Answer:
n=18
Step-by-step explanation:
100=4(n+7)
100=4n+28
-28 -28
72=4n
n=18
In case this wasn't easy to understand, first you distribute the 4 to the n and 7, to get 28, after that the equation becomes 100=4n+28, then you subtract 28 from 100, and from itself to get the 4n by itself, you are left with 72=4n, after that you just divide 4n and 72 by 4 and get n=18
hope that helped :)
Answer:
220 degree
Step-by-step explanation:
Given the radius=18cm , pi=3.14.. , area=198π
Area of a sector =∅×π×r²/360
or,198π=Θ×π×r²/360
or,Θ=360×198π/πr²
∴Θ=220°
1.solve for d under 1 can't type that means it wants d1= so
A= 1/2 d1d2
Mult by 2/1 of each side you get
2A= 1/2times 2/1 d1d2
2A= d1d2
Divide by d2 on both sides the d2 cancel on the right
2A/d2= d1
d1= 2A/d2
2.V=LWH
Divide by LH
V/LH= LWH/LH. LH cancel
V/LH= W
Hope this helps You and mom
7. -4x+y=9
Bring the 4x to the right makes it positive
Y= 4x+9
9. -3y+18x=12
-3y= -18x+12
Divide by -3 all of it
Y= 6x-4
Answer:
To find the slope, you divide the difference of the y-coordinates of 2 points on a line by the difference of the x-coordinates of those same 2 points .
Step-by-step explanation:
Answer:
1.1726.
Step-by-step explanation:
Use the identity sec^2 O = 1 + tan^2 O
sec^2 O = 1 + 3/8 = 1.375
sec O = √(1.375)
= 1.1726.