Cho hình chóp SABCD có ABCD là hình bình hành. Gọi O là giao điểm của AC và BD. a) Xác định giao tuyến của hai mặt phẳng (SAD)và (SBC).
b) Gọi G là trọng tâm của tam giác SBC, điểm I thuộc BD sao cho BI= 1/3 BD.
CM rằng GI // (SAB).
c) Gọi M là trung điểm của SD. Tìm giao điểm L của SA với mặt phẳng (CMG). Chứng minh ba đường thẳng MN, CL, SO đồng quy tại điểm K. Tính KL/KC

54.864 meters

step-by-step explanation:

answer: 819.89 miles across america

step-by-step explanation:

hi there!

first we need to find out how much they are adding to each number to make the next number.

ex: 4 + 4 = 8, 8 + 8 = 16, and so on.

so continuing with 32,

32 + 32 = 64

64 + 64 = 128

128 + 128 = 256

256 + 256 = 512

4, 8, 16, 32, 64, 128, 256, 512

the 8th term of the sequence will be 512

hope this ! ~

0 and 5 minutes

step-by-step explanation:

given that one morning eight buses arrive late by the number of minutes given below:

0 8 2 6 9 2 0 7 8

write these in ascending order

0   0 2 6 7 8 8 9

in the afternoon two more buses arrive at the bus stop say by x and y minutes late.

total number of buses = 10

median = average of 4th and 5th after arranging in ascending order

since 4th entry is 6, the values of x and y should be below 6

also given 0 is the mode so either x or y or both should be 0 because then only 0 gets the maximum frequency and hence mode

thus we have

0 0 0 2 6 7 8 8 9 and another unknown entry which is below 6.

since median is 3.5, we have the unknown entry to be 5 only because then only median =( 2+5)/2

thus the after noon buses were late by 0 and 5 minutes.