B. 15 because
-18+x=-3
X= -3 + 18
X = 15
Answer:
Step-by-step explanation:
<u>The slope-intercept form:</u>
- y = mx + b, where m- slope, b- y-intercept
<u>Use point (5, -3) and m = -4/5:</u>
- -3 = -4/5*5 + b
- -3 = -4 + b
- b = -3 + 4
- b = 1
<u>The line is:</u>
Answer: 3.76 meters
Step-by-step explanation:
To solve this problem we first call x = number of action figures, y = number of dolles. A system of two equations with two unknowns must be made to describe the problem. The system is the following:
(x + 1) + y = 13
1/2 * x = y.
Then solving the system we have that x = 8 and y = 4.
Since we know that the number of action figures is twice as many dolls plus one, then x = 8 + 1 = 9.
Thus,
dollos = 4
action figures = 9
Answer:
Step-by-step explanation:
x^2 + 3x - 9 =0
By comparing with the equation ax^2+bx+c = 0,
we get,
a = 1, b=3, c = -9
we know the formula for x is,
x = (-b±√(b^2 - 4ac))/2a
x = (-3±√45)/2
x = (-3±3√5)/2
x = (-3+3√5)/2, (-3-3√5)/2
