In order to solve a proportion you need to cross multiply, so you would do:
4x20 and 9xX and you would get...
9x=80
then divide by nine to get
x=8.8888888889
which is technically 8.9
SOLUTION
Write out the equation
To solve this system of equation, the aprropriate method will be substitution
Substitute the expression for y into the second equation for y, we have
Expand the paranthesis we have
Divide both sides by 4, we have
Since the value of x has been obtained, we substitute into the first equation
Therefore
x = -3, y= -4
Answer:
6⅔ minutes
Or, 6 minutes 40 seconds
Step-by-step explanation:
X/10 + X/20 = X/T
(2X+X)/20 = X/T
3X/20 = X/T
3/20 = 1/T
T = 20/3
T = 6⅔ mins
Answer:
the answer is 125
Step-by-step explanation:
Answer:
h≅ 8 yards
Step-by-step explanation:
Given data
Volume of cone= 301.44 cubic yards
Radius of cone= 6 yards
Required
The Height of the cone
The expression for the volume of a cone is given as
V= 1/3πr^2h
Substitute
301.44= 1/3* 3.142*6^2*h
301.44= 37.704*h
Divide both sides by 37.704
h= 301.44/37.704
h= 7.99
h≅ 8 yards
