Ok so the numbers are in a sequence of +3 so he would go 2,5,8,11,14. He could only have 5 groups of marbles because 2+5+8+11+14=40
Answer: 117cm^2
Step-by-step explanation:
Arectangle = L*W
= 54cm^2
Atrapezoid = 1/2 (a+b) (h)
= 1/2 (15+6) (6)
= 1/2 (21) (6)
= 1/2 (126)
= 63cm^2
Answer:Tn=29-2n
Step-by-step explanation:
Firstly u determine the differences between the terms and see if it's common. These case the common difference is -2 which means these is a linear pattern.
Now Tn=a+(n-1)d
Tn=27+(n-1)(-2)
Tn=27-2n+2
Tn=29-2n
Answer:
Part 1) 
Part 2) 
Step-by-step explanation:
Part 1) we know that
To put factor back into the square root, we have to put squared value
we have

Remember that

substitute in the expression above

Part 2) we have

Solve for x
That means----> Isolate the variable x
Multiply in cross

Apply distributive property

Group terms

Factor x left side

Divide by (2c-ab) both sides

Answer:
A.
Step-by-step explanation:
4 is greater than the exact value of -2 and 4 is greater than -2. The exact values of -2 are 2 and -2. 4 is greater than both 2 and -2. Thus, a is correct.