Answer:
24 is C and 25 is B , ill try and do the other questions if u need me to explain 24 and 25 lmk!
Answer:
x = 28 (So it takes 28 hours for the temperature to reach 0°C.)
y = -70 (So the temperature when the experiment begins is −70°C.)
Step-by-step explanation:
To find the the x value, you remove the y value or replace it with 0.
0 = 5/2x - 70
Next you move the variable.
70 (2/5) = x (multiply 70 by 2 to get 140 and divide that by 5)
And now you simplify to get:
28
To find the y value, you remove the x value or replace it with 0.
y = 0 - 70
And now you simplify to get:
-70
x = 28
y = -70
Answer:
240
Step-by-step explanation:
1.) 60 times 2
There are 60 minutes in a hour and since there are 2 germs in the jar.
2.) 120 times 2
120 from the total, and 2 germs are made every minute, you multiply.
No it isn't. Using the substitution method, if we substitute x for 0, we get
y = 6(0)+7
y = 0+7
y = 7
y = 0+7
y = 7
Hence the solution is (0,7)
Answer:
a = 2
b = 5
Step-by-step explanation:
![{b}^{0} = 1 \\ a \times 1 = 2 \\ a = 2 \\ (2) \times {b}^{4} = 1250 \\ {b}^{4} = 625 \\ b = 5](https://tex.z-dn.net/?f=%20%7Bb%7D%5E%7B0%7D%20%20%3D%201%20%5C%5C%20a%20%5Ctimes%201%20%3D%202%20%5C%5C%20a%20%3D%202%20%5C%5C%20%282%29%20%5Ctimes%20%20%7Bb%7D%5E%7B4%7D%20%20%3D%201250%20%5C%5C%20%20%7Bb%7D%5E%7B4%7D%20%20%3D%20625%20%5C%5C%20b%20%3D%205)