Answer:
20
Step-by-step explanation:
any thing multiplied by a fraction gets divided so you need to reverse it and divide to get the answer
Answer:
The answer to your question is 75 cm
Step-by-step explanation:
Data
Student calculator Demonstration calculator
width = 15 mm width = 4.5 cm
height = 250 mm height = ?
Process
1.- Convert the width of the demonstration calculator to mm
10 mm ---------------- 1 cm
x ---------------- 4.5 cm
x = (4.5 x 10) / 1
x = 45 mm
2.- Use proportions to find the height of the demonstration calculator
250 / 15 = x / 45
- Solve for x
x = (250 x 45) / 15
-Simplification
x = 11250 / 15
-Result
x = 750 mm
3.- Conclusion
The height of the demonstration calculator is 750 mm or 75 cm
Given =
∠lkm = 7x - 5
∠nkm = 3x +9
find = value of∠ lkm.
To proof - let us assume that we takeapoint say n and draw a line nk.
nk is angle bisector it divided angle in two equal parts.
( as shown in the diagram given below)
thus we have
∠lkm = ∠lkn + ∠nkm
7x-5 = 3x+9 +3x +9
x = 23
thus the value of∠ lkm
∠lkm = 7x-5
(put the value of x)
thus
∠lkm = 7×23 - 5
∠lkm = 156°
