Answer:
r = -6, -1
Step-by-step explanation:
r^2 + 7r+6 =0
Factor
What 2 numbers multiply to 6 and add to 7
6*1 =6
6+1 =7
(r+6) (r+1) =0
Using the zero product property
r+6 =0 r+1 =0
r = -6 r=-1
10≤n<100
So the number of two digit numbers is 99-10+1=90
The only combinations that sum to 5 are 14, 23, 32, 41, 50 so
P(sum=5)=5/90
P(sum=5)=1/18
The third one is 510 not show in the pic here
Both measurements are correct if you're rounding the dogs height.
But the more precise measurement would be 11 1/4.
Mainly because its a smaller fraction so it has more meaning to it instead of just plain 11
It would get more precise as the fraction got larger
For example.
Not very precise
11, 11 1/2, 11 1/4,
Precise
11 1/8, 11 1/16
Hope this helps!
Brainliest is always appreciated if you feel its deserved!<span />
