This is a tricky question for me
Hello,
1) Finding the slope of the line passing throught the 2 points:
m=(-8-6)/(7-2)=-14/5.
A perpendicular line has a slope of -1/m=5/14
So the line searched has for equation:
y+1=(x-2)*5/14
or 10x-28y+73=0
Answer:
Well 40% of 120 is 48 so 48 students
Step-by-step explanation:
Answer:
since the room is rectangular and has 4 sides
2 sides have the same length
18*2= 36m
80*2=160m
then add the sums...
the answer is 196 meters
Step-by-step explanation:
B = boys g = girls
.................................
b + g = 195 b = 195 - g
<u>b</u> = <u>8</u>
g 7
Substitute b for 195 - g in the 2nd equation:
<u>b</u> = <u>8</u>
g 7
<u>195 - g</u> = <u>8</u>
g 7
Cross Multiply
8g = 7 . ( 195 - g )
8g = 1365 - 7g
8g + 7g = 1365
15g = 1365
g = <u>1365</u>
15
g = 91
Substitute g for 91 in one of the equations:
b + g = 195
b + 91 = 195
b = 195 - 91
b = 104
S = 104 boys.
