Answer:
5
Step-by-step explanation:
We have an equation and are asked to find the input of x when y = 7.
The output = y = 7
The input = x
7 = 2x - 3
2x - 3 = 7
We need to find a number that multiplied by 2 which then is subtracted by 3 equals 7. We can use the backwards method to solve our answer.
2x - 3 = 7
7 + 3 = 2x
10 = 2x
Solve for x by dividing 2 from both sides :
x = 5.
Therefore, you would need an input of 5 to get 7 as the output.
Proof :
2(5) - 3 = 7
10 - 3 = 7
Answer:
The algebraic equation describing the above
X+y= x-30
Step-by-step explanation:
The initial temperature of the environment= x degrees
Temperature of the front= y degrees
the environment dropped 30 degrees, means loosed 30 degrees.
The final temperature f the environment= x-30
The algebraic equation describing the above
X+y= x-30
Answer:
C
Step-by-step explanation:
= - 3 × - 3 × - 3 × - 3 ← evaluate in pairs
= 9 × 9
= 81 → C
Answer:
x = 60°
Step-by-step explanation:
The measure of x is one- half the difference of the measures of the intercepted arcs.
The minor arc = 120°, hence
The major arc = 360° - 120° - 240°, so
x = 0.5(240 - 120) = 0.5 × 120° = 60°
