If x and y satisfy both 9x+2y=8 and 7x+2y=4, then y=?
1 answer:
Answer:
The value of y is -5
Step-by-step explanation:
we have
------> equation A
------> equation B
we know that
If x and y satisfy both equations, then (x,y) is the solution of the system of equations
Using a graphing tool
Remember that
The solution of the systems of equations is the intersection point both graphs
The intersection point is (2,-5)
therefore
The solution of the system of equations is the point (2,-5)
The value of y is -5
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Answer:
see explanation
Step-by-step explanation:
Using the tangent and sine ratios in the right triangle EFG
tan60° = =
=
( multiply both sides by EG )
EG × tan60° = 28 ( divide both sides by tan60° )
EG = ≈ 16.2 in ( to the nearest tenth )
--------------------------------------------------------------
sin60° = =
=
( multiply both sides by EF )
EF × sin60° = 28 ( divide both sides by sin60° )
EF = ≈ 32.3 in ( to the nearest tenth )
Answer:
Volume of Burj Khalifa Prism = 4000
Volume of CN Tower Prism = 2671
Step-by-step explanation:
Given
Height of Burj Khalifa = 828 m
Height of CN Tower in Toronto = 553 m
Base of rectangular prism is a square with sides <em>10 cm </em><em> 10 cm</em>.
Height of Burj Khalifa prism = 40 cm
828 m is represented as 40 cm
is represented as
So, height of rectangular prism of CN Tower = 26.71 cm
Volume of a Prism is given by the Formula:
Base is a square, so Area of base =
Volume of Burj Khalifa Prism:
Volume of CN Tower Prism:
So, the answer is:
Volume of Burj Khalifa Prism = <em>4000</em>
Volume of CN Tower Prism = <em>2671 </em>