Answer:
justin = 135 & greg = 150
Step-by-step explanation:
equations:
(justin is 15lbs under greg) j-15=g
(find gregs full weight by doubling bc the problem gave you half) 75*2=150
(plug in gregs wieght to find justins weight) j-15=150 -> j=135
Answer:
1) 2
2) 3
3) y = 2x + 3
Step-by-step explanation:
I'll be expecting that brainliest :)
It is given that the bottle temperature begins at the freezer temperature of –16° C. Thus, the initial temperature is –16° C.
Now, sitting on the kitchen counter, the bottle temperature will go up a steady 9.6° C every hour. We need to know how many hours will it take to reach 20° C.
Let us assume that it will take "
" hours to reach the required temperature. Then the equation that will guide this system will be a linear one as shown below:
![-16+9.6x=20](https://tex.z-dn.net/?f=%20-16%2B9.6x%3D20%20)
Adding 16 to both sides we get:
![9.6x=20+16=36](https://tex.z-dn.net/?f=%209.6x%3D20%2B16%3D36%20)
Dividing both sides by 9.6 we get:
hours
Thus it will take 3.75 hours (or 3 hours 45 minutes) for the bottle of maple syrup to reach a temperature of
celsius.
Answer:
1.) up
2.) (-2,-5)
3.) x = -2
4.) (-2,-5)
5.) y = -5
6.) -∞ < x < ∞
7.) -5 < y < ∞
8.) (0,0)
9.) (0,0) and (-4,0)
10.) two solutions
Step-by-step explanation:
1.) because the parabola opens upward and the vertex is down
2.) the lowest point of the parabola is (-2,-5)
3.) If a line was drawn through the point x = -2, the two halves of the parabola would look symmetrical ( the same on both sides).
4.) The minimum point on the graph is ( -2,-5), because that is the lowest point on this upward parabola, and we can not determine the maximum.
5.) The minimum value of y is y = -5, because that is the lowest value of y on this graph, and we can not determine the maximum.
6.) Because the arms of the parabola continue traveling through negative infinity and positive infinity on the x-axis, the domain is -∞ < x < ∞.
7.) The arms of the parabola go from y = -5 to infinity, so the range of the parabola is -5 < y < ∞.
8.) The parabola first crosses the y-axis at the point (0,0)
9.) The parabola first crosses the x-axis at the points (0,0) and (-4,0)
10,) The solution to the parabola is the variable x. The solutions (x intercepts) of the parabola are x = 0 and x = -4.
Does this help you?