Answer:
mean-8.167
median -8
there is no mode
Step-by-step explanation:
mean 2+5+7+9+11+15 = 49
49÷6=8.166666667
median its the middle number which is 7 and 9
7+9=16÷2 = 2
and the mode is the most frequently repeated number ....and non is repeated ..
Please show a picture of the expressions then I could help :)
Answer:
11
Step-by-step explanation:
Substitute 4 for x
2(4) +3
Answer:
x²+x-56
Step-by-step explanation:
If x=-8 and x=7 are the roots then x+8 and x-7 are the factors. Find the product of the factors to obtain the polynomial.
(x+8)(x-7)
x²-7x+8x-56
x²+x-56
Similarly,we could use Vieta's formula
x²-(sum of roots)x+(product of roots)
x²-(-8+7)x+(-8×7)
x²-(-1)x+(-56)
x²+x-56