Answer:
x = 8/11
Step-by-step explanation:
5x - 4 = -6x + 4
Collect like terms
5x + 6x = 4 + 4
11x = 8
x = 8/11
Answer:
It will take 8 minutes for the temperature to reach 76°
Step-by-step explanation:
The expression for the total temperature in degrees at time t can be written as;
T=I+EM
where;
T=total temperature
I=initial temperature
E=temperature increase per minute
M=number of minutes
This can also be written as;
total temperature=initial temperature+temperature increase per minute×number of minutes
In our case;
T=76°
I=40°
E=4.5°
M=m
replacing;
76=40+(4.5×m)
4.5 m=76-40=36
(4.5 m)/4.5=36/4.5
m=8
It will take 8 minutes for the temperature to reach 76°
Answer:
Step-by-step explanation:
<u>Given:</u>
<u>Solve for </u><u> in the 1st equation:</u>
<u>Substitute the value of </u><u> into the 2nd equation and solve for </u><u>:</u>
<u>Substitute the value of </u><u> into the 3rd equation and solve for </u><u>:</u>
<u>Plug </u><u> into the solved expression for </u><u> and evaluate to solve for </u><u>:</u>
<u>Plug </u><u> into the solved expression for </u><u> and evaluate to solve for </u><u>:</u>
Therefore: