Answer:
Solve by substitution
[y=5/2x-4]
[y= -x+3]
Substitute y = -x +3
[-x+3=5/2x-4]
Isolate x for -x+3=5/2x-4: x=2
For y = -x+3
Substitute x = 2
y= -2+3
Simplify
y=1
The solutions to the system of equations are:
y=1 x=2
The diameter of a circle is 10 cm. Find its area in terms of π.
2 answers:
Answer:
A = 25
or A = 78.54
Step-by-step explanation:
The diameter of a circle is just the radius two times, in this case, the diameter is 10. This means that the radius would be 5. Therefore we can use 5 as our r variable in the formula for area (A=),
A = , simplify
:
A = 25
From here you can leave the asnwer in its excat form, 25, or you can simplify it by multiply 25 times pi to get 78.54 (rounded to the hundreths place).
You might be interested in
Answer:
slope is undefined
Step-by-step explanation:
Calculate the slope m using the slope formula
m =
with (x₁, y₁ ) = (- 2, 9 ) and (x₂, y₂ ) = (- 2, - 5 )
m = =
=
Since division by zero is undefined then the slope is undefined