Both are correct they just chose a different variable to solve for first. they will both get correct answers if they do the rest correctly.
You can use the app photo math to get the answer it’s free, hope this helps!
Answer : every point on a line satisfies the related linear equation.A point that is on both lines (the intersection point) satisfies both equations.
Answer:
Step-by-step explanation:
- Simplify
- Find the additive inverse of
by using its property - <em>"Sum of a number & its additive inverse is always zero". </em>Assume that 'x' is an additive inverse of .
- Simplify
- Now, find the product of
& 
Answer:
Step-by-step explanation:
We can solve this question using proportion
Perimeter of the square/Time is takes to unlock
We are told in the question that:
The cellphone unlocks when the perimeter reaches 32 centimeters, taking a total of 2.5 seconds.
Hence, the perimeter of the square after 1.5 seconds is:.x = unknown
32/2.5 = x/1.5
Cross Multiply
2.5x = 32 × 1.5
x = 32 × 1.5/2.5
x = 19.2 centimeters
