Answer:
a=9 b=18
Step by-step explanation:
First we will find b.
Because there is no 18 in this set and it's an even set of numbers, this would mean that 18 is not present in the set.
The only way for 18 to the be the mean is for b to equal 19. When calculating the average of 17 and 19 your average, or mean, is 18.
a has to be a number ranging from 7-12.
Through trial and error, it can be found that the missing value of a is 9.
Hope this helps!
-MoCKEry
Answer:
x^2 +23x +49
Step-by-step explanation:
Find the area of the large rectangle
(x+10) * (2x+5)
FOIL
2x^2 +5x+20x+50 = 2x^2 +25x +50
Find the area of the unshaded square
(x+1) (x+1)
FOIL
x^2 +x+x+1 = x^2 +2x+1
To find the area of the shaded region
Take the area of the large rectangle and subtract the area of the square
2x^2 +25x +50 - (x^2 +2x+1)
Distribute the minus sign
2x^2 +25x +50 - x^2 -2x-1
Combine like terms
x^2 +23x +49
Multiplication is the answer I believe
so you would multiply 3 by the sum of 24 and 9...
3(24+9)=3(33)=99
Answer:I'm pretty sure it's A
Step-by-step explanation:
