7.
2 answers:
Answer: The answer is (B) an enlargement with scale factor 2.
Step-by-step explanation: The quadrilateral K'L'M'N' is the dilation image of the quadrilateral KLMN. We are to select the correct description of the dilation from given four options.
We can record from the given graph that in quadrilateral KLMN, the length of one side is
KN = 1.5 units,
and in quadrilateral K'L'M'N', the length of the corresponding side is
K'N' = 3 units.
Therefore, the scale factor will be
So, there will be an enlargement with a scale factor 2.
Thus, (B) is the correct option.
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Answer:
Dinda received a 32% loss percentage.
Step-by-step explanation:
<u><em>The question in English is</em></u>
Dinda bought a phone for Rp.2,500,000.00. After 5 months, she sells it with
the price of Rp1,700,000.00. What percentage of losses did Dinda receive?
we know that
Rp.2,500,000.00 represent the 100%
so
Using a proportion
Find out what percentage represent the difference between the original value and the final value
therefore
Dinda received a 32% loss percentage.
Answer:
1)b
2)d)80/360×36π≈25.12cm²
4)d)32.5
5)c)135°
6)d)4π/3
Step-by-step explanation:
1) because as we know
Circle equation
=(x-a)²+(y-b)²=r²
=(x-5)²+(y+1)²=36 (given)
=(x-(+5))²+(y-(-1))²=6²
So
C(5,-1)and r=6
2)as we know area of sector
=Theta/360×πr²
=80/360×6²π
80/360×36×3.14
80/10×3.14
=25.12
4)to figure out 4 we have to separate the shape into 2 parts
First semi-circul
Second rectangle
So the parameter of the shape
=Circumference of semi-circul + the parameter of the rectangle
=[10π×½+2(10+3.4)]-10 (as the dashed line is not a part of parameter)
=[15.7+26.8]-10
=32.5
5)3π/4
3×180/4
540/4
135
6)240°
240°×π/180°
4π/3
