Let x=distance of foot of ladder from the wall, then
x+2=height of top of ladder up the wall.
length of ladder = 16 feet.
Using Pythagoras theorem,
x^2+(x+2)^2=16^2, expand and simplify
2x^2+4x+4 = 256 again simplify
x^2+2x-126=0 [fail to factor]
apply quadratic equation:
x=(-2+/-sqrt(4+504))/2
=-1+/-sqrt(127)
x=-12.3 (rejected) or
x=10.27 feet from wall.
What are you referring n as
Answer:
y=x+5
Step-by-step explanation:
Lines are parallel if they have the same slope, the Y-intercept does not matter. Since these line passes through point (0,5) it's y-intercept has to be 5 and It's still parallel with line y=x-7.
Answer:
40 people who don't like any of the three drinks.
Step-by-step explanation:
It is given there are 340 people in total
Number of people like tea=150
Number of people like tea only =90
Number of people like coffee only =80
Number of people like milk only =70
Number of people like coffee and milk only = 0
We can draw Venn diagram which helps us to find the number of people who don't like any of these three drinks. I'll attach the file.
2x+7=3
move 7 to the other side
sign changes from +7 to -7
2x+7-7= 3-7
2x= 3-7
2x= -4
divide both sides by 2 to get x by itself
2x/2= -4/2
answer:
x= -2