Estimate 886+215 by first rounding each number to the nearest hundred.

1,100

886 rounded to the nearest hundred is 900

215 rounded to the nearest hundred is 200

900 + 200 = 1,100

$4

step-by-step explanation:

$30×5=$150

$150 minus $130=$20

$20÷5=$4.

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(sin 42)/31. = sinx)/37

sinx = 37 (sin42)/31

= 37× 0.66/31 = 0.787

x= 51.9

other angle opposite to y = 180-51.9-42

= 180- 93.9 =86.1

so

sin42)/31 = sin 86.1)/y

0.021 = 0.997 /y

y= 0.997/0.021 =47.47