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.
Use photomath it’s faster and you get correct Answers!<3 have a good dayy
What is the square root of 999,999,999,999,999,999,999,999,999,999,999
zheka24 [161]
Answer:
3.1622777e+16
Step-by-step explanation:
Answer:
$104
Step-by-step explanation:
If the cost in the store is x we can write:
75%x = 78
0.75x = 78
x = 78 / 0.75 = 104
Answer:
y = -(x + 5)² + 4
Step-by-step explanation:
The roots are -3 and -7, so:
y = a (x + 3) (x + 7)
Distribute and complete the square:
y = a (x² + 10x + 21)
y = a (x² + 10x + 25 − 4)
y = a (x² + 10x + 25) − 4a
y = a (x + 5)² − 4a
The vertex is (-5, 4), so a = -1.
y = -(x + 5)² + 4
