Let's check the answer
Start with equation (1). Plug in (x,y) = (-10,-1)
x + 5y = -15
-10 + 5y = -15 ... replace x with -10
-10 + 5(-1) = -15 ... replace y with -1
-10 - 5 = -15
-15 = -15 ... true equation
So we've confirmed one equation so far. Let's check the other equation
--------------------
Start with equation (2). Plug in (x,y) = (-10,-1)
y = (1/5)*x + 1
y = (1/5)*(-10) + 1 ... replace x with -10
-1 = (1/5)*(-10) + 1 ... replace y with -1
-1 = -2 + 1
-1 = -1
Since both equations are true when (x,y) = (-10,-1), this confirms the answer. Nice work on getting the correct answer.
Visually we can see the two lines crossing at (-10,-1). See the attached image. Note: 1/5 = 0.2 so the second equation can be written as y = 0.2x+1
Answer:
B = R/x -A
Step-by-step explanation:
Area of triangle= base*height/2
A=b*h/2
The percent error is 6.25%
Step-by-step explanation:
Percent error is given by:
Here,
Accepted value = 80.0°C
Experimental Value = 75.0°C
Putting the values in the formula
Hence,
The percent error is 6.25%
Keywords: Percentage, Error
Learn more about percent error at:
#LearnwithBrainly
Step-by-step explanation:
f
(
x
)
=
x
(
2
x
−
1
)
becomes:
f
(
3
)
=
3
(
(
2
×
3
)
−
1
)
f
(
3
)
=
3
(
6
−
1
)
f
(
3
)
=
3
×
5
f
(
3
)
=
15