Okay. It would be written like this: n/7 - 2 = 10. Add 2 to both sides and then you get n/7 = 12. Multiply by 7 to isolate the “n”. Then, you should get n = 84. Plug it in. 84/7 is 12. 12- 2 = 10. There. n = 84.
Answer:
the answer would be c
Step-by-step explanation:
the answer is 1 3/4
Answer:
22m
Step-by-step explanation:
Let height of flagpole=h
AB==17 m
(1 degree= 60 minute)
We have to find the approximate height of the flagpole.
In triangle CDA,
In triangle CDB,
Substitute the value
Substitute the value
Hence, the height of the flagpole=22 m
Answer:
Refer below for detailed explanation.
Step-by-step explanation:
1. ax^2+bx+c=0.
Quadratic formula:
2. x = -b+-sqrt(b^2-4ac)/2a. .
Now two equations to find the factored form through these formulas above.
Through this identifying a,b and c.
ax^2+bx+c=0.
x^2+4x-21=0
Here a=1, b=4, and c= -21
Now applying in the quadratic formula.
x=-4+-sqrt(4^2-4(1)(-21))/2(1)
Now solve it and it becomes
x=3 or x= -7.
Another example :
x^2+3x-4=0
Here a=1, b=3 and c=-4.
X=-3+-sqrt(3^2-4(1)(-4))/2(1)
Now solve it and
x= -4 and x=1