What magic trick??
Are you gonna do a magic??
Sorry for a lot of questions.
Answer:
x=70
Step-by-step explanation:
it's 70 because 50 and 20 is proportional to x
The value of y when x= 2401 is -10
<h3>How to determine the value of x?</h3>
An inverse variation is represented as:

Where k is the proportionality constant
When y = -70, x = 49
So, we have:

Take the square root of 49

Multiply through by 7
k = -490
Substitute k = -490 in 

When x =2401, we have

Evaluate the square root

Divide
y = -10
Hence, the value of y when x= 2401 is -10
Read more about variation at:
brainly.com/question/14254277
#SPJ1
Answer:
2ab(a + 3b)
Step-by-step explanation:
2a²b + 6ab²
Factor out 2ab
2ab(a + 3b)
Answer:
the measure of <6 is 77 degrees
x + 13 = 90
x = 77
Step-by-step explanation: