The mean is 35/5=7
v=((7-7)^2+(5-7)^2+(11-7)^2+(1-7)^2+(11-7)^2)/5
v=(0+4+16+36+16)/5
v=14.4
Round 198 to 200, then do a mental sum for 6x200 (1200) then subtract 6x2(12) which gives you your answer: 1188
<span>Let x=time required to mow the lawn if both work together
Then both work at the rate of 1/x lawn per min
fred works at the rate of 1/60 x
</span>Bullwinkle <span>at the rate of 1/90 x
</span>1/60 + <span>1/90 = 3/180 + 2/180 = 5/180 = 1/36
</span>
<span>rate of 1/x lawn per min so 1/36 =1/x
</span>
x= 36 min
fred mow <span>1/60 x = 1/60x36 =36/60= 9/15 of the lawn
</span><span>Bullwinkle mow 1/90 x 36 = 36/90 = 6/15 of the lawn </span>
Answer:
(-3, 2)
Step-by-step explanation:
T -5,3 is a transformation down 5 and right 3 so you would add/subtract it from (2, -1)
So you do 2 -5 = -3
And -1 +3 = 2
The correct answers are both 2/9 and 5/6 both of these repeat forever <span />