts at $12 each = $12n
(2n + 1) skirts at $15 = (2n + 1) x 15 = 30n + 15
4 skirts at $3x each = $12x
7x + 12n + 30n + 15 + 12x
combine like terms
19x + 42n + 15
