After rounding off, Answer is 6.
Hope this helps. - M
Answer:
domain: {x | x is a real number}
range: {y l y> -8}
Step-by-step explanation:
f(x) = 4x² – 8 is a parabola, a U shape.
Since the stretch factor, 4, is positive, it opens up, there it will have a minimum value, the lowest point in the parabola.
y > -8 because the minimum is -8.
Parabolas do not have restricted "x" values. "4" does not restrict x because it is the stretch factor, which determines how wide the parabola is.
Quadratic standard form:
f(x) = ax² + bx + c
"a" represents how wide the graph is. If it's negative it opens down, if it's positive it opens up.
"b", if written, tells you it is not centred on the y-axis. It is not written, so the vertex is on the y-axis.
"c" is the y-intercept. In this case, since b = 0, it is also the minimum value.
Let shirts be x and ties be y
3x+5y=$60 Equation 1 (Equation 1 will be denoted by *)
2x+3y=$39 Equation 2 (Equation 2 will be denoted by !)
*x2 6x + 10y = $120
!x3 6x + 9y = $117
*-! y = 120-117 =3
Ties are $3 each
Substitute this value back into one of the original 2 equations:
3x+5y=$60
3x+(5x3) = 60
3x+15=60
3x=45
x=15
Shirts are $15
Answer:
n = -15/8
Step-by-step explanation:
You can transform this into an easier equation by performing cross-multiplication:
(ie. topleft times bottomright = bottomleft times topright)
so n = -30/16 = -15/8
Answer:
You can go on 7 rides.
Step-by-step explanation:
I subtracted $15 from $58 which left me with $43 to go on rides. So every time you would go on a ride you would have to take away six. So I just subtracted $6 until I got down to a very small number.
Ride number 1: 43 - 6 = 37
Ride number 2: 37 - 6 = 31
Ride number 3: 31 - 6 = 25
Ride number 4: 25 - 6 = 19
Ride number 5: 19 - 6 = 13
Ride number 6: 13 - 6 = 7
Ride number 7: 7 - 6 = 1