I almost cry please help. Q:Two signs are on a street. One blinks every 10 s and the other every 6 s. How many times per minute do they blink together? (The answer is twice and why please show how you find out the answer is twice)

Step-by-step explanation:

if one blinks every 10 seconds it means that it blinks 6 times in one minute

60/10=6

the other one blinks every 6 seconds

60/6=10 blinks ten times

first one blinks:     10,20,30,40,50,60

second one blinks:6,12,18,24,30,36,42,48,54,60

is like finding GCM

common number are 30 and 60

hence- twice

77

step-by-step explanation:

c. y = 1/4 x + 5

step-by-step explanation:

first, put the equation of the line on the graph into slope-intercept form

(y = mx + b):   y = -4x + 8

second, a perpendicular line has to have "an opposite/reciprocal slope" to the original slope. so, find the "m" value in your original equation (it's -4, right? )

original slope: m = -4   perpendicular slope: change the sign to its opposite and find the reciprocal ("flip" the number)

new slope is now positive (b/c the original slope was negative 4), and it's 1/4 (not the original slope of 4 or 4/1)