Everything has been explained in there
<em>Answer:</em>
<em>n = 450</em>
<em>Step-by-step explanation:</em>
<em>18%·n = 81</em>
<em>18·n/100 = 81</em>
<em>18n = 8100</em>
<em>n = 8100 : 18</em>
<em>n = 450</em>
Answer:
$4
Step-by-step explanation:
20÷5=4 ............................................
Answer:
173 cm
105 kg
Step-by-step explanation:
Given :
BSA= √wh /3600
where w = weight in kg and h = height in cm.
A.)
w = 75 kg ; BSA = 1.9 ; h =?
BSA= √wh /3600
1.9 = √75h /3600
Take the square of both sides
1.9² = 75h /3600
1.9² * 3600 = 75h
12996 = 75h
h = 12996 / 75
h = 173.28 cm
h = 173 cm
B.)
h = 166 ; BSA = 2.2
BSA= √wh /3600
2.2 = √w166 /3600
Take the square of both sides
2.2² = 166w /3600
2.2² * 3600 = 166w
17424 = 166w
w = 17424 / 166
w = 104.96 kg
w = 105 kg
You substitute the given value of y into the equation
8x+4(3x+8)=12
Solve the equation for x
x= -1
Substitute the given value of x into the equation y=3x+8
y=3x (-1)+8
Solve the equation for y
y=5
Answer: (x= -1) (y= 5)