ОГЭ 2015 Модуль "Реальная математика" задание 20

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2015.

2015. : 4 . 20. 020097 ( ) C=6000+4100n, n , . , 20 . .

:

C=6000+4100n, = 6000 +4100 20 =6000+82000 =88000 083CA5 , 2106. .1) 0,0022) 0,00023) 0,000024) 0,000002

:

2 10 =2 0,000001= 0,000002 6

0F2651 17,95 . ?1) 1,79510102) 1,7951083) 1,7951061,795107

:17,95 1000000 =17950000 = 1,795

16AD52 252,95 . , . 300000 /.

: S = Vt =300000/ 15170 =4553100000 =4553,1 252,9560 =15170: 4553,1 350AAC , , 36 2:7. ?

:2 +7 = 9 36 9 =4 2 = 2 4 =8 F701FF ( /c) a=2R, ( 1),R . , R( ), 10 1, 54 /c2.

: a= 2R = 10 2 54 =1080

DC8356 779000000 . ? 300000 /. .

: t =S V = 779 000 000 300 000 = 7790 3 2596,666 =2596,7 6, 1.

D7DB2F , ! ( ) C=150+11(t5), t , (t>5). , 15- . .

: C=150+11(t5) = 150 + 11 (15 -5) = 150 +1110 = 150 110 =260

BFFC97 ( ) , ( ). , ( ), 3 .

C8BF5C ( ) P=I2R, I ( ),R ( ). , R( ), 150 , 5 .

: P=I2R = 5 2 150 = 1500