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Mango (1) = 15 3 = 5

Banana (1) = (13-5) (3+3) = 1 papaya (half) = (8+4) 2=6

The final result: mango + banana (3) + papaya (half) = 5 + 3 + 6 = 14

Set the front sail y=kx+b

1) At this time, k is greater than 0 2a+4>0 a>-2

2) At this time, k is less than 0 a<-2 y-axis intercept b is less than 0-(3-b)<0 b<3

3) At this time, the y-axis intercept b is greater than 0 b>3

4) At this time, the y-axis of the bridge distance is exactly equal to 0, that is, b = 0 b = 3, if there is ** do not understand, please point out the old hail.

Replace the denominator with 36 and multiply the numerator by the same multiple.

Solution: Length = 11 meters = 1100 cm.

Length = 1100 cm 1 100

11 cm. Width = 3 m = 300 cm.

Width = 300 cm 1 100

3 cm.

者 + 個阝 is all, 讠 + 個武 = language.

1 m 100 cm, multiply the length and width by 1 100, and the result is 11 cm long and 3 cm wide

1.Draw the symmetry point C of point A on the Y axis, and the symmetry point D (on the X axis) of point B on the Y axis.

2.The height of the triangle OB along the edge ob intersects the x-axis at point e, so ae = 4 * sin60° = 4 * 1 2 = 2So ac= 2*2=4

3, the coordinates of point A are (2,4), the coordinates of point D are (-2,0), (4 - 0) (2+2) = 1, so k = 1

Let Xiaodong velocity x, Xiaoming velocity y, 10x=1350-10y(1).

90x=90y-1350(2) (because Xiaodong could not solve it if he didn't cross the intersection, so Xiaodong passed through the intersection).

2) (1) 9 = (90y-1350) (1350-10y) 90y-1350 = 9 (1350-10y).

90y-1350=12150-90y

90y+90y=12150+1350

180y=13500

y=7510x=1350-10y->x=135-y=135-75=40 (m) Xiaodong velocity.

40*(10+80)=3600 (meters).