Answer:
7 minutes
Step-by-step explanation:
The scientist changes the temperature for the solution at a rate of -7°C per minute. We need to find out how long it'll take for the solution's temperature to change from 0°C to -49°C. So, we divide -7 by -49 to find out how long it will take:
-49 / -7 = 7
It will take 7 minutes for the temperature to reach -49°C.
Madison is in charge of buying the hamburger meat for her company's annual picnic. She needs to but enough meat to make 1,000 hamburgers. Each hamburger<span>will weigh 0.25 pound. How many pounds of hamburger meat should Madison buy?
250=answer</span>
Answer:
15
Step-by-step explanation:
Area of Trapezoid: ![A=\frac{b_{1}+b_{2} }{2} h](https://tex.z-dn.net/?f=A%3D%5Cfrac%7Bb_%7B1%7D%2Bb_%7B2%7D%20%7D%7B2%7D%20h)
Base 1 = 7
Base 2 = 3
Height = 3
Plugging into the formula, you get:
(7+3)/2 = 5
5(3) = 15
you keep the 2k
so 5(-45)5x is 5 * -45*5 = -1125
the answer is 2k+-1125x