jenni8664
23.07.2021 •
Mathematics
Cho hình chóp S.ABCD, có đáy là hình vuông cạnh a, mặt bên (SAB) là tam giác đều, SC = a√2 . Gọi H, K lần lượt là trung điểm của AB, AD
a. Chứng minh rằng SH vuôn góc với mặt đáy
b. Chứng minh rằng AC vuông góc với SK và CK vuông góc với SD.
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Ответ:
y = 4x + 5
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c
Given
16x - 4y = - 20 ( subtract 16x from both sides )
- 4y = - 16x - 20 ( divide terms by - 4 )
y = 4x + 5 ← in slope- intercept form