The percentage value of the decimals are 475%, 99% and 1040% respectively.
Data;
<h3>Conversion of Decimals to Percentage</h3>
a) 4.75
To convert a decimal value to percentage, all we simply need to do is multiply that number by 100.

b) 0.99
To convert this decimal value to percentage, we just need to multiply this number by 100.

c) 10.4
To convert this decimal value to percentage, we just need to multiply this number by 100.

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x=0 or x=4
just factorize basically
cancels the x’s so it’d be 3x-12=0 and from that x=4
Alright.
For 7, you'll want to put congruent sides equal to each other, assuming they are parallelograms. So, you'll get the two equations:
3x+2=23
2y-7=9
Solve using GEMDAS/PEMDAS, and you'll get these answers.
3x+2=23
3x=21
x=7
2y-7=9
2y=2
y=1
For 8, you'll want to do the exact same thing, formatting the numbers to equal each other. You'll get these two equations:
3y+5=14
2x-5=17
Solving them would make:
3y+5=14
3y=9
y=3
2x-5=17
2x=22
x=11
For 9, you have to remember that the angle opposite of one angle in a defined parallelogram are congruent. Thus:
130=2h
5k=50
solve them and you get
h=65
k=10
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Hope that helped. Good luck.