Giải bài toán Cho tam giác ABC có góc  = 90 0 , đường cao AH. Gọi M, N là trung điểm của AB và AC. Chứng minh rằng MH vuông góc với NH.

1e+27

step-by-step explanation:

options a,b,c are the right answer.

step-by-step explanation:

a linear parent function is always represented as y = x

if we write this function in the form of y=mx+c

⇒

or  

now if we plot a graph we will find these characteristics:

1) y intercept of the graph is zero so its a straight line passing through origin.

2) as we can see in both the forms of function written, values of x and y may be either positive or negative for the positive slope means points on the graph are either in first quadrant or in third one.

3) it's slope is one.

answer

you start with $5 and save $10 a week until you have at least $45wer

step-by-step explanation: