Answer:
x = 18
Step-by-step explanation:
Total interior angle of pentagon: 540 degrees
(3x + 23) + (9x - 6) + 95 + 90 + (7x - 4) = 540
19x + 23 - 6 + 95 + 90 - 4 = 540
19x + 17 + 95 + 90 - 4 = 540
19x + 13 + 185 = 540
19x + 198 = 540
19x = 342
x = 18
Y varies directly with x m eans
y=kx where k is constant
y=40
x=16
find k
40=k16
divide both sides by 16
5/2=k
y=5/2x
y=-5 find x
-5=5/2x
times 2/5 both sides to cancle fraciton (5/2 times 2/5=10/10=1)
-10/5=x
-2=x
x=-2
Answer: 8 is the coefficient of x .
Step-by-step explanation:
Since, a numerical or constant quantity placed before and multiplying the variable in an algebraic expression is called coefficient of that variable.
Here the given expression,
5x + 6 - 4y - 3 + 3x - 2
= 5x + 3x - 4y +6 - 2
= (5+3)x -4y + 4
= 8x - 4y + 4
Where 8 is the constant that placed before x that is 8 is the coefficient of x.
The answer is true.
5.4 divided by 0.6 = 9
12.6 divided by 1.4 = 9
Y=5+1.25x x=6 Meaning at 6 hours it would cost $12.50
