carsyn2016
07.11.2020 •
Mathematics
What is the value of x in the figure?
A. 10
B. 6
C. 15
D. 12
Solved
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Ответ:
Step-by-step explanation:
You need to set up a proportion.
(21 - 15) / 21 = 4/(x + 4)
6 / 21 = 4/(x + 4)
2/7 = 4/(x + 4)
2(x + 4) = 7*4
2x + 8 = 28
2x + 8-8= 28 - 8
2x = 20
x = 20/2
x = 10
Ответ:
I think it is 83.2.
If not 112, it is 130.
Step-by-step explanation:
104 × 0.8 = 83.2
104 ÷ 0.8 = 130.
If both answers are wrong, I will give you your points back.
Hope this helped you!!
If you need/want anymore help, let me know!
Have a nice day!
:)