Area=(1/2)bh
given
b=10
h=9
aera=(1/2)9*10=45
3 triangles+base=
45*3+43.3=
135+43.3=
178.3 mm^2
Answer:
83
Step-by-step explanation:
f(x) = 7x - 1
Put x as 12.
f(12) = 7(12) - 1
f(12) = 84 - 1
f(12) = 83
Twice a number decreased by 11 is -23
Let the number be x
So we get the equation
2x -11 = -23
Add 11 to both sides
2x = -12
Divide both sides by 2
x = -6
So the number is -6
Negative 6
Answer:
to calculate his moles ......
Answer:

Step-by-step explanation:
To find the slope of the perpendicular line, we must first find the slope of the given line.
This can be done by rearranging the equation into the slope intercept form.
2x +3y= -3
3y= -2x -3
y= -⅔x -1
Thus, the slope of the given line is -⅔.
The slope of the perpendicular line is the negative reciprocal of the given line.
Slope of perpendicular line 
What is slope-intercept form?
- y= mx +c, where m is the slope and c is the y-intercept
- This can be achieved by making y the subject of formula
Negative reciprocal
- The reciprocal of m is

- The negative reciprocal of m is

Negative reciprocal of -⅔


