skullglitches

05.01.2021 • 

Mathematics

D Zb
1. Use the diagram to answer the following questions.
a) How many points appear in the figure?
b) How many lines appear in the figure
c) How many planos appear in the figure?
d) Name a line containing point V.
e) Name the intersection of lines a and b.
) Give another name for line b.
g) Name three non-collinear points.
h) Give another name for plane D.
2. Use the diagram to answer the following questions.
a) How many points appear in the figure?
b) How many lines appear in the figure?
c) How many planes appear in the figure?
d) Name three collinear points.
e) Name four non-coplanar points.
f) Give another name for line e.
g) Name the intersection of PQ and MO.
h) Name the intersection of plane K and line c.
1) Give another name for plane L. I
1) Give another name for PQ.
K
T
P
S
e
M
N/
U
R
с

Ответ:

brashley

30.05.2021

Mathematics

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The percentage decrease in TV price after five years is 6.89

Step-by-step explanation:

Given as :

The cost of TV five years ago = $ 2400

The present cost of TV = $ 1680

Let The decrease percentage in five years = x

So, The cost of TV after T year = Present cost ×  

Or, $ 1680 = $ 2400 ×  

Or, 0.7 =    

Or,   = 1 -

Or, 0.9311 = 1 -

Or,  = 1 - 0.9311

∴,  = 0.0689

I.e x = 0.0689 × 100 = 6.89

Hence The percentage decrease in TV price after five years is 6.89 Answer

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